* define USEENV to use environment string, automatically set when

    OS_SOURCE=win32.

utils/fpcm/fpcmake.ini

@@ -19,9 +19,9 @@ override PATH:=$(subst \,/,$(PATH))
 # that normally doesn't exists in path names.
 ifeq ($(findstring ;,$(PATH)),)
 inUnix=1
-SEARCHPATH=$(subst :, ,$(PATH))
+SEARCHPATH:=$(subst :, ,$(PATH))
 else
-SEARCHPATH=$(subst ;, ,$(PATH))
+SEARCHPATH:=$(subst ;, ,$(PATH))
 endif
 
 # Search for PWD and determine also if we are under linux
@@ -74,7 +74,7 @@ endif
 ifdef inUnix
 PATHSEP=/
 else
-PATHSEP=$(subst /,\,/)
+PATHSEP:=$(subst /,\,/)
 endif
 
 # Base dir
@@ -166,10 +166,10 @@ endif
 endif
 
 # Units dir
-UNITSDIR=$(wildcard $(FPCDIR)/units/$(OS_TARGET))
+UNITSDIR:=$(wildcard $(FPCDIR)/units/$(OS_TARGET))
 
 # Packages dir
-PACKAGESDIR=$(wildcard $(FPCDIR) $(FPCDIR)/packages)
+PACKAGESDIR:=$(wildcard $(FPCDIR) $(FPCDIR)/packages)
 
 
 [shelltools]
@@ -737,7 +737,12 @@ override FPCOPT+=@$(CFGFILE)
 endif
 
 # For win32 the options are passed using the environment FPCEXTCMD
+# to prevent to long commandlines
 ifeq ($(OS_SOURCE),win32)
+USEENV=1
+endif
+
+ifdef USEENV
 override FPCEXTCMD:=$(FPCOPT)
 override FPCOPT:=!FPCEXTCMD
 export FPCEXTCMD
@@ -999,7 +1004,7 @@ fpc_sourceinstall: distclean
 fpc_exampleinstall: $(addsuffix _distclean,$(TARGET_EXAMPLEDIRS))
 ifdef HASEXAMPLES
         $(MKDIR) $(INSTALL_EXAMPLEDIR)
-endif	
+endif
 ifdef EXAMPLESOURCEFILES
         $(COPY) $(EXAMPLESOURCEFILES) $(INSTALL_EXAMPLEDIR)
 endif