# PhysicsFS; a portable, flexible file i/o abstraction.

# Copyright (C) 2007  Ryan C. Gordon.

#

# Please see the file LICENSE.txt in the source's root directory.

CMAKE_MINIMUM_REQUIRED(VERSION 2.4)

PROJECT(PhysicsFS)

SET(PHYSFS_VERSION 2.0.0)

# Increment this if/when we break backwards compatibility.

SET(PHYSFS_SOVERSION 1)

# I hate that they define "WIN32" ... we're about to move to Win64...I hope!

IF(WIN32 AND NOT WINDOWS)

    SET(WINDOWS TRUE)

ENDIF(WIN32 AND NOT WINDOWS)

# Bleh, let's do it for "APPLE" too.

IF(APPLE AND NOT MACOSX)

    SET(MACOSX TRUE)

ENDIF(APPLE AND NOT MACOSX)

# And this might be wrong...

IF (CMAKE_SYSTEM MATCHES OS2)

    SET(OS2 TRUE)

ENDIF (CMAKE_SYSTEM MATCHES OS2)

IF(CMAKE_SYSTEM_NAME STREQUAL "SunOS")

    SET(SOLARIS TRUE)

ENDIF(CMAKE_SYSTEM_NAME STREQUAL "SunOS")

INCLUDE(CheckIncludeFile)

INCLUDE(CheckLibraryExists)

INCLUDE(CheckCSourceCompiles)

INCLUDE_DIRECTORIES(./src)

IF(MACOSX)

    # Fallback to older OS X on PowerPC to support wider range of systems...

    IF(CMAKE_OSX_ARCHITECTURES MATCHES ppc)

        ADD_DEFINITIONS(-DMAC_OS_X_VERSION_MIN_REQUIRED=1020)

        SET(OTHER_LDFLAGS ${OTHER_LDFLAGS} " -mmacosx-version-min=10.2")

    ENDIF(CMAKE_OSX_ARCHITECTURES MATCHES ppc)

    # Need these everywhere...

    ADD_DEFINITIONS(-fno-common)

    SET(OTHER_LDFLAGS ${OTHER_LDFLAGS} " -framework Carbon -framework IOKit")

ENDIF(MACOSX)

# Add some gcc-specific command lines.

IF(CMAKE_COMPILER_IS_GNUCC)

    # Always build with debug symbols...you can strip it later.

    ADD_DEFINITIONS(-g -pipe -Werror -fsigned-char)

    # Stupid BeOS generates warnings in the system headers.

    IF(NOT BEOS)

        ADD_DEFINITIONS(-Wall)

    ENDIF(NOT BEOS)

    CHECK_C_SOURCE_COMPILES("

        #if ((defined(__GNUC__)) && (__GNUC__ >= 4))

        int main(int argc, char **argv) { int is_gcc4 = 1; return 0; }

        #else

        #error This is not gcc4.

        #endif

    " PHYSFS_IS_GCC4)

    IF(PHYSFS_IS_GCC4)

        # Not supported on several operating systems at this time.

        IF(NOT OS2 AND NOT SOLARIS AND NOT WINDOWS) 

            ADD_DEFINITIONS(-fvisibility=hidden)

        ENDIF(NOT OS2 AND NOT SOLARIS AND NOT WINDOWS)

    ENDIF(PHYSFS_IS_GCC4)

    # Don't use -rpath.

    SET(CMAKE_SKIP_RPATH ON CACHE BOOL "Skip RPATH" FORCE)

ENDIF(CMAKE_COMPILER_IS_GNUCC)

IF(CMAKE_C_COMPILER_ID STREQUAL "SunPro")

    ADD_DEFINITIONS(-erroff=E_EMPTY_TRANSLATION_UNIT)

    ADD_DEFINITIONS(-xldscope=hidden)

ENDIF(CMAKE_C_COMPILER_ID STREQUAL "SunPro")

IF(MSVC)

    # VS.NET 8.0 got really really anal about strcpy, etc, which even if we

    #  cleaned up our code, zlib, etc still use...so disable the warning.

    ADD_DEFINITIONS(-D_CRT_SECURE_NO_WARNINGS=1)

ENDIF(MSVC)

# Basic chunks of source code ...

SET(ZLIB_SRCS

    src/zlib123/adler32.c

    src/zlib123/compress.c

    src/zlib123/crc32.c

    src/zlib123/deflate.c

    src/zlib123/gzio.c

    src/zlib123/infback.c

    src/zlib123/inffast.c

    src/zlib123/inflate.c

    src/zlib123/inftrees.c

    src/zlib123/trees.c

    src/zlib123/uncompr.c

    src/zlib123/zutil.c

)

SET(LZMA_SRCS

    src/lzma/C/7zCrc.c

    src/lzma/C/Archive/7z/7zBuffer.c

    src/lzma/C/Archive/7z/7zDecode.c

    src/lzma/C/Archive/7z/7zExtract.c

    src/lzma/C/Archive/7z/7zHeader.c

    src/lzma/C/Archive/7z/7zIn.c

    src/lzma/C/Archive/7z/7zItem.c

    src/lzma/C/Archive/7z/7zMethodID.c

    src/lzma/C/Compress/Branch/BranchX86.c

    src/lzma/C/Compress/Branch/BranchX86_2.c

    src/lzma/C/Compress/Lzma/LzmaDecode.c

)

IF(BEOS)

    # We add this explicitly, since we don't want CMake to think this

    #  is a C++ project unless we're on BeOS.

    SET(PHYSFS_BEOS_SRCS src/platform_beos.cpp)

    SET(OPTIONAL_LIBRARY_LIBS ${OPTIONAL_LIBRARY_LIBS} be root)

ENDIF(BEOS)

# Almost everything is "compiled" here, but things that don't apply to the

#  build are #ifdef'd out. This is to make it easy to embed PhysicsFS into

#  another project or bring up a new build system: just compile all the source

#  code and #define the things you want.

SET(PHYSFS_SRCS

    src/physfs.c

    src/physfs_byteorder.c

    src/physfs_unicode.c

    src/platform_os2.c

    src/platform_pocketpc.c

    src/platform_posix.c

    src/platform_unix.c

    src/platform_macosx.c

    src/platform_windows.c

    src/archiver_dir.c

    src/archiver_grp.c

    src/archiver_hog.c

    src/archiver_lzma.c

    src/archiver_mvl.c

    src/archiver_qpak.c

    src/archiver_wad.c

    src/archiver_zip.c

    src/archiver_iso9660.c

    ${PHYSFS_BEOS_SRCS}

)

# platform layers ...

IF(UNIX)

    IF(BEOS)

        SET(PHYSFS_HAVE_CDROM_SUPPORT TRUE)

        SET(PHYSFS_HAVE_THREAD_SUPPORT TRUE)

        SET(HAVE_PTHREAD_H TRUE)

    ELSE(BEOS)

        # !!! FIXME

        #  AC_DEFINE([PHYSFS_HAVE_LLSEEK], 1, [define if we have llseek])

        CHECK_INCLUDE_FILE(sys/ucred.h HAVE_UCRED_H)

        IF(HAVE_UCRED_H)

            ADD_DEFINITIONS(-DPHYSFS_HAVE_SYS_UCRED_H=1)

            SET(PHYSFS_HAVE_CDROM_SUPPORT TRUE)

        ENDIF(HAVE_UCRED_H)

        CHECK_INCLUDE_FILE(mntent.h HAVE_MNTENT_H)

        IF(HAVE_MNTENT_H)

            ADD_DEFINITIONS(-DPHYSFS_HAVE_MNTENT_H=1)

            SET(PHYSFS_HAVE_CDROM_SUPPORT TRUE)

        ENDIF(HAVE_MNTENT_H)

        # !!! FIXME: Solaris fails this, because mnttab.h implicitly

        # !!! FIXME:  depends on other system headers.  :(

        #CHECK_INCLUDE_FILE(sys/mnttab.h HAVE_SYS_MNTTAB_H)

        CHECK_C_SOURCE_COMPILES("

            #include <stdio.h>

            #include <sys/mnttab.h>

            int main(int argc, char **argv) { return 0; }

        " HAVE_SYS_MNTTAB_H)

        IF(HAVE_SYS_MNTTAB_H)

            ADD_DEFINITIONS(-DPHYSFS_HAVE_SYS_MNTTAB_H=1)

            SET(PHYSFS_HAVE_CDROM_SUPPORT TRUE)

        ENDIF(HAVE_SYS_MNTTAB_H)

        CHECK_INCLUDE_FILE(pthread.h HAVE_PTHREAD_H)

        IF(HAVE_PTHREAD_H)

            SET(PHYSFS_HAVE_THREAD_SUPPORT TRUE)

        ENDIF(HAVE_PTHREAD_H)

    ENDIF(BEOS)

ENDIF(UNIX)

IF(WINDOWS OR OS2)

    SET(PHYSFS_HAVE_CDROM_SUPPORT TRUE)

    SET(PHYSFS_HAVE_THREAD_SUPPORT TRUE)

ENDIF(WINDOWS OR OS2)

IF(NOT PHYSFS_HAVE_CDROM_SUPPORT)

    ADD_DEFINITIONS(-DPHYSFS_NO_CDROM_SUPPORT=1)

    MESSAGE(WARNING " ***")

    MESSAGE(WARNING " *** There is no CD-ROM support in this build!")

    MESSAGE(WARNING " *** PhysicsFS will just pretend there are no discs.")

    MESSAGE(WARNING " *** This may be fine, depending on how PhysicsFS is used,")

    MESSAGE(WARNING " ***   but is this what you REALLY wanted?")

    MESSAGE(WARNING " *** (Maybe fix CMakeLists.txt, or write a platform driver?)")

    MESSAGE(WARNING " ***")

ENDIF(NOT PHYSFS_HAVE_CDROM_SUPPORT)

IF(PHYSFS_HAVE_THREAD_SUPPORT)

    ADD_DEFINITIONS(-D_REENTRANT -D_THREAD_SAFE)

ELSE(PHYSFS_HAVE_THREAD_SUPPORT)

    ADD_DEFINITIONS(-DPHYSFS_NO_THREAD_SUPPORT=1)

    MESSAGE(WARNING " ***")

    MESSAGE(WARNING " *** There is no thread support in this build!")

    MESSAGE(WARNING " *** PhysicsFS will NOT be reentrant!")

    MESSAGE(WARNING " *** This may be fine, depending on how PhysicsFS is used,")

    MESSAGE(WARNING " ***   but is this what you REALLY wanted?")

    MESSAGE(WARNING " *** (Maybe fix CMakeLists.txt, or write a platform driver?)")

    MESSAGE(WARNING " ***")

ENDIF(PHYSFS_HAVE_THREAD_SUPPORT)

CHECK_INCLUDE_FILE(assert.h HAVE_ASSERT_H)

IF(HAVE_ASSERT_H)

    ADD_DEFINITIONS(-DHAVE_ASSERT_H=1)

ENDIF(HAVE_ASSERT_H)

# Archivers ...

OPTION(PHYSFS_ARCHIVE_ZIP "Enable ZIP support" TRUE)

IF(PHYSFS_ARCHIVE_ZIP)

    ADD_DEFINITIONS(-DPHYSFS_SUPPORTS_ZIP=1)

    SET(PHYSFS_NEED_ZLIB TRUE)

ENDIF(PHYSFS_ARCHIVE_ZIP)

OPTION(PHYSFS_ARCHIVE_7Z "Enable 7zip support" TRUE)

IF(PHYSFS_ARCHIVE_7Z)

    ADD_DEFINITIONS(-DPHYSFS_SUPPORTS_7Z=1)

    # !!! FIXME: rename to 7z.c?

    SET(PHYSFS_SRCS ${PHYSFS_SRCS} ${LZMA_SRCS})

ENDIF(PHYSFS_ARCHIVE_7Z)

OPTION(PHYSFS_ARCHIVE_GRP "Enable Build Engine GRP support" TRUE)

IF(PHYSFS_ARCHIVE_GRP)

    ADD_DEFINITIONS(-DPHYSFS_SUPPORTS_GRP=1)

ENDIF(PHYSFS_ARCHIVE_GRP)

OPTION(PHYSFS_ARCHIVE_WAD "Enable Doom WAD support" TRUE)

IF(PHYSFS_ARCHIVE_WAD)

    ADD_DEFINITIONS(-DPHYSFS_SUPPORTS_WAD=1)

ENDIF(PHYSFS_ARCHIVE_WAD)

OPTION(PHYSFS_ARCHIVE_HOG "Enable Descent I/II HOG support" TRUE)

IF(PHYSFS_ARCHIVE_HOG)

    ADD_DEFINITIONS(-DPHYSFS_SUPPORTS_HOG=1)

ENDIF(PHYSFS_ARCHIVE_HOG)

OPTION(PHYSFS_ARCHIVE_MVL "Enable Descent I/II MVL support" TRUE)

IF(PHYSFS_ARCHIVE_MVL)

    ADD_DEFINITIONS(-DPHYSFS_SUPPORTS_MVL=1)

ENDIF(PHYSFS_ARCHIVE_MVL)

OPTION(PHYSFS_ARCHIVE_QPAK "Enable Quake I/II QPAK support" TRUE)

IF(PHYSFS_ARCHIVE_QPAK)

    ADD_DEFINITIONS(-DPHYSFS_SUPPORTS_QPAK=1)

ENDIF(PHYSFS_ARCHIVE_QPAK)

OPTION(PHYSFS_ARCHIVE_ISO9660 "Enable ISO9660 support" TRUE)

IF(PHYSFS_ARCHIVE_ISO9660)

    ADD_DEFINITIONS(-DPHYSFS_SUPPORTS_ISO9660=1)

ENDIF(PHYSFS_ARCHIVE_ISO9660)

# See if some archiver required zlib, and see about using system version.

IF(PHYSFS_NEED_ZLIB)

    FIND_PACKAGE(ZLIB)

    IF(ZLIB_FOUND)

        OPTION(PHYSFS_INTERNAL_ZLIB "Link own zlib instead of system library" FALSE)

    ELSE(HAVE_SYSTEM_ZLIB)

        SET(PHYSFS_INTERNAL_ZLIB TRUE)

    ENDIF(ZLIB_FOUND)

    IF(PHYSFS_INTERNAL_ZLIB)

        INCLUDE_DIRECTORIES(zlib123)

        ADD_DEFINITIONS(-DZ_PREFIX=1)

        SET(PHYSFS_SRCS ${PHYSFS_SRCS} ${ZLIB_SRCS})

    ELSE(PHYSFS_INTERNAL_ZLIB)

        SET(OPTIONAL_LIBRARY_LIBS ${OPTIONAL_LIBRARY_LIBS} ${ZLIB_LIBRARY})

        INCLUDE_DIRECTORIES(${ZLIB_INCLUDE_DIR})

    ENDIF(PHYSFS_INTERNAL_ZLIB)

ENDIF(PHYSFS_NEED_ZLIB)

OPTION(PHYSFS_BUILD_STATIC "Build static library" TRUE)

IF(PHYSFS_BUILD_STATIC)

    ADD_LIBRARY(physfs-static STATIC ${PHYSFS_SRCS})

    SET_TARGET_PROPERTIES(physfs-static PROPERTIES OUTPUT_NAME "physfs")

    SET(PHYSFS_LIB_TARGET physfs-static)

    SET(PHYSFS_INSTALL_TARGETS ${PHYSFS_INSTALL_TARGETS} ";physfs-static")

ENDIF(PHYSFS_BUILD_STATIC)

OPTION(PHYSFS_BUILD_SHARED "Build shared library" TRUE)

IF(PHYSFS_BUILD_SHARED)

    ADD_LIBRARY(physfs SHARED ${PHYSFS_SRCS})

    SET_TARGET_PROPERTIES(physfs PROPERTIES VERSION ${PHYSFS_VERSION})

    SET_TARGET_PROPERTIES(physfs PROPERTIES SOVERSION ${PHYSFS_SOVERSION})

    TARGET_LINK_LIBRARIES(physfs ${OPTIONAL_LIBRARY_LIBS} ${OTHER_LDFLAGS})

    SET(PHYSFS_LIB_TARGET physfs)

    SET(PHYSFS_INSTALL_TARGETS ${PHYSFS_INSTALL_TARGETS} ";physfs")

ENDIF(PHYSFS_BUILD_SHARED)

IF(NOT PHYSFS_BUILD_SHARED AND NOT PHYSFS_BUILD_STATIC)

    MESSAGE(FATAL "Both shared and static libraries are disabled!")

ENDIF(NOT PHYSFS_BUILD_SHARED AND NOT PHYSFS_BUILD_STATIC)

# CMake FAQ says I need this...

IF(PHYSFS_BUILD_SHARED AND PHYSFS_BUILD_STATIC)

    SET_TARGET_PROPERTIES(physfs PROPERTIES CLEAN_DIRECT_OUTPUT 1)

    SET_TARGET_PROPERTIES(physfs-static PROPERTIES CLEAN_DIRECT_OUTPUT 1)

ENDIF(PHYSFS_BUILD_SHARED AND PHYSFS_BUILD_STATIC)

OPTION(PHYSFS_BUILD_TEST "Build stdio test program." TRUE)

MARK_AS_ADVANCED(PHYSFS_BUILD_TEST)

IF(PHYSFS_BUILD_TEST)

    FIND_PATH(READLINE_H readline/readline.h)

    FIND_PATH(HISTORY_H readline/history.h)

    IF(READLINE_H AND HISTORY_H)

        SET(CMAKE_REQUIRED_LIBRARIES curses)

        FIND_LIBRARY(READLINE_LIBRARY readline)

        FIND_LIBRARY(HISTORY_LIBRARY history)

        IF(READLINE_LIBRARY AND HISTORY_LIBRARY)

            SET(HAVE_SYSTEM_READLINE TRUE)

            SET(TEST_PHYSFS_LIBS ${TEST_PHYSFS_LIBS} ${READLINE_LIBRARY} ${CURSES_LIBRARY})

            INCLUDE_DIRECTORIES(${READLINE_H} ${HISTORY_H})

            ADD_DEFINITIONS(-DPHYSFS_HAVE_READLINE=1)

        ENDIF(READLINE_LIBRARY AND HISTORY_LIBRARY)

    ENDIF(READLINE_H AND HISTORY_H)

    ADD_EXECUTABLE(test_physfs test/test_physfs.c)

    TARGET_LINK_LIBRARIES(test_physfs ${PHYSFS_LIB_TARGET} ${TEST_PHYSFS_LIBS} ${OTHER_LDFLAGS})

    SET(PHYSFS_INSTALL_TARGETS ${PHYSFS_INSTALL_TARGETS} ";test_physfs")

ENDIF(PHYSFS_BUILD_TEST)

OPTION(PHYSFS_BUILD_WX_TEST "Build wxWidgets test program." TRUE)

MARK_AS_ADVANCED(PHYSFS_BUILD_WX_TEST)

IF(PHYSFS_BUILD_WX_TEST)

    SET(wxWidgets_USE_LIBS base core adv)

    SET(wxWidgets_INCLUDE_DIRS_NO_SYSTEM 1)

    FIND_PACKAGE(wxWidgets)

    IF(wxWidgets_FOUND)

        INCLUDE(${wxWidgets_USE_FILE})

        ADD_EXECUTABLE(wxtest_physfs test/wxtest_physfs.cpp)

        SET_SOURCE_FILES_PROPERTIES(test/wxtest_physfs.cpp PROPERTIES COMPILE_FLAGS "${wxWidgets_CXX_FLAGS}")

        TARGET_LINK_LIBRARIES(wxtest_physfs ${PHYSFS_LIB_TARGET} ${wxWidgets_LIBRARIES} ${OTHER_LDFLAGS})

        SET(PHYSFS_INSTALL_TARGETS ${PHYSFS_INSTALL_TARGETS} ";wxtest_physfs")

    ELSE(wxWidgets_FOUND)

        MESSAGE(STATUS "wxWidgets not found. Disabling wx test app.")

        SET(PHYSFS_BUILD_WX_TEST FALSE)

    ENDIF(wxWidgets_FOUND)

ENDIF(PHYSFS_BUILD_WX_TEST)

# Scripting language bindings...

#CMake's SWIG support is basically useless.

#FIND_PACKAGE(SWIG)

FIND_PROGRAM(SWIG swig DOC "Path to swig command line app: http://swig.org/")

IF(NOT SWIG)

    MESSAGE(STATUS "SWIG not found. You won't be able to build scripting language bindings.")

ELSE(NOT SWIG)

    MARK_AS_ADVANCED(SWIG)

    IF(DEFINED CMAKE_BUILD_TYPE)

        IF((NOT CMAKE_BUILD_TYPE STREQUAL "") AND (NOT CMAKE_BUILD_TYPE STREQUAL "Debug"))

            IF(CMAKE_BUILD_TYPE STREQUAL "MinSizeRel")

                SET(SWIG_OPT_CFLAGS "-small")

            ELSE(CMAKE_BUILD_TYPE STREQUAL "MinSizeRel")

                SET(SWIG_OPT_CFLAGS "-O")

            ENDIF(CMAKE_BUILD_TYPE STREQUAL "MinSizeRel")

        ENDIF((NOT CMAKE_BUILD_TYPE STREQUAL "") AND (NOT CMAKE_BUILD_TYPE STREQUAL "Debug"))

    ENDIF(DEFINED CMAKE_BUILD_TYPE)

    SET(SWIG_OUTPUT_DIR "${CMAKE_CURRENT_BINARY_DIR}/physfs-swig-bindings")

    MACRO(CONFIGURE_SWIG_BINDING _LANG _INSTALLPATH _EXTRAOUTPUTS _EXTRACFLAGS _EXTRALDFLAGS)

        STRING(TOUPPER "${_LANG}" _UPPERLANG)

        STRING(TOLOWER "${_LANG}" _LOWERLANG)

        SET(_TARGET "physfs-${_LOWERLANG}")

        SET(_TARGETDIR "${SWIG_OUTPUT_DIR}/${_LOWERLANG}")

        IF(NOT EXISTS "${_TARGETDIR}")

            FILE(MAKE_DIRECTORY "${_TARGETDIR}")

        ENDIF(NOT EXISTS "${_TARGETDIR}")

        IF(PHYSFS_BUILD_${_UPPERLANG})

            ADD_CUSTOM_COMMAND(

                OUTPUT "${_TARGETDIR}/${_TARGET}.c" ${_EXTRAOUTPUTS}

                MAIN_DEPENDENCY "${CMAKE_CURRENT_SOURCE_DIR}/extras/physfs-swig.i"

                COMMAND "${SWIG}"

                ARGS ${SWIG_OPT_CFLAGS} -${_LOWERLANG} -outdir "${_TARGETDIR}" -o "${_TARGETDIR}/${_TARGET}.c" "${CMAKE_CURRENT_SOURCE_DIR}/extras/physfs-swig.i"

                COMMENT "Generating ${_LANG} bindings..."

            )

            ADD_LIBRARY(${_TARGET} SHARED "${_TARGETDIR}/${_TARGET}.c")

            TARGET_LINK_LIBRARIES(${_TARGET} ${PHYSFS_LIB_TARGET})

            SET_TARGET_PROPERTIES(${_TARGET} PROPERTIES

                COMPILE_FLAGS "${_EXTRACFLAGS}"

                LINK_FLAGS "${_EXTRALDFLAGS}"

                LIBRARY_OUTPUT_NAME "physfs"

                LIBRARY_OUTPUT_DIRECTORY "${_TARGETDIR}"

                CLEAN_DIRECT_OUTPUT 1

            )

            INSTALL(TARGETS ${_TARGET} LIBRARY DESTINATION "${_INSTALLPATH}")

            MESSAGE(STATUS "${_LANG} bindings configured!")

        ELSE(PHYSFS_BUILD_${_UPPERLANG})

            MESSAGE(STATUS "Couldn't figure out ${_LANG} configuration. Skipping ${_LANG} bindings.")

        ENDIF(PHYSFS_BUILD_${_UPPERLANG})

    ENDMACRO(CONFIGURE_SWIG_BINDING)

    MACRO(ADD_SCRIPT_BINDING_OPTION _VAR _LANG _DEFVAL)

        OPTION(${_VAR} "Build ${_LANG} bindings." ${_DEFVAL})

        MARK_AS_ADVANCED(${_VAR})

    ENDMACRO(ADD_SCRIPT_BINDING_OPTION)

    ADD_SCRIPT_BINDING_OPTION(PHYSFS_BUILD_PERL "Perl" TRUE)

    ADD_SCRIPT_BINDING_OPTION(PHYSFS_BUILD_RUBY "Ruby" TRUE)

ENDIF(NOT SWIG)

IF(PHYSFS_BUILD_PERL)

    MESSAGE(STATUS "Configuring Perl bindings...")

    FIND_PROGRAM(PERL perl DOC "Path to perl command line app: http://perl.org/")

    IF(NOT PERL)

        MESSAGE(STATUS "Perl not found. You won't be able to build perl bindings.")

        SET(PHYSFS_BUILD_PERL FALSE)

    ENDIF(NOT PERL)

    MARK_AS_ADVANCED(PERL)

    MACRO(GET_PERL_CONFIG _KEY _VALUE)

        IF(PHYSFS_BUILD_PERL)

            MESSAGE(STATUS "Figuring out perl config value '${_KEY}' ...")

            EXECUTE_PROCESS(

                COMMAND ${PERL} -w -e "use Config; print \$Config{${_KEY}};"

                RESULT_VARIABLE GET_PERL_CONFIG_RC

                OUTPUT_VARIABLE ${_VALUE}

            )

            IF(NOT GET_PERL_CONFIG_RC EQUAL 0)

                MESSAGE(STATUS "Perl executable ('${PERL}') reported failure: ${GET_PERL_CONFIG_RC}")

                SET(PHYSFS_BUILD_PERL FALSE)

            ENDIF(NOT GET_PERL_CONFIG_RC EQUAL 0)

            IF(NOT ${_VALUE})

                MESSAGE(STATUS "Perl executable ('${PERL}') didn't have a value for '${_KEY}'")

                SET(PHYSFS_BUILD_PERL FALSE)

            ENDIF(NOT ${_VALUE})

            IF(PHYSFS_BUILD_PERL)

                MESSAGE(STATUS "Perl says: '${${_VALUE}}'.")

            ENDIF(PHYSFS_BUILD_PERL)

        ENDIF(PHYSFS_BUILD_PERL)

    ENDMACRO(GET_PERL_CONFIG)

    # !!! FIXME: installsitearch might be the wrong location.

    GET_PERL_CONFIG("archlibexp" PERL_INCLUDE_PATH)

    GET_PERL_CONFIG("ccflags" PERL_CCFLAGS)

    GET_PERL_CONFIG("ldflags" PERL_LDFLAGS)

    GET_PERL_CONFIG("installsitearch" PERL_INSTALL_PATH)

    # !!! FIXME: this test for Mac OS X is wrong.

    IF(MACOSX)

        GET_PERL_CONFIG("libperl" PERL_LIBPERL)

        SET(TMPLIBPERL "${PERL_LIBPERL}")

        STRING(REGEX REPLACE "^lib" "" TMPLIBPERL "${TMPLIBPERL}")

        STRING(REGEX REPLACE "\\.so$" "" TMPLIBPERL "${TMPLIBPERL}")

        STRING(REGEX REPLACE "\\.dylib$" "" TMPLIBPERL "${TMPLIBPERL}")

        STRING(REGEX REPLACE "\\.dll$" "" TMPLIBPERL "${TMPLIBPERL}")

        IF(NOT "${TMPLIBPERL}" STREQUAL "${PERL_LIBPERL}")

            MESSAGE(STATUS "Stripped '${PERL_LIBPERL}' down to '${TMPLIBPERL}'.")

            SET(PERL_LIBPERL "${TMPLIBPERL}")

        ENDIF(NOT "${TMPLIBPERL}" STREQUAL "${PERL_LIBPERL}")

        SET(PERL_LIBPERL "-l${PERL_LIBPERL}")

    ENDIF(MACOSX)

    CONFIGURE_SWIG_BINDING(Perl "${PERL_INSTALL_PATH}" "${SWIG_OUTPUT_DIR}/perl/physfs.pm" "\"-I${PERL_INCLUDE_PATH}/CORE\" ${PERL_CCFLAGS} -w" "\"-L${PERL_INCLUDE_PATH}/CORE\" ${PERL_LIBPERL} ${PERL_LDFLAGS}")

    INSTALL(FILES "${SWIG_OUTPUT_DIR}/perl/physfs.pm" DESTINATION "${PERL_INSTALL_PATH}")

    INSTALL(

        FILES test/test_physfs.pl

        DESTINATION bin

        PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE

                    GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE

    )

ENDIF(PHYSFS_BUILD_PERL)