CMake: Configure: Add XYZZY_LIBRARY(IES) variable declarations for Find packages. Other cleanup and reorginizaion.

cmake/modules/FindCg.cmake

@@ -9,11 +9,13 @@
 #   CG_IPATH   - the NvidiaCg include directory
 #   CG_LPATH   - the NvidiaCg library directory
 #   CG_LIBS    - the Cg components found
+#   CG_LIBRARY - the path to the library binary
 #
-#   FOUND_CGGL - system has CgGL
-#   CGGL_IPATH - the CgGL include directory
-#   CGGL_LPATH - the CgGL library directory
-#   CGGL_LIBS  - the CgGL components found
+#   FOUND_CGGL   - system has CgGL
+#   CGGL_IPATH   - the CgGL include directory
+#   CGGL_LPATH   - the CgGL library directory
+#   CGGL_LIBS    - the CgGL components found
+#   CGGL_LIBRARY - the path to the library binary
 #
 
 
@@ -58,8 +60,6 @@ macro(find_cggl)
 		set(CGGL_LPATH "${CGGL_LIBRARY_DIR}" CACHE PATH "The path to the CgGL library directory.") # Library path
 
 		unset(CGGL_LIBRARY_DIR)
-		unset(CGGL_LIBRARY CACHE)
-
 
 		# Check if we have everything we need
 		if(CGGL_IPATH AND CGGL_LPATH)
@@ -73,6 +73,7 @@ macro(find_cggl)
 
 		mark_as_advanced(CGGL_IPATH)
 		mark_as_advanced(CGGL_LPATH)
+		mark_as_advanced(CGGL_LIBRARY)
 	endif()
 endmacro()
 
@@ -165,7 +166,6 @@ else()
 		set(CG_LPATH "${CG_LIBRARY_DIR}" CACHE PATH "The path to NvidiaCG's library directory.") # Library path
 
 		unset(CG_LIBRARY_DIR)
-		unset(CG_LIBRARY CACHE)
 	endif()
 
 	# Check if we have everything we need
@@ -186,4 +186,5 @@ else()
 
 	mark_as_advanced(CG_IPATH)
 	mark_as_advanced(CG_LPATH)
+	mark_as_advanced(CG_LIBRARY)
 endif()

cmake/modules/FindFFTW.cmake

@@ -6,8 +6,9 @@
 #
 # It sets the following variables:
 #  FOUND_FFTW  - true if fftw is found on the system
-#  FFTW_IPATH - the fftw include directory
-#  FFTW_LPATH - the fftw library directory
+#  FFTW_IPATH   - the fftw include directory
+#  FFTW_LPATH   - the fftw library directory
+#  FFTW_LIBRARY - the path to the library binary
 #
 # The following variables will be checked by the function
 #   FFTW_USE_STATIC_LIBS - if true, only static libraries are found
@@ -121,9 +122,9 @@ else()
 	endif()
 
 	unset(FFTW_LIBRARY_DIR)
-	unset(FFTW_LIBRARY CACHE)
 	mark_as_advanced(FFTW_IPATH)
 	mark_as_advanced(FFTW_LPATH)
+	mark_as_advanced(FFTW_LIBRARY)
 	mark_as_advanced(FFTW_FFTWF_LIBRARY)
 	mark_as_advanced(FFTW_FFTWL_LIBRARY)
 endif()

cmake/modules/FindFMODEx.cmake

@@ -9,6 +9,10 @@
 #   FMODEX_IPATH   - the FMOD Ex include directory
 #   FMODEX_LPATH   - the FMOD Ex library directory
 #   FMODEX_LIBS    - the FMOD Ex components found
+#   FMODEX_LIBRARY - the path to the library binary
+#
+#   FMODEX_32_LIBRARY   - the filepath of the Miles SDK 32-bit library
+#   FMOXEX_64_LIBRARY   - the filepath of the Miles SDK 64-bit library
 #
 
 if(FMODEX_LPATH AND FMODEX_IPATH)
@@ -89,8 +93,8 @@ else()
 
 	mark_as_advanced(FMODEX_IPATH)
 	mark_as_advanced(FMODEX_LPATH)
+	mark_as_advanced(FMODEX_LIBRARY)
 	mark_as_advanced(FMODEX_32_LIBRARY)
 	mark_as_advanced(FMODEX_64_LIBRARY)
 	unset(FMODEX_LIBRARY_DIR)
-	unset(FMODEX_LIBRARY CACHE)
 endif()

cmake/modules/FindMiles.cmake

@@ -5,34 +5,42 @@
 #   find_package(Miles [REQUIRED] [QUIET])
 #
 # It sets the following variables:
-#   FOUND_RAD_MSS  - system has Radgame's Miles SDK
-#   RAD_MSS_IPATH - the Miles SDK include directory
-#   RAD_MSS_LPATH - the Miles SDK library directory
-#   RAD_MSS_LIBS  - the Miles SDK components found
+#   FOUND_RAD_MSS   - system has Radgame's Miles SDK
+#   RAD_MSS_IPATH   - the Miles SDK include directory
+#   RAD_MSS_LPATH   - the Miles SDK library directory
+#   RAD_MSS_LIBS    - the Miles SDK components found
+#   RAD_MSS_LIBRARY - the path to the library binary
+#
+#   RAD_MSS_RELEASE_LIBRARY        - the filepath of the Miles SDK release library
+#   RAD_MSS_RELWITHDEBINFO_LIBRARY - the filepath of the Miles SDK optimize debug library
+#   RAD_MSS_MINSIZE_LIBRARY        - the filepath of the Miles SDK minimum size library
+#   RAD_MSS_DEBUG_LIBRARY          - the filepath of the Miles SDK debug library
 #
 
 if(RAD_MSS_IPATH AND RAD_MSS_LPATH)
 	set(FOUND_RAD_MSS TRUE)
 	set(RAD_MSS_LIBS Mss32)
 
+
+	# Choose library
 	if(CMAKE_BUILD_TYPE MATCHES "Release" AND RAD_MSS_RELEASE_LIBRARY)
-		unset(RAD_MSS_LPATH)
-		get_filename_component(RAD_MSS_LIBRARY_DIR "${RAD_MSS_RELEASE_LIBRARY}" PATH)
-		set(RAD_MSS_LPATH "${RAD_MSS_LIBRARY_DIR}" CACHE PATH "The path to the Miles SDK library directory.")
-		unset(RAD_MSS_LIBRARY_DIR)
+		unset(RAD_MSS_LIBRARY)
+		set(RAD_MSS_LIBRARY ${RAD_MSS_RELEASE_LIBRARY} CACHE FILEPATH "The Miles SDK library file.")
 	elseif(CMAKE_BUILD_TYPE MATCHES "RelWithDebInfo" AND RAD_MSS_RELWITHDEBINFO_LIBRARY)
-		unset(RAD_MSS_LPATH)
-		get_filename_component(RAD_MSS_LIBRARY_DIR "${RAD_MSS_RELWITHDEBINFO_LIBRARY}" PATH)
-		set(RAD_MSS_LPATH "${RAD_MSS_LIBRARY_DIR}" CACHE PATH "The path to the Miles SDK library directory.")
-		unset(RAD_MSS_LIBRARY_DIR)
+		unset(RAD_MSS_LIBRARY)
+		set(RAD_MSS_LIBRARY ${RAD_MSS_RELWITHDEBINFO_LIBRARY} CACHE FILEPATH "The Miles SDK library file.")
 	elseif(CMAKE_BUILD_TYPE MATCHES "MinSizeRel" AND RAD_MSS_MINSIZE_LIBRARY)
-		unset(RAD_MSS_LPATH)
-		get_filename_component(RAD_MSS_LIBRARY_DIR "${RAD_MSS_MINSIZE_LIBRARY}" PATH)
-		set(RAD_MSS_LPATH "${RAD_MSS_LIBRARY_DIR}" CACHE PATH "The path to the Miles SDK library directory.")
-		unset(RAD_MSS_LIBRARY_DIR)
+		unset(RAD_MSS_LIBRARY)
+		set(RAD_MSS_LIBRARY ${RAD_MSS_MINSIZE_LIBRARY} CACHE FILEPATH "The Miles SDK library file.")
 	elseif(CMAKE_BUILD_TYPE MATCHES "Debug" AND RAD_MSS_DEBUG_LIBRARY)
+		unset(RAD_MSS_LIBRARY)
+		set(RAD_MSS_LIBRARY ${RAD_MSS_DEBUG_LIBRARY} CACHE FILEPATH "The Miles SDK library file.")
+	endif()
+
+	# Set library path
+	if(DEFINED RAD_MSS_LIBRARY)
 		unset(RAD_MSS_LPATH)
-		get_filename_component(RAD_MSS_LIBRARY_DIR "${RAD_MSS_DEBUG_LIBRARY}" PATH)
+		get_filename_component(RAD_MSS_LIBRARY_DIR "${RAD_MSS_LIBRARY}" PATH)
 		set(RAD_MSS_LPATH "${RAD_MSS_LIBRARY_DIR}" CACHE PATH "The path to the Miles SDK library directory.")
 		unset(RAD_MSS_LIBRARY_DIR)
 	endif()
@@ -95,7 +103,20 @@ else()
 		      "C:/Program Files (x86)/Miles6"
 		PATH_SUFFIXES "lib" "lib32"
 	)
-	get_filename_component(RAD_MSS_LIBRARY_DIR "${RAD_MSS_RELEASE_LIBRARY}" PATH)
+
+	# Choose library
+	if(CMAKE_BUILD_TYPE MATCHES "Release" AND RAD_MSS_RELEASE_LIBRARY)
+		set(RAD_MSS_LIBRARY ${RAD_MSS_RELEASE_LIBRARY} CACHE FILEPATH "The Miles SDK library file.")
+	elseif(CMAKE_BUILD_TYPE MATCHES "RelWithDebInfo" AND RAD_MSS_RELWITHDEBINFO_LIBRARY)
+		set(RAD_MSS_LIBRARY ${RAD_MSS_RELWITHDEBINFO_LIBRARY} CACHE FILEPATH "The Miles SDK library file.")
+	elseif(CMAKE_BUILD_TYPE MATCHES "MinSizeRel" AND RAD_MSS_MINSIZE_LIBRARY)
+		set(RAD_MSS_LIBRARY ${RAD_MSS_MINSIZE_LIBRARY} CACHE FILEPATH "The Miles SDK library file.")
+	elseif(CMAKE_BUILD_TYPE MATCHES "Debug" AND RAD_MSS_DEBUG_LIBRARY)
+		set(RAD_MSS_LIBRARY ${RAD_MSS_DEBUG_LIBRARY} CACHE FILEPATH "The Miles SDK library file.")
+	endif()
+
+	# Set library path
+	get_filename_component(RAD_MSS_LIBRARY_DIR "${RAD_MSS_LIBRARY}" PATH)
 	set(RAD_MSS_LPATH "${RAD_MSS_LIBRARY_DIR}" CACHE PATH "The path to the Miles SDK library directory.")
 
 	# Check if we have everything we need
@@ -107,6 +128,7 @@ else()
 	unset(RAD_MSS_LIBRARY_DIR)
 	mark_as_advanced(RAD_MSS_IPATH)
 	mark_as_advanced(RAD_MSS_LPATH)
+	mark_as_advanced(RAD_MSS_LIBRARY)
 	mark_as_advanced(RAD_MSS_DEBUG_LIBRARY)
 	mark_as_advanced(RAD_MSS_RELEASE_LIBRARY)
 	mark_as_advanced(RAD_MSS_RELWITHDEBINFO_LIBRARY)

cmake/modules/FindSquish.cmake

@@ -5,12 +5,14 @@
 #   find_package(Squish [REQUIRED] [QUIET])
 #
 # It sets the following variables:
-#   FOUND_SQUISH  - system has squish
-#   SQUISH_IPATH - the squish include directory
-#   SQUISH_LPATH - the squish library directory
+#   FOUND_SQUISH   - system has squish
+#   SQUISH_IPATH   - the squish include directory
+#   SQUISH_LPATH   - the squish library directory
+#   SQUISH_LIBS    - the squish components found
+#   SQUISH_LIBRARY - the path to the library binary
+#
 #   SQUISH_RELEASE_LIBRARY - the filepath of the squish release library
-#   SQUISH_DEBUG_LIBRARY - the filepath of the squish debug library
-#   SQUISH_LIBS  - the squish components found
+#   SQUISH_DEBUG_LIBRARY   - the filepath of the squish debug library
 #
 
 if(SQUISH_IPATH AND SQUISH_LPATH)
@@ -92,9 +94,9 @@ else()
 	endif()
 
 	unset(SQUISH_LIBRARY_DIR)
-	unset(SQUISH_LIBRARY CACHE)
 	mark_as_advanced(SQUISH_IPATH)
 	mark_as_advanced(SQUISH_LPATH)
+	mark_as_advanced(SQUISH_LIBRARY)
 	mark_as_advanced(SQUISH_RELEASE_LIBRARY)
 	mark_as_advanced(SQUISH_DEBUG_LIBRARY)
-endif()
+endif()

cmake/modules/FindTar.cmake

@@ -5,10 +5,11 @@
 #   find_package(Tar [REQUIRED] [QUIET])
 #
 # It sets the following variables:
-#   FOUND_TAR  - system has libtar
-#   TAR_IPATH - the tar include directory
-#   TAR_LPATH - the tar library directory
-#   TAR_LIBS  - the tar components found
+#   FOUND_TAR   - system has libtar
+#   TAR_IPATH   - the tar include directory
+#   TAR_LPATH   - the tar library directory
+#   TAR_LIBS    - the tar components found
+#   TAR_LIBRARY - the path to the library binary
 #
 
 if(TAR_IPATH AND TAR_LPATH)
@@ -42,7 +43,7 @@ else()
 	endif()
 
 	unset(TAR_LIBRARY_DIR)
-	unset(TAR_LIBRARY CACHE)
 	mark_as_advanced(TAR_IPATH)
 	mark_as_advanced(TAR_LPATH)
+	mark_as_advanced(TAR_LIBRARY)
 endif()

cmake/modules/FindVRPN.cmake

@@ -5,9 +5,10 @@
 #   find_package(Tar [REQUIRED] [QUIET])
 #
 # It sets the following variables:
-#   FOUND_VRPN  - system has libvrpn
-#   VRPN_IPATH - the vrpn include directory
-#   VRPN_LPATH - the vrpn library directory
+#   FOUND_VRPN   - system has libvrpn
+#   VRPN_IPATH   - the vrpn include directory
+#   VRPN_LPATH   - the vrpn library directory
+#   VRPN_LIBRARY - the path to the library binary
 #
 
 if(VRPN_IPATH AND VRPN_LPATH)
@@ -41,7 +42,7 @@ else()
 	endif()
 
 	unset(VRPN_LIBRARY_DIR)
-	unset(VRPN_LIBRARY CACHE)
 	mark_as_advanced(VRPN_IPATH)
 	mark_as_advanced(VRPN_LPATH)
+	mark_as_advanced(VRPN_LIBRARY)
 endif()

cmake/modules/MangleFreetype.cmake

@@ -20,13 +20,10 @@ if(FREETYPE_FOUND)
 	set(FREETYPE_VERSION ${FREETYPE_VERSION_STRING})
 
 	unset(FREETYPE_FOUND)
-	unset(FREETYPE_LIBRARY)
 	unset(FREETYPE_INCLUDE_DIR)
 	unset(FREETYPE_LIBRARY_DIR)
 endif()
 
-unset(FREETYPE_LIBRARY CACHE)
-unset(FREETYPE_LIBRARIES CACHE)
 unset(FREETYPE_INCLUDE_DIRS CACHE)
 unset(FREETYPE_INCLUDE_DIR_ft2build CACHE)
-unset(FREETYPE_INCLUDE_DIR_freetype2 CACHE)
+unset(FREETYPE_INCLUDE_DIR_freetype2 CACHE)

cmake/modules/MangleGTK2.cmake

@@ -18,6 +18,8 @@ if(GTK2_FOUND)
 	mark_as_advanced(GTK_IPATH)
 	mark_as_advanced(GTK_LPATH)
 
+	set(GTK_LIBRARIES GTK2_LIBRARIES)
+
 	unset(GTK2_FOUND)
 	unset(GTK2_LIBRARY)
 	unset(GTK2_INCLUDE_DIR)

cmake/modules/MangleJPEG.cmake

@@ -17,11 +17,7 @@ if(JPEG_FOUND)
 	mark_as_advanced(JPEG_LPATH)
 
 	unset(JPEG_FOUND)
-	unset(JPEG_LIBRARY CACHE)
-	unset(JPEG_LIBRARIES)
-	unset(JPEG_INCLUDE_DIR CACHE)
 	unset(JPEG_LIBRARY_DIR)
-else()
-	unset(JPEG_LIBRARY CACHE)
-	unset(JPEG_INCLUDE_DIR CACHE)
 endif()
+
+unset(JPEG_INCLUDE_DIR CACHE)

cmake/modules/MangleOpenAL.cmake

@@ -26,5 +26,4 @@ if(OPENAL_FOUND)
 	unset(OPENAL_LIBRARY_DIR)
 endif()
 
-unset(OPENAL_LIBRARY CACHE)
 unset(OPENAL_INCLUDE_DIR CACHE)

cmake/modules/MangleOpenSSL.cmake

@@ -19,10 +19,7 @@ if(OPENSSL_FOUND)
 	mark_as_advanced(OPENSSL_LPATH)
 
 	unset(OPENSSL_FOUND)
-	unset(OPENSSL_LIBRARY)
-	unset(OPENSSL_LIBRARIES)
-	unset(OPENSSL_INCLUDE_DIR CACHE)
 	unset(OPENSSL_LIBRARY_DIR)
-else()
-	unset(OPENSSL_INCLUDE_DIR CACHE)
 endif()
+
+unset(OPENSSL_INCLUDE_DIR CACHE)

cmake/modules/ManglePNG.cmake

@@ -19,15 +19,10 @@ if(PNG_FOUND)
 	set(PNG_VERSION ${PNG_VERSION_STRING})
 
 	unset(PNG_FOUND)
-	unset(PNG_LIBRARY CACHE)
-	unset(PNG_LIBRARIES)
 	unset(PNG_DEFINITIONS)
-	unset(PNG_INCLUDE_DIR CACHE)
-	unset(PNG_PNG_INCLUDE_DIR CACHE)
 	unset(PNG_LIBRARY_DIR)
 	unset(PNG_VERSION_STRING)
-else()
-	unset(PNG_LIBRARY CACHE)
-	unset(PNG_INCLUDE_DIR CACHE)
-	unset(PNG_PNG_INCLUDE_DIR CACHE)
 endif()
+
+unset(PNG_INCLUDE_DIR CACHE)
+unset(PNG_PNG_INCLUDE_DIR CACHE)

cmake/modules/MangleTIFF.cmake

@@ -19,11 +19,7 @@ if(TIFF_FOUND)
 	set(TIFF_VERSION ${TIFF_VERSION_STRING})
 
 	unset(TIFF_FOUND)
-	unset(TIFF_LIBRARY CACHE)
-	unset(TIFF_LIBRARIES)
-	unset(TIFF_INCLUDE_DIR CACHE)
 	unset(TIFF_LIBRARY_DIR)
-else()
-	unset(TIFF_INCLUDE_DIR CACHE)
-	unset(TIFF_LIBRARY CACHE)
 endif()
+
+unset(TIFF_INCLUDE_DIR CACHE)

cmake/modules/MangleZLIB.cmake

@@ -31,7 +31,5 @@ if(ZLIB_FOUND)
 	unset(ZLIB_OATCH_VERSION)
 endif()
 
-unset(ZLIB_LIBRARY CACHE)
-unset(ZLIB_LIBRARIES CACHE)
 unset(ZLIB_INCLUDE_DIR CACHE)
 unset(ZLIB_INCLUDE_DIRS CACHE)

dtool/CMakeLists.txt

@@ -28,13 +28,10 @@ endif()
 string(REPLACE "." "," P3D_PLUGIN_DLL_COMMA_VERSION "${P3D_PLUGIN_DLL_DOT_VERSION}")
 
 
-## Installation Config ##
+## Dtool Config ##
 set(INSTALL_DIR "/usr/local/panda" CACHE STRING "The directory in which to install Panda3D.")
-
 set(DTOOL_INSTALL "${INSTALL_DIR}" CACHE STRING "The directory in which to install the dtool package.")
 
-set(DEFAULT_PRC_DIR "${INSTALL_DIR}/etc" CACHE STRING "Panda uses prc files for runtime configuration. Panda will search the default .prc directory if the PRC_PATH and PRC_DIR environment variables are not defined.")
-
 include(Configure.cmake)
 
 ## Include dtool subpackages ##

dtool/Configure.cmake

@@ -136,7 +136,7 @@ mangle_package(GTK2)
 config_package(GTK COMMENT "gtk+-2")
 
 # Find and configure Freetype
-find_package(Freetype)
+find_package(Freetype QUIET)
 mangle_package(Freetype)
 config_package(FREETYPE COMMENT "Freetype")
 if(HAVE_FREETYPE AND NOT WIN32)
@@ -246,7 +246,7 @@ endif()
 # Find and configure libRocket
 #find_package(Rocket)
 #config_package(ROCKET COMMENT "libRocket")
-#if(HAVE_ROCKET)
+#if(HAVE_ROCKET AND HAVE_PYTHON)
 #	# Check for rocket python bindings
 #	if(FOUND_ROCKET_PYTHON)
 #		option(USE_ROCKET_PYTHON "If on, compile Panda3D with python bindings for libRocket" ON)
@@ -261,6 +261,8 @@ endif()
 #	else()
 #		message(STATUS "+ libRocket without Python bindings")
 #	endif()
+#else()
+#	unset(USE_ROCKET_PYTHON CACHE)
 #endif()
 
 # Find and configure Bullet

dtool/src/cppparser/CMakeLists.txt

@@ -15,7 +15,8 @@ set(P3CPPPARSER_HEADERS
 	cppSimpleType.h cppStructType.h cppTBDType.h
 	cppTemplateParameterList.h cppTemplateScope.h cppToken.h
 	cppType.h cppTypeDeclaration.h cppTypeParser.h
-	cppTypeProxy.h cppTypedef.h cppUsing.h cppVisibility.h)
+	cppTypeProxy.h cppTypedef.h cppUsing.h cppVisibility.h
+)
 
 set(P3CPPPARSER_SOURCES
 	cppArrayType.cxx ${CMAKE_CURRENT_BINARY_DIR}/cppBison.cxx
@@ -33,17 +34,30 @@ set(P3CPPPARSER_SOURCES
 	cppTemplateParameterList.cxx cppTemplateScope.cxx
 	cppToken.cxx cppType.cxx cppTypeDeclaration.cxx
 	cppTypeParser.cxx cppTypeProxy.cxx cppTypedef.cxx
-	cppUsing.cxx cppVisibility.cxx)
+	cppUsing.cxx cppVisibility.cxx
+)
+
+# Bison is required for CPPParser
+# Check for it here, so that cppparser can be compiled individually
+if(NOT HAVE_BISON)
+	find_package(BISON REQUIRED QUIET)
+
+	if(NOT BISON_FOUND)
+		message(FATAL_ERROR "CPPParser requires Bison.")
+	endif()
+endif()
 
-find_package(BISON)
 bison_target(cppParser
 	cppBison.yxx
 	${CMAKE_CURRENT_BINARY_DIR}/cppBison.cxx
-	COMPILE_FLAGS --defines=${CMAKE_CURRENT_BINARY_DIR}/cppBison.h)
+	COMPILE_FLAGS --defines=${CMAKE_CURRENT_BINARY_DIR}/cppBison.h
+)
+
 include_directories(${CMAKE_CURRENT_BINARY_DIR})
 include_directories(${CMAKE_CURRENT_LIST_DIR})
 
 add_library(p3cppParser STATIC
 	${P3CPPPARSER_HEADERS}
-	${P3CPPPARSER_SOURCES})
+	${P3CPPPARSER_SOURCES}
+)
 add_dependencies(p3cppParser cppParser)

dtool/src/interrogate/CMakeLists.txt

@@ -6,8 +6,19 @@ include_directories(../dtoolbase)
 include_directories(../pystub)
 include_directories(../prc)
 
-find_package(OpenSSL REQUIRED)
-include_directories(${OPENSSL_INCLUDE_DIR})
+# OpenSSL is required for Interrogate
+# Check for it here, so that Interrogate can be compiled individually
+if(HAVE_OPENSSL)
+	include_directories(OPENSSL_IPATH)
+else()
+	find_package(OpenSSL REQUIRED QUIET)
+
+	if(NOT OPENSSL_FOUND)
+		message(FATAL_ERROR "Interrogate requires OpenSSL.")
+	endif()
+
+	include_directories(${OPENSSL_INCLUDE_DIR})
+endif()
 
 set(INTERROGATE_HEADERS
 	functionRemap.h

dtool/src/prc/CMakeLists.txt

@@ -1,6 +1,7 @@
 include_directories(../dtoolutil)
 include_directories(../dtoolbase)
 
+set(DEFAULT_PRC_DIR "${INSTALL_DIR}/etc" CACHE STRING "Panda uses prc files for runtime configuration. Panda will search the default .prc directory if the PRC_PATH and PRC_DIR environment variables are not defined.")
 set(PRC_DCONFIG_TRUST_LEVEL 0 CACHE STRING "The trust level value for any legacy (DConfig) variables.")
 set(PRC_INC_TRUST_LEVEL 0 CACHE STRING "The amount by which we globally increment the trust level.")