+ -WM<X> and -WP<x> command line parameters to specify the minimally required

    Mac OS X/iOS version for the compiler code
   o such a parameter is not passed, extract the information from the
     environment variables MACOSX_DEPLOYMENT_TARGET/IPHONEOS_DEPLOYMENT_TARGET,
     like gcc
   o if neither the parameter nor the environment variable is used, use preset
     default values
   o pass on this version setting on to the Darwin linker
   o use this setting to determine which version of the startup code (crt1.o
     etc) to use, if any (based on information gathered from the GCC sources)
   o define a symbol called MAC_OS_X_VERSION_MIN_REQUIRED/
     IPHONE_OS_VERSION_MIN_REQUIRED based on this parameter
   o for usage information, see
     http://wiki.freepascal.org/FPC_New_Features_Trunk#Support_for_specifying_and_querying_the_deployment_version

git-svn-id: trunk@20503 -

compiler/cutils.pas

@@ -98,6 +98,7 @@ interface
     function DePascalQuote(var s: ansistring): Boolean;
     function CompareStr(const S1, S2: string): Integer;
     function CompareText(S1, S2: string): integer;
+    function CompareVersionStrings(s1,s2: string): longint;
 
     { releases the string p and assignes nil to p }
     { if p=nil then freemem isn't called          }
@@ -1051,6 +1052,71 @@ implementation
       end;
 
 
+    function CompareVersionStrings(s1,s2: string): longint;
+      var
+        start1, start2,
+        i1, i2,
+        num1,num2,
+        res,
+        err        : longint;
+      begin
+        i1:=1;
+        i2:=1;
+        repeat
+          start1:=i1;
+          start2:=i2;
+          while (i1<=length(s1)) and
+                (s1[i1] in ['0'..'9']) do
+             inc(i1);
+          while (i2<=length(s2)) and
+                (s2[i2] in ['0'..'9']) do
+             inc(i2);
+          { one of the strings misses digits -> other is the largest version }
+          if i1=start1 then
+            if i2=start2 then
+              exit(0)
+            else
+              exit(-1)
+          else if i2=start2 then
+            exit(1);
+          { get version number part }
+          val(copy(s1,start1,i1-start1),num1,err);
+          val(copy(s2,start2,i2-start2),num2,err);
+          { different -> done }
+          res:=num1-num2;
+          if res<>0 then
+            exit(res);
+          { if one of the two is at the end while the other isn't, add a '.0' }
+          if (i1>length(s1)) and
+             (i2<=length(s1)) then
+            s1:=s1+'.0'
+          else if i2>length(s2) then
+            s2:=s2+'.0';
+          { compare non-numerical characters normally }
+          while (i1<=length(s1)) and
+                not(s1[i1] in ['0'..'9']) and
+                (i2<=length(s2)) and
+                not(s2[i2] in ['0'..'9']) do
+            begin
+              res:=ord(s1[i1])-ord(s2[i2]);
+              if res<>0 then
+                exit(res);
+              inc(i1);
+              inc(i2);
+            end;
+          { both should be digits again now, otherwise pick the one with the
+            digits as the largest (it more likely means that the input was
+            ill-formatted though) }
+          if (i1<=length(s1)) and
+             not(s1[i1] in ['0'..'9']) then
+            exit(-1);
+          if (i2<=length(s2)) and
+             not(s2[i2] in ['0'..'9']) then
+            exit(1);
+        until false;
+      end;
+
+
 {*****************************************************************************
                                Ansistring (PChar+Length)
 *****************************************************************************}

compiler/globals.pas

@@ -266,6 +266,8 @@ interface
        GenerateImportSection,
        GenerateImportSectionSetExplicitly,
        RelocSection : boolean;
+       MacOSXVersionMin,
+       iPhoneOSVersionMin: string[15];
        RelocSectionSetExplicitly : boolean;
        LinkTypeSetExplicitly : boolean;
 
@@ -1527,6 +1529,8 @@ implementation
         RelocSection:=false;
         RelocSectionSetExplicitly:=false;
         LinkTypeSetExplicitly:=false;
+        MacOSXVersionMin:='';
+        iPhoneOSVersionMin:='';
         { memory sizes, will be overridden by parameter or default for target
           in options or init_parser }
         stacksize:=0;

compiler/msg/errore.msg

@@ -19,6 +19,7 @@
 #   asmr_     assembler parsing
 #   asmw_     assembler writing/binary writers
 #   unit_     unit handling
+#   option_   command line parameter parsing
 #   scan_     scanner
 #   parser_   parser
 #   type_     type checking
@@ -2870,7 +2871,7 @@ unit_u_indirect_crc_changed=10062_U_Indirect interface (objects/classes) CRC cha
 #
 #  Options
 #
-# 11049 is the last used one
+# 11051 is the last used one
 #
 option_usage=11000_O_$1 [options] <inputfile> [options]
 # BeginOfTeX
@@ -2999,6 +3000,13 @@ option_debug_external_unsupported=11048_W_Disabling external debug information b
 option_dwarf_smartlink_creation=11049_N_DWARF debug information cannot be used with smart linking with external assembler, disabling static library creation.
 % Smart linking is currently incompatble with DWARF debug information on most
 % platforms, so smart linking is disabled in such cases.
+option_invalid_macosx_deployment_target=11050_E_Invalid value for MACOSX_DEPLOYMENT_TARGET environment variable: $1
+option_invalid_iphoneos_deployment_target=11051_E_Invalid value for IPHONEOS_DEPLOYMENT_TARGET environment variable: $1
+% On Mac OS X, the MACOSX_DEPLOYMENT_TARGET/IPHONEOS_DEPLOYMENT_TARGET environment variable can be
+% used to set the default target OS version. In case of Mac OS X, it has to be of the format
+% XY.Z or XY.Z.AB with X, Y,Z , A and B all digits from 0-9.
+% In case of iOS, it has to be X.Z.A, where X, Z and A can all be either 1 or 2
+% digits from 0-9.
 %\end{description}
 # EndOfTeX
 
@@ -3413,11 +3421,17 @@ p*2Wi_Use internal resources (Darwin)
 3*2WI_Turn on/off the usage of import sections (Windows)
 4*2WI_Turn on/off the usage of import sections (Windows)
 A*2WI_Turn on/off the usage of import sections (Windows)
+3*2WM<x>_Minimum Mac OS X deployment version: 10.4, 10.5.1, ... (Darwin)
+4*2WM<x>_Minimum Mac OS X deployment version: 10.4, 10.5.1, ... (Darwin)
+p*2WM<x>_Minimum Mac OS X deployment version: 10.4, 10.5.1, ... (Darwin)
+P*2WM<x>_Minimum Mac OS X deployment version: 10.4, 10.5.1, ... (Darwin)
 3*2WN_Do not generate relocation code, needed for debugging (Windows)
 4*2WN_Do not generate relocation code, needed for debugging (Windows)
 A*2WN_Do not generate relocation code, needed for debugging (Windows)
 A*2Wpxxxx_Specify the controller type, see fpc -i for possible values
 V*2Wpxxxx_Specify the controller type, see fpc -i for possible values
+3*2WP<x>_Minimum iOS deployment version: 3.0, 5.0.1, ... (iphonesim)
+A*2WP<x>_Minimum iOS deployment version: 3.0, 5.0.1, ... (Darwin)
 3*2WR_Generate relocation code (Windows)
 4*2WR_Generate relocation code (Windows)
 A*2WR_Generate relocation code (Windows)

compiler/msgidx.inc

@@ -895,6 +895,8 @@ const
   option_ignored_target=11047;
   option_debug_external_unsupported=11048;
   option_dwarf_smartlink_creation=11049;
+  option_invalid_macosx_deployment_target=11050;
+  option_invalid_iphoneos_deployment_target=11051;
   wpo_cant_find_file=12000;
   wpo_begin_processing=12001;
   wpo_end_processing=12002;
@@ -919,9 +921,9 @@ const
   option_info=11024;
   option_help_pages=11025;
 
-  MsgTxtSize = 62257;
+  MsgTxtSize = 62838;
 
   MsgIdxMax : array[1..20] of longint=(
     26,90,315,109,85,55,116,26,202,63,
-    50,20,1,1,1,1,1,1,1,1
+    52,20,1,1,1,1,1,1,1,1
   );

compiler/msgtxt.inc

@@ -1,7 +1,7 @@
 {$ifdef Delphi}
-const msgtxt : array[0..000259] of string[240]=(
+const msgtxt : array[0..000261] of string[240]=(
 {$else Delphi}
-const msgtxt : array[0..000259,1..240] of char=(
+const msgtxt : array[0..000261,1..240] of char=(
 {$endif Delphi}
   '01000_T_Compiler: $1'#000+
   '01001_D_Compiler OS: $1'#000+
@@ -1052,60 +1052,64 @@ const msgtxt : array[0..000259,1..240] of char=(
   ' for the selected target/debug format combination.'#000+
   '11049_N_DWARF debug information cannot be used with smart linking with'+
   ' external assembler, disabling static library ','creation.'#000+
+  '11050_E_Invalid value for MACOSX_DEPLOYMENT_TARGET environment variabl'+
+  'e: $1'#000+
+  '11051_E_Invalid value for IPHONEOS_DEPLOYMENT_TARGET environment varia'+
+  'ble: $1'#000+
   '12000_F_Cannot open whole program optimization feedback file "$1"'#000+
-  '12001_D_Processing whole program optimization information in wpo feedb'+
-  'ack file "$1"'#000+
+  '12001_D_Pr','ocessing whole program optimization information in wpo fee'+
+  'dback file "$1"'#000+
   '12002_D_Finished processing the whole program optimization information'+
-  ' in wpo fe','edback file "$1"'#000+
-  '12003_E_Expected section header, but got "$2" at line $1 of wpo feedba'+
-  'ck file'#000+
+  ' in wpo feedback file "$1"'#000+
+  '12003_E_Expected section header, but got "$2" at line $1 of wpo feedb',
+  'ack file'#000+
   '12004_W_No handler registered for whole program optimization section "'+
   '$2" at line $1 of wpo feedback file, ignoring'#000+
-  '12005_D_Found whole program o','ptimization section "$1" with informati'+
-  'on about "$2"'#000+
-  '12006_F_The selected whole program optimizations require a previously '+
-  'generated feedback file (use -Fw to specify)'#000+
+  '12005_D_Found whole program optimization section "$1" with information'+
+  ' about "$2"'#000+
+  '12006_F_The selected whole progra','m optimizations require a previousl'+
+  'y generated feedback file (use -Fw to specify)'#000+
   '12007_E_No collected information necessary to perform "$1" whole progr'+
-  'am',' optimization found'#000+
-  '12008_F_Specify a whole program optimization feedback file to store th'+
-  'e generated info in (using -FW)'#000+
+  'am optimization found'#000+
+  '12008_F_Specify a whole program optimization feedback file to stor','e '+
+  'the generated info in (using -FW)'#000+
   '12009_E_Not generating any whole program optimization information, yet'+
   ' a feedback file was specified (using -FW)'#000+
-  '12010','_E_Not performing any whole program optimizations, yet an input'+
-  ' feedback file was specified (using -Fw)'#000+
+  '12010_E_Not performing any whole program optimizations, yet an input f'+
+  'eedback file was spec','ified (using -Fw)'#000+
   '12011_D_Skipping whole program optimization section "$1", because not '+
   'needed by the requested optimizations'#000+
-  '12012_W_Overriding previousl','y read information for "$1" from feedbac'+
-  'k input file using information in section "$2"'#000+
+  '12012_W_Overriding previously read information for "$1" from feedback '+
+  'input file using information in section "$2"',#000+
   '12013_E_Cannot extract symbol liveness information from program when s'+
   'tripping symbols, use -Xs-'#000+
-  '12014_E_Cannot extract symbol liveness information from ','program when'+
-  ' when not linking'#000+
-  '12015_F_Cannot find "$1" or "$2" to extract symbol liveness informatio'+
-  'n from linked program'#000+
+  '12014_E_Cannot extract symbol liveness information from program when w'+
+  'hen not linking'#000+
+  '12015_F_Cannot find "$1" or "$2" to extract symbol liven','ess informat'+
+  'ion from linked program'#000+
   '12016_E_Error during reading symbol liveness information produced by "'+
   '$1"'#000+
-  '12017_F_Error executing "$1" (exitcode: $2) ','to extract symbol inform'+
-  'ation from linked program'#000+
-  '12018_E_Collection of symbol liveness information can only help when u'+
-  'sing smart linking, use -CX -XX'#000+
+  '12017_F_Error executing "$1" (exitcode: $2) to extract symbol informat'+
+  'ion from linked program'#000+
+  '12018_E_Collection of symbol livenes','s information can only help when'+
+  ' using smart linking, use -CX -XX'#000+
   '12019_E_Cannot create specified whole program optimisation feedback fi'+
   'le "$1"'#000+
-  '11023_Free',' Pascal Compiler version $FPCFULLVERSION [$FPCDATE] for $F'+
-  'PCCPU'#010+
-  'Copyright (c) 1993-2011 by Florian Klaempfl and others'#000+
+  '11023_Free Pascal Compiler version $FPCFULLVERSION [$FPCDATE] for $FPC'+
+  'CPU'#010+
+  'Copyright (c) 1993-201','1 by Florian Klaempfl and others'#000+
   '11024_Free Pascal Compiler version $FPCVERSION'#010+
   #010+
   'Compiler Date      : $FPCDATE'#010+
   'Compiler CPU Target: $FPCCPU'#010+
   #010+
-  'Supported tar','gets:'#010+
+  'Supported targets:'#010+
   '  $OSTARGETS'#010+
   #010+
   'Supported CPU instruction sets:'#010+
   '  $INSTRUCTIONSETS'#010+
   #010+
-  'Supported FPU instruction sets:'#010+
+  'Supported FPU ','instruction sets:'#010+
   '  $FPUINSTRUCTIONSETS'#010+
   #010+
   'Supported ABI targets:'#010+
@@ -1114,332 +1118,344 @@ const msgtxt : array[0..000259,1..240] of char=(
   'Supported Optimizations:'#010+
   '  $OPTIMIZATIONS'#010+
   #010+
-  'Supported Whole Program Optimiza','tions:'#010+
+  'Supported Whole Program Optimizations:'#010+
   '  All'#010+
   '  $WPOPTIMIZATIONS'#010+
   #010+
   'Supported Microcontroller types:'#010+
   '  $CONTROLLERTYPES'#010+
-  #010+
+  #010,
   'This program comes under the GNU General Public Licence'#010+
   'For more information read COPYING.FPC'#010+
   #010+
   'Report bugs, suggestions, etc. to:'#010+
-  '                 http://','bugs.freepascal.org'#010+
+  '                 http://bugs.freepascal.org'#010+
   'or'#010+
   '                 [email protected]'#000+
-  '11025_**0*_Put + after a boolean switch option to enable it, - to disa'+
-  'ble it'#010+
+  '11025_**0*_Put + after a b','oolean switch option to enable it, - to di'+
+  'sable it'#010+
   '**1a_The compiler doesn'#039't delete the generated assembler file'#010+
-  '**2al_List sourcecode lines in assembler ','file'#010+
+  '**2al_List sourcecode lines in assembler file'#010+
   '**2an_List node info in assembler file (-dEXTDEBUG compiler)'#010+
-  '*L2ap_Use pipes instead of creating temporary assembler files'#010+
+  '*L2ap_Use pipes inst','ead of creating temporary assembler files'#010+
   '**2ar_List register allocation/release info in assembler file'#010+
-  '**2at_List temp allocation/release info in assembl','er file'#010+
+  '**2at_List temp allocation/release info in assembler file'#010+
   '**1A<x>_Output format:'#010+
   '**2Adefault_Use default assembler'#010+
-  '3*2Aas_Assemble using GNU AS'#010+
+  '3*2Aas_Assemble using',' GNU AS'#010+
   '3*2Amacho_Mach-O (Darwin, Intel 32 bit) using internal writer'#010+
   '3*2Anasmcoff_COFF (Go32v2) file using Nasm'#010+
-  '3*2Anasmelf_ELF32 (Linux) file using Nasm',#010+
+  '3*2Anasmelf_ELF32 (Linux) file using Nasm'#010+
   '3*2Anasmwin32_Win32 object file using Nasm'#010+
-  '3*2Anasmwdosx_Win32/WDOSX object file using Nasm'#010+
+  '3*2Anasmwdosx_Win32/WDOSX object file usin','g Nasm'#010+
   '3*2Awasm_Obj file using Wasm (Watcom)'#010+
   '3*2Anasmobj_Obj file using Nasm'#010+
   '3*2Amasm_Obj file using Masm (Microsoft)'#010+
-  '3*2Atasm_Obj file using Tasm (Borlan','d)'#010+
+  '3*2Atasm_Obj file using Tasm (Borland)'#010+
   '3*2Aelf_ELF (Linux) using internal writer'#010+
-  '3*2Acoff_COFF (Go32v2) using internal writer'#010+
+  '3*2Acoff_COFF (Go32v2) using internal wri','ter'#010+
   '3*2Apecoff_PE-COFF (Win32) using internal writer'#010+
   '4*2Aas_Assemble using GNU AS'#010+
   '4*2Agas_Assemble using GNU GAS'#010+
-  '4*2Agas-darwin_Assemble darwin Mach-O64 u','sing GNU GAS'#010+
+  '4*2Agas-darwin_Assemble darwin Mach-O64 using GNU GAS'#010+
   '4*2Amasm_Win64 object file using ml64 (Microsoft)'#010+
-  '4*2Apecoff_PE-COFF (Win64) using internal writer'#010+
+  '4*2Apecoff_PE-COFF (Win','64) using internal writer'#010+
   '4*2Aelf_ELF (Linux-64bit) using internal writer'#010+
   '6*2Aas_Unix o-file using GNU AS'#010+
   '6*2Agas_GNU Motorola assembler'#010+
-  '6*2Amit_MIT Synta','x (old GAS)'#010+
+  '6*2Amit_MIT Syntax (old GAS)'#010+
   '6*2Amot_Standard Motorola assembler'#010+
   'A*2Aas_Assemble using GNU AS'#010+
-  'P*2Aas_Assemble using GNU AS'#010+
+  'P*2Aas_As','semble using GNU AS'#010+
   'S*2Aas_Assemble using GNU AS'#010+
   '**1b_Generate browser info'#010+
   '**2bl_Generate local symbol info'#010+
   '**1B_Build all modules'#010+
-  '**1C<x>_Code generatio','n options:'#010+
+  '**1C<x>_Code generation options:'#010+
   '**2C3<x>_Turn on ieee error checking for constants'#010+
-  '**2Ca<x>_Select ABI, see fpc -i for possible values'#010+
+  '**2Ca<x>_Select ABI, see',' fpc -i for possible values'#010+
   '**2Cb_Generate big-endian code'#010+
   '**2Cc<x>_Set default calling convention to <x>'#010+
-  '**2CD_Create also dynamic library (not supported',')'#010+
+  '**2CD_Create also dynamic library (not supported)'#010+
   '**2Ce_Compilation with emulated floating point opcodes'#010+
-  '**2Cf<x>_Select fpu instruction set to use, see fpc -i for possible va'+
-  'lues'#010+
+  '**2Cf<x>_Select fpu instructi','on set to use, see fpc -i for possible '+
+  'values'#010+
   '**2CF<x>_Minimal floating point constant precision (default, 32, 64)'#010+
   '**2Cg_Generate PIC code'#010+
-  '**2Ch<n>_<n> by','tes heap (between 1023 and 67107840)'#010+
+  '**2Ch<n>_<n> bytes heap (between 1023 and 67107840)'#010+
   '**2Ci_IO-checking'#010+
   '**2Cn_Omit linking stage'#010+
-  '**2Co_Check overflow of integer operations'#010+
+  '**2Co_','Check overflow of integer operations'#010+
   '**2CO_Check for possible overflow of integer operations'#010+
-  '**2Cp<x>_Select instruction set, see fpc -i for possible valu','es'#010+
+  '**2Cp<x>_Select instruction set, see fpc -i for possible values'#010+
   '**2CP<x>=<y>_ packing settings'#010+
-  '**3CPPACKSET=<y>_ <y> set allocation: 0, 1 or DEFAULT or NORMAL, 2, 4 '+
-  'and 8'#010+
+  '**3CPPACKSET=<y>_ <y> set allocation: 0, 1 or DEFAUL','T or NORMAL, 2, '+
+  '4 and 8'#010+
   '**2Cr_Range checking'#010+
   '**2CR_Verify object method call validity'#010+
   '**2Cs<n>_Set stack checking size to <n>'#010+
-  '**2Ct_Stack checking (for te','sting only, see manual)'#010+
+  '**2Ct_Stack checking (for testing only, see manual)'#010+
   '**2CX_Create also smartlinked library'#010+
-  '**1d<x>_Defines the symbol <x>'#010+
+  '**1d<x>_Defines the symb','ol <x>'#010+
   '**1D_Generate a DEF file'#010+
   '**2Dd<x>_Set description to <x>'#010+
   '**2Dv<x>_Set DLL version to <x>'#010+
   '*O2Dw_PM application'#010+
   '**1e<x>_Set path to executable'#010+
-  '**1E_S','ame as -Cn'#010+
+  '**1E_Same as -Cn'#010+
   '**1fPIC_Same as -Cg'#010+
   '**1F<x>_Set file names and paths:'#010+
-  '**2Fa<x>[,y]_(for a program) load units <x> and [y] before uses is par'+
-  'sed'#010+
+  '**2Fa<x>[,y]_(for a p','rogram) load units <x> and [y] before uses is p'+
+  'arsed'#010+
   '**2Fc<x>_Set input codepage to <x>'#010+
   '**2FC<x>_Set RC compiler binary name to <x>'#010+
-  '**2Fd_Disable the comp','iler'#039's internal directory cache'#010+
-  '**2FD<x>_Set the directory where to search for compiler utilities'#010+
+  '**2Fd_Disable the compiler'#039's internal directory cache'#010+
+  '**2FD<x>_Set the directory where to search for compile','r utilities'#010+
   '**2Fe<x>_Redirect error output to <x>'#010+
   '**2Ff<x>_Add <x> to framework path (Darwin only)'#010+
   '**2FE<x>_Set exe/unit output path to <x>'#010+
-  '**2Fi<x>_Add <','x> to include path'#010+
+  '**2Fi<x>_Add <x> to include path'#010+
   '**2Fl<x>_Add <x> to library path'#010+
-  '**2FL<x>_Use <x> as dynamic linker'#010+
+  '**2FL<x>_Use <x> as dynamic linker',#010+
   '**2Fm<x>_Load unicode conversion table from <x>.txt in the compiler di'+
   'r'#010+
   '**2Fo<x>_Add <x> to object path'#010+
   '**2Fr<x>_Load error message file <x>'#010+
-  '**2FR<x>_Set',' resource (.res) linker to <x>'#010+
+  '**2FR<x>_Set resource (.res) linker to <x>'#010+
   '**2Fu<x>_Add <x> to unit path'#010+
-  '**2FU<x>_Set unit output path to <x>, overrides -FE'#010+
+  '**2FU<x>_Set unit output ','path to <x>, overrides -FE'#010+
   '**2FW<x>_Store generated whole-program optimization feedback in <x>'#010+
-  '**2Fw<x>_Load previously stored whole-program optimization ','feedback '+
-  'from <x>'#010+
+  '**2Fw<x>_Load previously stored whole-program optimization feedback fr'+
+  'om <x>'#010+
   '*g1g_Generate debug information (default format for target)'#010+
-  '*g2gc_Generate checks for pointers'#010+
+  '*g2gc_Ge','nerate checks for pointers'#010+
   '*g2gh_Use heaptrace unit (for memory leak/corruption debugging)'#010+
   '*g2gl_Use line info unit (show more info with backtraces)'#010+
-  '*g2go','<x>_Set debug information options'#010+
-  '*g3godwarfsets_ Enable DWARF '#039'set'#039' type debug information (bre'+
-  'aks gdb < 6.5)'#010+
+  '*g2go<x>_Set debug information options'#010+
+  '*g3godwarfsets_ Enable DWARF '#039'set'#039' type debug inform','ation (b'+
+  'reaks gdb < 6.5)'#010+
   '*g3gostabsabsincludes_ Store absolute/full include file paths in Stabs'+
   #010+
-  '*g3godwarfmethodclassprefix_ Prefix method names in DWARF ','with class'+
-  ' name'#010+
+  '*g3godwarfmethodclassprefix_ Prefix method names in DWARF with class n'+
+  'ame'#010+
   '*g2gp_Preserve case in stabs symbol names'#010+
-  '*g2gs_Generate Stabs debug information'#010+
+  '*g2gs_Generate Stabs debug i','nformation'#010+
   '*g2gt_Trash local variables (to detect uninitialized uses)'#010+
   '*g2gv_Generates programs traceable with Valgrind'#010+
-  '*g2gw_Generate DWARFv2 debug inform','ation (same as -gw2)'#010+
+  '*g2gw_Generate DWARFv2 debug information (same as -gw2)'#010+
   '*g2gw2_Generate DWARFv2 debug information'#010+
-  '*g2gw3_Generate DWARFv3 debug information'#010+
+  '*g2gw3_Generate DWARFv3',' debug information'#010+
   '*g2gw4_Generate DWARFv4 debug information (experimental)'#010+
   '**1i_Information'#010+
   '**2iD_Return compiler date'#010+
-  '**2iV_Return short compiler versio','n'#010+
+  '**2iV_Return short compiler version'#010+
   '**2iW_Return full compiler version'#010+
   '**2iSO_Return compiler OS'#010+
-  '**2iSP_Return compiler host processor'#010+
+  '**2iSP_Return compiler ','host processor'#010+
   '**2iTO_Return target OS'#010+
   '**2iTP_Return target processor'#010+
   '**1I<x>_Add <x> to include path'#010+
   '**1k<x>_Pass <x> to the linker'#010+
   '**1l_Write logo'#010+
-  '**1M<','x>_Set language mode to <x>'#010+
+  '**1M<x>_Set language mode to <x>'#010+
   '**2Mfpc_Free Pascal dialect (default)'#010+
-  '**2Mobjfpc_FPC mode with Object Pascal support'#010+
+  '**2Mobjfpc_FPC mode ','with Object Pascal support'#010+
   '**2Mdelphi_Delphi 7 compatibility mode'#010+
   '**2Mtp_TP/BP 7.0 compatibility mode'#010+
-  '**2Mmacpas_Macintosh Pascal dialects compatibility m','ode'#010+
+  '**2Mmacpas_Macintosh Pascal dialects compatibility mode'#010+
   '**1n_Do not read the default config files'#010+
   '**1N<x>_Node tree optimizations'#010+
-  '**2Nu_Unroll loops'#010+
+  '**2Nu_Un','roll loops'#010+
   '**1o<x>_Change the name of the executable produced to <x>'#010+
   '**1O<x>_Optimizations:'#010+
   '**2O-_Disable optimizations'#010+
-  '**2O1_Level 1 optimizations (quick',' and debugger friendly)'#010+
+  '**2O1_Level 1 optimizations (quick and debugger friendly)'#010+
   '**2O2_Level 2 optimizations (-O1 + quick optimizations)'#010+
-  '**2O3_Level 3 optimizations (-O2 + slow optimizations)'#010+
+  '**2O3_','Level 3 optimizations (-O2 + slow optimizations)'#010+
   '**2Oa<x>=<y>_Set alignment'#010+
   '**2Oo[NO]<x>_Enable or disable optimizations, see fpc -i for possible '+
   'values'#010+
-  '*','*2Op<x>_Set target cpu for optimizing, see fpc -i for possible valu'+
-  'es'#010+
-  '**2OW<x>_Generate whole-program optimization feedback for optimization'+
-  ' <x>, see fpc -i for possible values'#010+
-  '**2Ow<x>_Perform whole-program optimization <x>, see fpc -i for',' poss'+
-  'ible values'#010+
+  '**2Op<x>_Set target cpu for optimizing, see fpc -i for possible values'+
+  #010+
+  '**2OW<x>_Generat','e whole-program optimization feedback for optimizati'+
+  'on <x>, see fpc -i for possible values'#010+
+  '**2Ow<x>_Perform whole-program optimization <x>, see fpc -i for possib'+
+  'le values'#010+
   '**2Os_Optimize for size rather than speed'#010+
-  '**1pg_Generate profile code for gprof (defines FPC_PROFILE)'#010+
+  '**1pg_Generate profile code',' for gprof (defines FPC_PROFILE)'#010+
   '**1R<x>_Assembler reading style:'#010+
   '**2Rdefault_Use default assembler for target'#010+
   '3*2Ratt_Read AT&T style assembler'#010+
-  '3*2Rintel','_Read Intel style assembler'#010+
+  '3*2Rintel_Read Intel style assembler'#010+
   '6*2RMOT_Read motorola style assembler'#010+
-  '**1S<x>_Syntax options:'#010+
+  '**1S<x>_Syntax optio','ns:'#010+
   '**2S2_Same as -Mobjfpc'#010+
   '**2Sc_Support operators like C (*=,+=,/= and -=)'#010+
   '**2Sa_Turn on assertions'#010+
   '**2Sd_Same as -Mdelphi'#010+
-  '**2Se<x>_Error options. <x> is',' a combination of the following:'#010+
-  '**3*_<n> : Compiler halts after the <n> errors (default is 1)'#010+
+  '**2Se<x>_Error options. <x> is a combination of the following:'#010+
+  '**3*_<n> : Compiler halts after the <n> errors (defau','lt is 1)'#010+
   '**3*_w : Compiler also halts after warnings'#010+
   '**3*_n : Compiler also halts after notes'#010+
   '**3*_h : Compiler also halts after hints'#010+
-  '**2Sg_Enable LABEL ','and GOTO (default in -Mtp and -Mdelphi)'#010+
-  '**2Sh_Use ansistrings by default instead of shortstrings'#010+
+  '**2Sg_Enable LABEL and GOTO (default in -Mtp and -Mdelphi)'#010+
+  '**2Sh_Use ansistrings by default instead of sh','ortstrings'#010+
   '**2Si_Turn on inlining of procedures/functions declared as "inline"'#010+
   '**2Sk_Load fpcylix unit'#010+
   '**2SI<x>_Set interface style to <x>'#010+
-  '**3SIcom_COM co','mpatible interface (default)'#010+
+  '**3SIcom_COM compatible interface (default)'#010+
   '**3SIcorba_CORBA compatible interface'#010+
-  '**2Sm_Support macros like C (global)'#010+
+  '**2Sm_Support macro','s like C (global)'#010+
   '**2So_Same as -Mtp'#010+
   '**2Ss_Constructor name must be init (destructor must be done)'#010+
-  '**2Sx_Enable exception keywords (default in Delphi/ObjF','PC modes)'#010+
+  '**2Sx_Enable exception keywords (default in Delphi/ObjFPC modes)'#010+
   '**2Sy_@<pointer> returns a typed pointer, same as $T+'#010+
-  '**1s_Do not call assembler and linker'#010+
+  '**1s_Do not call assem','bler and linker'#010+
   '**2sh_Generate script to link on host'#010+
   '**2st_Generate script to link on target'#010+
   '**2sr_Skip register allocation phase (use with -alr)'#010+
-  '**1T<x>','_Target operating system:'#010+
+  '**1T<x>_Target operating system:'#010+
   '3*2Tdarwin_Darwin/Mac OS X'#010+
-  '3*2Temx_OS/2 via EMX (including EMX/RSX extender)'#010+
+  '3*2Temx_OS/2 via EMX (including E','MX/RSX extender)'#010+
   '3*2Tfreebsd_FreeBSD'#010+
   '3*2Tgo32v2_Version 2 of DJ Delorie DOS extender'#010+
-  '3*2Tiphonesim_ iPhoneSimulator from iOS SDK 3.2+ (older versions: -Td',
-  'arwin)'#010+
+  '3*2Tiphonesim_ iPhoneSimulator from iOS SDK 3.2+ (older versions: -Tda'+
+  'rwin)'#010+
   '3*2Tlinux_Linux'#010+
   '3*2Tnetbsd_NetBSD'#010+
   '3*2Tnetware_Novell Netware Module (clib)'#010+
-  '3*2Tnetwlibc_Novell Netware Module (libc)'#010+
+  '3*2T','netwlibc_Novell Netware Module (libc)'#010+
   '3*2Topenbsd_OpenBSD'#010+
   '3*2Tos2_OS/2 / eComStation'#010+
   '3*2Tsunos_SunOS/Solaris'#010+
   '3*2Tsymbian_Symbian OS'#010+
   '3*2Tsolaris_Solaris'#010+
-  '3*','2Twatcom_Watcom compatible DOS extender'#010+
+  '3*2Twatcom_Watcom compatible DOS extender'#010+
   '3*2Twdosx_WDOSX DOS extender'#010+
-  '3*2Twin32_Windows 32 Bit'#010+
+  '3*2Twin32_Windows',' 32 Bit'#010+
   '3*2Twince_Windows CE'#010+
   '4*2Tdarwin_Darwin/Mac OS X'#010+
   '4*2Tlinux_Linux'#010+
   '4*2Twin64_Win64 (64 bit Windows systems)'#010+
   '6*2Tamiga_Commodore Amiga'#010+
-  '6*2Tatari_Atari',' ST/STe/TT'#010+
+  '6*2Tatari_Atari ST/STe/TT'#010+
   '6*2Tlinux_Linux'#010+
   '6*2Tpalmos_PalmOS'#010+
   'A*2Tdarwin_Darwin/iPhoneOS/iOS'#010+
-  'A*2Tlinux_Linux'#010+
+  'A*2Tlinux_','Linux'#010+
   'A*2Twince_Windows CE'#010+
   'P*2Tamiga_AmigaOS'#010+
   'P*2Tdarwin_Darwin/Mac OS X'#010+
   'P*2Tlinux_Linux'#010+
   'P*2Tmacos_Mac OS (classic)'#010+
   'P*2Tmorphos_MorphOS'#010+
-  'S*2Tsolaris_Solaris',#010+
+  'S*2Tsolaris_Solaris'#010+
   'S*2Tlinux_Linux'#010+
   '**1u<x>_Undefines the symbol <x>'#010+
   '**1U_Unit options:'#010+
-  '**2Un_Do not check where the unit name matches the file name'#010+
+  '**2Un_Do not chec','k where the unit name matches the file name'#010+
   '**2Ur_Generate release unit files (never automatically recompiled)'#010+
   '**2Us_Compile a system unit'#010+
-  '**1v<x>_Be verb','ose. <x> is a combination of the following letters:'#010+
-  '**2*_e : Show errors (default)       0 : Show nothing (except errors)'#010+
+  '**1v<x>_Be verbose. <x> is a combination of the following letters:'#010+
+  '**2*_e : Show errors (default)    ','   0 : Show nothing (except errors'+
+  ')'#010+
   '**2*_w : Show warnings               u : Show unit info'#010+
-  '**2*_n : Show notes                  t : Show tried/used files',#010+
+  '**2*_n : Show notes                  t : Show tried/used files'#010+
   '**2*_h : Show hints                  c : Show conditionals'#010+
-  '**2*_i : Show general info           d : Show debug info'#010+
+  '**2*_i : Show general info','           d : Show debug info'#010+
   '**2*_l : Show linenumbers            r : Rhide/GCC compatibility mode'#010+
-  '**2*_s : Show time stamps            q : Show message',' numbers'#010+
+  '**2*_s : Show time stamps            q : Show message numbers'#010+
   '**2*_a : Show everything             x : Executable info (Win32 only)'#010+
-  '**2*_b : Write file names messages   p : Write tree.log with parse tre'+
-  'e'#010+
+  '**2*_b ',': Write file names messages   p : Write tree.log with parse t'+
+  'ree'#010+
   '**2*_    with full path              v : Write fpcdebug.txt with'#010+
-  '**2*_                   ','                 lots of debugging info'#010+
-  '**2*_m<x>,<y> : Don'#039't show messages numbered <x> and <y>'#010+
+  '**2*_                                    lots of debugging info'#010+
+  '**2*_m<x>,<y> : Don'#039't show messages numbered <','x> and <y>'#010+
   '**1W<x>_Target-specific options (targets)'#010+
   '3*2WA_Specify native type application (Windows)'#010+
   '4*2WA_Specify native type application (Windows)'#010+
-  'A*2WA','_Specify native type application (Windows)'#010+
-  '3*2Wb_Create a bundle instead of a library (Darwin)'#010+
+  'A*2WA_Specify native type application (Windows)'#010+
+  '3*2Wb_Create a bundle instead of a library ','(Darwin)'#010+
   'P*2Wb_Create a bundle instead of a library (Darwin)'#010+
   'p*2Wb_Create a bundle instead of a library (Darwin)'#010+
-  'A*2Wb_Create a bundle instead of a librar','y (Darwin)'#010+
+  'A*2Wb_Create a bundle instead of a library (Darwin)'#010+
   '4*2Wb_Create a bundle instead of a library (Darwin)'#010+
-  '3*2WB_Create a relocatable image (Windows, Symbian)'#010+
+  '3*2WB_Create a relocata','ble image (Windows, Symbian)'#010+
   '3*2WBxxxx_Set image base to xxxx (Windows, Symbian)'#010+
   '4*2WB_Create a relocatable image (Windows)'#010+
-  '4*2WBxxxx_Set image base to xx','xx (Windows)'#010+
+  '4*2WBxxxx_Set image base to xxxx (Windows)'#010+
   'A*2WB_Create a relocatable image (Windows, Symbian)'#010+
-  'A*2WBxxxx_Set image base to xxxx (Windows, Symbian)'#010+
+  'A*2WBxxxx_Set image b','ase to xxxx (Windows, Symbian)'#010+
   '3*2WC_Specify console type application (EMX, OS/2, Windows)'#010+
   '4*2WC_Specify console type application (EMX, OS/2, Windows)'#010+
-  'A*2','WC_Specify console type application (Windows)'#010+
-  'P*2WC_Specify console type application (Classic Mac OS)'#010+
+  'A*2WC_Specify console type application (Windows)'#010+
+  'P*2WC_Specify console type application (','Classic Mac OS)'#010+
   '3*2WD_Use DEFFILE to export functions of DLL or EXE (Windows)'#010+
   '4*2WD_Use DEFFILE to export functions of DLL or EXE (Windows)'#010+
-  'A*2WD_Use DEFF','ILE to export functions of DLL or EXE (Windows)'#010+
-  '3*2We_Use external resources (Darwin)'#010+
+  'A*2WD_Use DEFFILE to export functions of DLL or EXE (Windows)'#010+
+  '3*2We_Use external resources (Darwin)'#010,
   '4*2We_Use external resources (Darwin)'#010+
   'A*2We_Use external resources (Darwin)'#010+
   'P*2We_Use external resources (Darwin)'#010+
   'p*2We_Use external resources (Darwin)'#010+
-  '3*','2WF_Specify full-screen type application (EMX, OS/2)'#010+
-  '3*2WG_Specify graphic type application (EMX, OS/2, Windows)'#010+
+  '3*2WF_Specify full-screen type application (EMX, OS/2)'#010+
+  '3*2WG_Specify graphic type applic','ation (EMX, OS/2, Windows)'#010+
   '4*2WG_Specify graphic type application (EMX, OS/2, Windows)'#010+
   'A*2WG_Specify graphic type application (Windows)'#010+
-  'P*2WG_Specify grap','hic type application (Classic Mac OS)'#010+
+  'P*2WG_Specify graphic type application (Classic Mac OS)'#010+
   '3*2Wi_Use internal resources (Darwin)'#010+
-  '4*2Wi_Use internal resources (Darwin)'#010+
+  '4*2Wi_Use ','internal resources (Darwin)'#010+
   'A*2Wi_Use internal resources (Darwin)'#010+
   'P*2Wi_Use internal resources (Darwin)'#010+
   'p*2Wi_Use internal resources (Darwin)'#010+
-  '3*2WI_Turn o','n/off the usage of import sections (Windows)'#010+
-  '4*2WI_Turn on/off the usage of import sections (Windows)'#010+
+  '3*2WI_Turn on/off the usage of import sections (Windows)'#010+
+  '4*2WI_Turn on/off the usage of import sec','tions (Windows)'#010+
   'A*2WI_Turn on/off the usage of import sections (Windows)'#010+
+  '3*2WM<x>_Minimum Mac OS X deployment version: 10.4, 10.5.1, ... (Darwi'+
+  'n)'#010+
+  '4*2WM<x>_Minimum Mac OS X deployment version: 10.4, 10.5.1, ... (Darwi'+
+  'n)'#010+
+  'p*2WM<x>_Minimum Mac ','OS X deployment version: 10.4, 10.5.1, ... (Dar'+
+  'win)'#010+
+  'P*2WM<x>_Minimum Mac OS X deployment version: 10.4, 10.5.1, ... (Darwi'+
+  'n)'#010+
   '3*2WN_Do not generate relocation code, needed for debugging (Windows)'#010+
-  '4*2WN_Do no','t generate relocation code, needed for debugging (Windows'+
+  '4*2WN_Do not generate relocation code, needed',' for debugging (Windows'+
   ')'#010+
   'A*2WN_Do not generate relocation code, needed for debugging (Windows)'#010+
   'A*2Wpxxxx_Specify the controller type, see fpc -i for possible values'#010+
-  'V*2Wpxxxx_Specify the controller type, se','e fpc -i for possible value'+
-  's'#010+
+  'V*2Wpxxxx_Specify the controller type, see fpc -i for possible values'#010+
+  '3*2WP','<x>_Minimum iOS deployment version: 3.0, 5.0.1, ... (iphonesim)'+
+  #010+
+  'A*2WP<x>_Minimum iOS deployment version: 3.0, 5.0.1, ... (Darwin)'#010+
   '3*2WR_Generate relocation code (Windows)'#010+
   '4*2WR_Generate relocation code (Windows)'#010+
-  'A*2WR_Generate relocation code (Windows)'#010+
+  'A*2WR_Generate relocation co','de (Windows)'#010+
   'P*2WT_Specify MPW tool type application (Classic Mac OS)'#010+
-  '**2WX_Enable executable stack (','Linux)'#010+
+  '**2WX_Enable executable stack (Linux)'#010+
   '**1X_Executable options:'#010+
   '**2Xc_Pass --shared/-dynamic to the linker (BeOS, Darwin, FreeBSD, Lin'+
   'ux)'#010+
-  '**2Xd_Do not use standard library search path (needed for cross compil'+
-  'e)'#010+
+  '**2Xd_Do not use standard library',' search path (needed for cross comp'+
+  'ile)'#010+
   '**2Xe_Use external linker'#010+
-  '**2Xg_Create debuginfo in a separat','e file and add a debuglink sectio'+
-  'n to executable'#010+
+  '**2Xg_Create debuginfo in a separate file and add a debuglink section '+
+  'to executable'#010+
   '**2XD_Try to link units dynamically      (defines FPC_LINK_DYNAMIC)'#010+
-  '**2Xi_Use internal linker'#010+
+  '**2Xi_Use internal lin','ker'#010+
   '**2Xm_Generate link map'#010+
   '**2XM<x>_Set the name of the '#039'main'#039' program routine (default i'+
   's '#039'main'#039')'#010+
-  '*','*2XP<x>_Prepend the binutils names with the prefix <x>'#010+
+  '**2XP<x>_Prepend the binutils names with the prefix <x>'#010+
   '**2Xr<x>_Set the linker'#039's rlink-path to <x> (needed for cross comp'+
-  'ile, see the ld manual for more information) (BeOS, Linux)'#010+
-  '**2XR<x>_Prepend <x> to all linker search paths (BeOS, Darwi','n, FreeB'+
-  'SD, Linux, Mac OS, Solaris)'#010+
+  'ile, see the ld ma','nual for more information) (BeOS, Linux)'#010+
+  '**2XR<x>_Prepend <x> to all linker search paths (BeOS, Darwin, FreeBSD'+
+  ', Linux, Mac OS, Solaris)'#010+
   '**2Xs_Strip all symbols from executable'#010+
-  '**2XS_Try to link units statically (default, defines FPC_LINK_STATIC)'#010+
+  '**2XS_Try to link units statically (default, defines FPC_LINK_S','TATIC'+
+  ')'#010+
   '**2Xt_Link with static libraries (-static is passed to linker)'#010+
-  '**2XX_Try to smartlink units   ','          (defines FPC_LINK_SMART)'#010+
+  '**2XX_Try to smartlink units             (defines FPC_LINK_SMART)'#010+
   '**1*_'#010+
   '**1?_Show this help'#010+
   '**1h_Shows this help without waiting'

compiler/options.pas

@@ -64,6 +64,10 @@ Type
     procedure TargetOptions(def:boolean);
     procedure CheckOptionsCompatibility;
     procedure ForceStaticLinking;
+   protected
+    MacVersionSet: boolean;
+    function ParseMacVersionMin(out minstr, emptystr: string; const compvarname, value: string; ios: boolean): boolean;
+    procedure MaybeSetDefaultMacVersionMacro;
   end;
 
   TOptionClass=class of toption;
@@ -476,6 +480,160 @@ begin
 end;
 
 
+function toption.ParseMacVersionMin(out minstr, emptystr: string; const compvarname, value: string; ios: boolean): boolean;
+
+  function subval(start,maxlen: longint; out stop: longint): string;
+    var
+      i: longint;
+    begin
+      result:='';
+      i:=start;
+      while (i<=length(value)) and
+            (value[i] in ['0'..'9']) do
+        inc(i);
+      { sufficient amount of digits? }
+      if (i=start) or
+         (i-start>maxlen) then
+        exit;
+      result:=copy(value,start,i-start);
+      stop:=i;
+    end;
+
+  var
+    temp,
+    compvarvalue: string[15];
+    i: longint;
+  begin
+    minstr:=value;
+    emptystr:='';
+    MacVersionSet:=false;
+    { check whether the value is a valid version number }
+    if value='' then
+      begin
+        undef_system_macro(compvarname);
+        exit(true);
+      end;
+    { major version number }
+    compvarvalue:=subval(1,2,i);
+    { not enough digits -> invalid }
+    if compvarvalue='' then
+      exit(false);
+    { already end of string -> invalid }
+    if (i>=length(value)) or
+       (value[i]<>'.') then
+      exit(false);
+    { minor version number }
+    temp:=subval(i+1,2,i);
+    if temp='' then
+      exit(false);
+    { on Mac OS X, the minor version number is limited to 1 digit }
+    if not ios then
+      begin
+        if length(temp)<>1 then
+          exit(false);
+      end
+    { the minor version number always takes up two digits on iOS }
+    else if length(temp)=1 then
+      temp:='0'+temp;
+    compvarvalue:=compvarvalue+temp;
+    { optional patch level }
+    if i<=length(value) then
+      begin
+        if value[i]<>'.' then
+          exit(false);
+        temp:=subval(i+1,2,i);
+        if temp='' then
+          exit(false);
+        { there's only room for a single digit patch level in the version macro
+          for Mac OS X. gcc sets it to zero if there are more digits, but that
+          seems worse than clamping to 9 (don't declare as invalid like with
+          minor version number, because there is a precedent like 10.4.11)
+        }
+        if not ios then
+          begin
+            if length(temp)<>1 then
+              temp:='9';
+          end
+        else
+          begin
+            { on iOS, the patch level is always two digits }
+            if length(temp)=1 then
+              temp:='0'+temp;
+          end;
+        compvarvalue:=compvarvalue+temp;
+        { must be the end }
+        if i<=length(value) then
+          exit(false);
+      end
+    else if not ios then
+      compvarvalue:=compvarvalue+'0'
+    else
+      compvarvalue:=compvarvalue+'00';
+    set_system_compvar(compvarname,compvarvalue);
+    MacVersionSet:=true;
+    result:=true;
+  end;
+
+
+procedure TOption.MaybeSetDefaultMacVersionMacro;
+var
+  envstr: ansistring;
+begin
+  if not(target_info.system in systems_darwin) then
+    exit;
+  if MacVersionSet then
+    exit;
+  { check for deployment target set via environment variable }
+  if not(target_info.system in [system_i386_iphonesim,system_arm_darwin]) then
+    begin
+      envstr:=GetEnvironmentVariable('MACOSX_DEPLOYMENT_TARGET');
+      if envstr<>'' then
+        if not ParseMacVersionMin(MacOSXVersionMin,iPhoneOSVersionMin,'MAC_OS_X_VERSION_MIN_REQUIRED',envstr,false) then
+          Message1(option_invalid_macosx_deployment_target,envstr)
+        else
+          exit;
+    end
+  else
+    begin
+      envstr:=GetEnvironmentVariable('IPHONEOS_DEPLOYMENT_TARGET');
+      if envstr<>'' then
+        if not ParseMacVersionMin(iPhoneOSVersionMin,MacOSXVersionMin,'IPHONE_OS_VERSION_MIN_REQUIRED',envstr,true) then
+          Message1(option_invalid_iphoneos_deployment_target,envstr)
+        else
+          exit;
+    end;
+  { nothing specified -> defaults }
+  case target_info.system of
+    system_powerpc_darwin:
+      begin
+        set_system_compvar('MAC_OS_X_VERSION_MIN_REQUIRED','1030');
+        MacOSXVersionMin:='10.3';
+      end;
+    system_powerpc64_darwin,
+    system_i386_darwin:
+      begin
+        set_system_compvar('MAC_OS_X_VERSION_MIN_REQUIRED','1040');
+        MacOSXVersionMin:='10.4';
+      end;
+    system_x86_64_darwin:
+      begin
+        { actually already works on 10.4, but it's unlikely any 10.4 system
+          with an x86-64 is still in use, so don't default to it }
+        set_system_compvar('MAC_OS_X_VERSION_MIN_REQUIRED','1050');
+        MacOSXVersionMin:='10.5';
+      end;
+    system_arm_darwin,
+    system_i386_iphonesim:
+      begin
+        set_system_compvar('IPHONE_OS_VERSION_MIN_REQUIRED','30000');
+        MacOSXVersionMin:='3.0';
+      end;
+    else
+      internalerror(2012031001);
+  end;
+end;
+
+
 function Toption.Unsetbool(var Opts:TCmdStr; Pos: Longint):boolean;
 { checks if the character after pos in Opts is a + or a - and returns resp.
   false or true. If it is another character (or none), it also returns false }
@@ -1598,6 +1756,16 @@ begin
                         else
                           IllegalPara(opt);
                       end;
+                    'M':
+                      begin
+                        if (target_info.system in (systems_darwin-[system_i386_iphonesim])) and
+                           ParseMacVersionMin(MacOSXVersionMin,iPhoneOSVersionMin,'MAC_OS_X_VERSION_MIN_REQUIRED',copy(More,2,255),false) then
+                          begin
+                            break;
+                          end
+                        else
+                          IllegalPara(opt);
+                      end;
                     'N':
                       begin
                         if target_info.system in systems_all_windows then
@@ -1622,6 +1790,16 @@ begin
 {$endif defined(arm) or defined(avr)}
                           IllegalPara(opt);
                       end;
+                    'P':
+                      begin
+                        if (target_info.system in [system_i386_iphonesim,system_arm_darwin]) and
+                           ParseMacVersionMin(iPhoneOSVersionMin,MacOSXVersionMin,'IPHONE_OS_VERSION_MIN_REQUIRED',copy(More,2,255),true) then
+                          begin
+                            break;
+                          end
+                        else
+                          IllegalPara(opt);
+                      end;
                     'R':
                       begin
                         if target_info.system in systems_all_windows then
@@ -2359,6 +2537,7 @@ begin
   ParaLibraryPath:=TSearchPathList.Create;
   ParaFrameworkPath:=TSearchPathList.Create;
   FillChar(ParaAlignment,sizeof(ParaAlignment),0);
+  MacVersionSet:=false;
 end;
 
 
@@ -2847,6 +3026,9 @@ begin
      not(cs_link_separate_dbg_file in init_settings.globalswitches) then
     exclude(init_settings.globalswitches,cs_link_strip);
 
+  { set Mac OS X version default macros if not specified explicitly }
+  option.MaybeSetDefaultMacVersionMacro;
+
   { force fpu emulation on arm/wince, arm/gba, arm/embedded, arm/nds and
     arm/darwin if fpu type not explicitly set }
   if not(option.FPUSetExplicitly) and

compiler/systems/t_bsd.pas

@@ -61,6 +61,7 @@ implementation
       LdSupportsNoResponseFile : boolean;
       LibrarySuffix : Char;
       Function  WriteResponseFile(isdll:boolean) : Boolean;
+      function GetDarwinCrt1ObjName(isdll: boolean): TCmdStr;
       Function GetDarwinPrtobjName(isdll: boolean): TCmdStr;
     public
       constructor Create;override;
@@ -223,32 +224,80 @@ else
 End;
 
 
-Function TLinkerBSD.GetDarwinPrtobjName(isdll: boolean): TCmdStr;
+function TLinkerBSD.GetDarwinCrt1ObjName(isdll: boolean): TCmdStr;
 begin
-  if not(isdll) then
-    if not(cs_profile in current_settings.moduleswitches) then
-      begin
-        if not librarysearchpath.FindFile('crt1.o',false,result) then
-          result:='/usr/lib/crt1.o';
-      end
-    else
-      begin
-        if not librarysearchpath.FindFile('gcrt1.o',false,result) then
-          result:='/usr/lib/gcrt1.o';
-      end
+  if not isdll then
+    begin
+      if not(cs_profile in current_settings.moduleswitches) then
+        begin
+          { x86: crt1.10.6.o -> crt1.10.5.o -> crt1.o }
+          { others: crt1.10.5 -> crt1.o }
+{$if defined(i386) or defined(x86_64)}
+          if CompareVersionStrings(MacOSXVersionMin,'10.6')>=0 then
+            exit('crt1.10.6.o');
+{$endif}
+          if CompareVersionStrings(MacOSXVersionMin,'10.5')>=0 then
+            exit('crt1.10.5.o');
+          { iOS/simulator: crt1.3.1.o -> crt1.o }
+{$if defined(i386) or defined(arm)}
+          if {$ifdef i386}(target_info.system=system_i386_iphonesim) and{$endif}
+             (CompareVersionStrings(iPhoneOSVersionMin,'3.1')>=0) then
+             exit('crt1.3.1.o');
+{$endif}
+          { nothing special -> default }
+          result:='crt1.o';
+        end
+      else
+        result:='gcrt1.o';
+    end
   else
     begin
       if (apptype=app_bundle) then
         begin
-          if not librarysearchpath.FindFile('bundle1.o',false,result) then
-            result:='/usr/lib/bundle1.o'
+          { < 10.6: bundle1.o
+            >= 10.6: nothing }
+          if CompareVersionStrings(MacOSXVersionMin,'10.6')>=0 then
+            exit('');
+          { iOS/simulator: < 3.1: bundle1.o
+                           >= 3.1: nothing }
+{$if defined(i386) or defined(arm)}
+          if {$ifdef i386}(target_info.system=system_i386_iphonesim) and{$endif}
+             (CompareVersionStrings(iPhoneOSVersionMin,'3.1')>=0) then
+            exit('');
+{$endif}
+          result:='bundle1.o';
         end
       else
         begin
-          if not librarysearchpath.FindFile('dylib1.o',false,result) then
-            result:='/usr/lib/dylib1.o'
+          { >= 10.6: nothing
+            = 10.5: dylib1.10.5.o
+            < 10.5: dylib1.o
+          }
+          if CompareVersionStrings(MacOSXVersionMin,'10.6')>=0 then
+            exit('');
+          if CompareVersionStrings(MacOSXVersionMin,'10.5')>=0 then
+            exit('dylib1.10.5.o');
+          { iOS/simulator: < 3.1: dylib1.o
+                           >= 3.1: nothing }
+{$if defined(i386) or defined(arm)}
+          if {$ifdef i386}(target_info.system=system_i386_iphonesim) and{$endif}
+             (CompareVersionStrings(iPhoneOSVersionMin,'3.1')>=0) then
+            exit('');
+{$endif}
+          result:='dylib1.o';
         end;
     end;
+end;
+
+
+Function TLinkerBSD.GetDarwinPrtobjName(isdll: boolean): TCmdStr;
+var
+  startupfile: TCmdStr;
+begin
+  startupfile:=GetDarwinCrt1ObjName(isdll);
+  if (startupfile<>'') and
+     not librarysearchpath.FindFile(startupfile,false,result) then
+    result:='/usr/lib/'+startupfile;
   result:=maybequoted(result);
 end;
 
@@ -357,6 +406,16 @@ begin
             to be specified }
           LinkRes.Add(lower(cputypestr[current_settings.cputype]));
       end;
+      if MacOSXVersionMin<>'' then
+        begin
+          LinkRes.Add('-macosx_version_min');
+          LinkRes.Add(MacOSXVersionMin);
+        end
+      else if iPhoneOSVersionMin<>'' then
+        begin
+          LinkRes.Add('-ios_version_min');
+          LinkRes.Add(iPhoneOSVersionMin);
+        end;
     end;
   { Write path to search libraries }
   HPath:=TCmdStrListItem(current_module.locallibrarysearchpath.First);