src/hidapi/configure.ac - external/github.com/libsdl-org/SDL - Git at Google

 AC_PREREQ(2.63)

 # Version number. This is currently the only place.
 m4_define([HIDAPI_MAJOR],   0)
 m4_define([HIDAPI_MINOR],   8)
 m4_define([HIDAPI_RELEASE], 0)
 m4_define([HIDAPI_RC],      -rc1)
 m4_define([VERSION_STRING], HIDAPI_MAJOR[.]HIDAPI_MINOR[.]HIDAPI_RELEASE[]HIDAPI_RC)

 AC_INIT([hidapi],[VERSION_STRING],[alan@signal11.us])

 # Library soname version
 # Follow the following rules (particularly the ones in the second link):
 #  http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
 #  http://sourceware.org/autobook/autobook/autobook_91.html
 lt_current="0"
 lt_revision="0"
 lt_age="0"
 LTLDFLAGS="-version-info ${lt_current}:${lt_revision}:${lt_age}"

 AC_CONFIG_MACRO_DIR([m4])
 AM_INIT_AUTOMAKE([foreign -Wall -Werror])
 AC_CONFIG_MACRO_DIR([m4])

 m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
 LT_INIT

 AC_PROG_CC
 AC_PROG_CXX
 AC_PROG_OBJC
 PKG_PROG_PKG_CONFIG


 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])

 hidapi_lib_error() {
 	echo ""
 	echo "  Library $1 was not found on this system."
 	echo "  Please install it and re-run ./configure"
 	echo ""
 	exit 1
 }

 hidapi_prog_error() {
 	echo ""
 	echo "  Program $1 was not found on this system."
 	echo "  This program is part of $2."
 	echo "  Please install it and re-run ./configure"
 	echo ""
 	exit 1
 }

 AC_MSG_CHECKING([operating system])
 AC_MSG_RESULT($host)
 case $host in
 *-linux*)
 	AC_MSG_RESULT([ (Linux back-end)])
 	AC_DEFINE(OS_LINUX, 1, [Linux implementations])
 	AC_SUBST(OS_LINUX)
 	backend="linux"
 	os="linux"
 	threads="pthreads"

 	# HIDAPI/hidraw libs
 	PKG_CHECK_MODULES([libudev], [libudev], true, [hidapi_lib_error libudev])
 	LIBS_HIDRAW_PR+=" $libudev_LIBS"
 	CFLAGS_HIDRAW+=" $libudev_CFLAGS"

 	# HIDAPI/libusb libs
 	AC_CHECK_LIB([rt], [clock_gettime], [LIBS_LIBUSB_PRIVATE+=" -lrt"], [hidapi_lib_error librt])
 	PKG_CHECK_MODULES([libusb], [libusb-1.0 >= 1.0.9], true, [hidapi_lib_error libusb-1.0])
 	LIBS_LIBUSB_PRIVATE+=" $libusb_LIBS"
 	CFLAGS_LIBUSB+=" $libusb_CFLAGS"
 	;;
 *-darwin*)
 	AC_MSG_RESULT([ (Mac OS X back-end)])
 	AC_DEFINE(OS_DARWIN, 1, [Mac implementation])
 	AC_SUBST(OS_DARWIN)
 	backend="mac"
 	os="darwin"
 	threads="pthreads"
 	LIBS="${LIBS} -framework IOKit -framework CoreFoundation"
 	;;
 *-freebsd*)
 	AC_MSG_RESULT([ (FreeBSD back-end)])
 	AC_DEFINE(OS_FREEBSD, 1, [FreeBSD implementation])
 	AC_SUBST(OS_FREEBSD)
 	backend="libusb"
 	os="freebsd"
 	threads="pthreads"

 	CFLAGS="$CFLAGS -I/usr/local/include"
 	LDFLAGS="$LDFLAGS -L/usr/local/lib"
 	LIBS="${LIBS}"
 	AC_CHECK_LIB([usb], [libusb_init], [LIBS_LIBUSB_PRIVATE="${LIBS_LIBUSB_PRIVATE} -lusb"], [hidapi_lib_error libusb])
 	AC_CHECK_LIB([iconv], [iconv_open], [LIBS_LIBUSB_PRIVATE="${LIBS_LIBUSB_PRIVATE} -liconv"], [hidapi_lib_error libiconv])
 	echo libs_priv: $LIBS_LIBUSB_PRIVATE
 	;;
 *-kfreebsd*)
 	AC_MSG_RESULT([ (kFreeBSD back-end)])
 	AC_DEFINE(OS_KFREEBSD, 1, [kFreeBSD implementation])
 	AC_SUBST(OS_KFREEBSD)
 	backend="libusb"
 	os="kfreebsd"
 	threads="pthreads"

 	AC_CHECK_LIB([usb], [libusb_init], [LIBS_LIBUSB_PRIVATE="${LIBS_LIBUSB_PRIVATE} -lusb"], [hidapi_lib_error libusb])
 	echo libs_priv: $LIBS_LIBUSB_PRIVATE
 	;;
 *-mingw*)
 	AC_MSG_RESULT([ (Windows back-end, using MinGW)])
 	backend="windows"
 	os="windows"
 	threads="windows"
 	win_implementation="mingw"
 	;;
 *-cygwin*)
 	AC_MSG_RESULT([ (Windows back-end, using Cygwin)])
 	backend="windows"
 	os="windows"
 	threads="windows"
 	win_implementation="cygwin"
 	;;
 *)
 	AC_MSG_ERROR([HIDAPI is not supported on your operating system yet])
 esac

 LIBS_HIDRAW="${LIBS} ${LIBS_HIDRAW_PR}"
 LIBS_LIBUSB="${LIBS} ${LIBS_LIBUSB_PRIVATE}"
 AC_SUBST([LIBS_HIDRAW])
 AC_SUBST([LIBS_LIBUSB])
 AC_SUBST([CFLAGS_LIBUSB])
 AC_SUBST([CFLAGS_HIDRAW])

 if test "x$os" = xwindows; then
 	AC_DEFINE(OS_WINDOWS, 1, [Windows implementations])
 	AC_SUBST(OS_WINDOWS)
 	LDFLAGS="${LDFLAGS} -no-undefined"
 	LIBS="${LIBS} -lsetupapi"
 fi

 if test "x$threads" = xpthreads; then
 	AX_PTHREAD([found_pthreads=yes], [found_pthreads=no])

 	if test "x$found_pthreads" = xyes; then
 		if test "x$os" = xlinux; then
 			# Only use pthreads for libusb implementation on Linux.
 			LIBS_LIBUSB="$PTHREAD_LIBS $LIBS_LIBUSB"
 			CFLAGS_LIBUSB="$CFLAGS_LIBUSB $PTHREAD_CFLAGS"
 			# There's no separate CC on Linux for threading,
 			# so it's ok that both implementations use $PTHREAD_CC
 			CC="$PTHREAD_CC"
 		else
 			LIBS="$PTHREAD_LIBS $LIBS"
 			CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
 			CC="$PTHREAD_CC"
 		fi
 	fi
 fi

 # Test GUI
 AC_ARG_ENABLE([testgui],
 	[AS_HELP_STRING([--enable-testgui],
 		[enable building of test GUI (default n)])],
 	[testgui_enabled=$enableval],
 	[testgui_enabled='no'])
 AM_CONDITIONAL([BUILD_TESTGUI], [test "x$testgui_enabled" != "xno"])

 # Configure the MacOS TestGUI app bundle
 rm -Rf testgui/TestGUI.app
 mkdir -p testgui/TestGUI.app
 cp -R ${srcdir}/testgui/TestGUI.app.in/* testgui/TestGUI.app
 chmod -R u+w testgui/TestGUI.app
 mkdir testgui/TestGUI.app/Contents/MacOS/

 if test "x$testgui_enabled" != "xno"; then
 	if test "x$os" = xdarwin; then
 		# On Mac OS, don't use pkg-config.
 		AC_CHECK_PROG([foxconfig], [fox-config], [fox-config], false)
 		if test "x$foxconfig" = "xfalse"; then
 			hidapi_prog_error fox-config "FOX Toolkit"
 		fi
 		LIBS_TESTGUI+=`$foxconfig --libs`
 		LIBS_TESTGUI+=" -framework Cocoa -L/usr/X11R6/lib"
 		CFLAGS_TESTGUI+=`$foxconfig --cflags`
 		OBJCFLAGS+=" -x objective-c++"
 	elif test "x$os" = xwindows; then
 		# On Windows, just set the paths for Fox toolkit
 		if test "x$win_implementation" = xmingw; then
 			CFLAGS_TESTGUI="-I\$(srcdir)/../../hidapi-externals/fox/include -g -c"
 			LIBS_TESTGUI=" -mwindows \$(srcdir)/../../hidapi-externals/fox/lib/libFOX-1.6.a -lgdi32 -Wl,--enable-auto-import -static-libgcc -static-libstdc++ -lkernel32"
 		else
 			# Cygwin
 			CFLAGS_TESTGUI="-DWIN32 -I\$(srcdir)/../../hidapi-externals/fox/include -g -c"
 			LIBS_TESTGUI="\$(srcdir)/../../hidapi-externals/fox/lib/libFOX-cygwin-1.6.a -lgdi32 -Wl,--enable-auto-import -static-libgcc -static-libstdc++ -lkernel32"
 		fi
 	else
 		# On Linux and FreeBSD platforms, use pkg-config to find fox.
 		PKG_CHECK_MODULES([fox], [fox17], [], [PKG_CHECK_MODULES([fox], [fox])])
 		LIBS_TESTGUI="${LIBS_TESTGUI} $fox_LIBS"
 		if test "x$os" = xfreebsd; then
 			LIBS_TESTGUI="${LIBS_TESTGUI} -L/usr/local/lib"
 		fi
 		CFLAGS_TESTGUI="${CFLAGS_TESTGUI} $fox_CFLAGS"
 	fi
 fi
 AC_SUBST([LIBS_TESTGUI])
 AC_SUBST([CFLAGS_TESTGUI])
 AC_SUBST([backend])

 # OS info for Automake
 AM_CONDITIONAL(OS_LINUX, test "x$os" = xlinux)
 AM_CONDITIONAL(OS_DARWIN, test "x$os" = xdarwin)
 AM_CONDITIONAL(OS_FREEBSD, test "x$os" = xfreebsd)
 AM_CONDITIONAL(OS_KFREEBSD, test "x$os" = xkfreebsd)
 AM_CONDITIONAL(OS_WINDOWS, test "x$os" = xwindows)

 AC_CONFIG_HEADERS([config.h])

 if test "x$os" = "xlinux"; then
 	AC_CONFIG_FILES([pc/hidapi-hidraw.pc])
 	AC_CONFIG_FILES([pc/hidapi-libusb.pc])
 else
 	AC_CONFIG_FILES([pc/hidapi.pc])
 fi

 AC_SUBST(LTLDFLAGS)

 AC_CONFIG_FILES([Makefile \
 	hidtest/Makefile \
 	libusb/Makefile \
 	linux/Makefile \
 	mac/Makefile \
 	testgui/Makefile \
 	windows/Makefile])
 AC_OUTPUT
	AC_PREREQ(2.63)

	# Version number. This is currently the only place.
	m4_define([HIDAPI_MAJOR], 0)
	m4_define([HIDAPI_MINOR], 8)
	m4_define([HIDAPI_RELEASE], 0)
	m4_define([HIDAPI_RC], -rc1)
	m4_define([VERSION_STRING], HIDAPI_MAJOR[.]HIDAPI_MINOR[.]HIDAPI_RELEASE[]HIDAPI_RC)

	AC_INIT([hidapi],[VERSION_STRING],[alan@signal11.us])

	# Library soname version
	# Follow the following rules (particularly the ones in the second link):
	# http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
	# http://sourceware.org/autobook/autobook/autobook_91.html
	lt_current="0"
	lt_revision="0"
	lt_age="0"
	LTLDFLAGS="-version-info ${lt_current}:${lt_revision}:${lt_age}"

	AC_CONFIG_MACRO_DIR([m4])
	AM_INIT_AUTOMAKE([foreign -Wall -Werror])
	AC_CONFIG_MACRO_DIR([m4])

	m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
	LT_INIT

	AC_PROG_CC
	AC_PROG_CXX
	AC_PROG_OBJC
	PKG_PROG_PKG_CONFIG


	m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])

	hidapi_lib_error() {
	echo ""
	echo " Library $1 was not found on this system."
	echo " Please install it and re-run ./configure"
	echo ""
	exit 1
	}

	hidapi_prog_error() {
	echo ""
	echo " Program $1 was not found on this system."
	echo " This program is part of $2."
	echo " Please install it and re-run ./configure"
	echo ""
	exit 1
	}

	AC_MSG_CHECKING([operating system])
	AC_MSG_RESULT($host)
	case $host in
	-linux)
	AC_MSG_RESULT([ (Linux back-end)])
	AC_DEFINE(OS_LINUX, 1, [Linux implementations])
	AC_SUBST(OS_LINUX)
	backend="linux"
	os="linux"
	threads="pthreads"

	# HIDAPI/hidraw libs
	PKG_CHECK_MODULES([libudev], [libudev], true, [hidapi_lib_error libudev])
	LIBS_HIDRAW_PR+=" $libudev_LIBS"
	CFLAGS_HIDRAW+=" $libudev_CFLAGS"

	# HIDAPI/libusb libs
	AC_CHECK_LIB([rt], [clock_gettime], [LIBS_LIBUSB_PRIVATE+=" -lrt"], [hidapi_lib_error librt])
	PKG_CHECK_MODULES([libusb], [libusb-1.0 >= 1.0.9], true, [hidapi_lib_error libusb-1.0])
	LIBS_LIBUSB_PRIVATE+=" $libusb_LIBS"
	CFLAGS_LIBUSB+=" $libusb_CFLAGS"
	;;
	-darwin)
	AC_MSG_RESULT([ (Mac OS X back-end)])
	AC_DEFINE(OS_DARWIN, 1, [Mac implementation])
	AC_SUBST(OS_DARWIN)
	backend="mac"
	os="darwin"
	threads="pthreads"
	LIBS="${LIBS} -framework IOKit -framework CoreFoundation"
	;;
	-freebsd)
	AC_MSG_RESULT([ (FreeBSD back-end)])
	AC_DEFINE(OS_FREEBSD, 1, [FreeBSD implementation])
	AC_SUBST(OS_FREEBSD)
	backend="libusb"
	os="freebsd"
	threads="pthreads"

	CFLAGS="$CFLAGS -I/usr/local/include"
	LDFLAGS="$LDFLAGS -L/usr/local/lib"
	LIBS="${LIBS}"
	AC_CHECK_LIB([usb], [libusb_init], [LIBS_LIBUSB_PRIVATE="${LIBS_LIBUSB_PRIVATE} -lusb"], [hidapi_lib_error libusb])
	AC_CHECK_LIB([iconv], [iconv_open], [LIBS_LIBUSB_PRIVATE="${LIBS_LIBUSB_PRIVATE} -liconv"], [hidapi_lib_error libiconv])
	echo libs_priv: $LIBS_LIBUSB_PRIVATE
	;;
	-kfreebsd)
	AC_MSG_RESULT([ (kFreeBSD back-end)])
	AC_DEFINE(OS_KFREEBSD, 1, [kFreeBSD implementation])
	AC_SUBST(OS_KFREEBSD)
	backend="libusb"
	os="kfreebsd"
	threads="pthreads"

	AC_CHECK_LIB([usb], [libusb_init], [LIBS_LIBUSB_PRIVATE="${LIBS_LIBUSB_PRIVATE} -lusb"], [hidapi_lib_error libusb])
	echo libs_priv: $LIBS_LIBUSB_PRIVATE
	;;
	-mingw)
	AC_MSG_RESULT([ (Windows back-end, using MinGW)])
	backend="windows"
	os="windows"
	threads="windows"
	win_implementation="mingw"
	;;
	-cygwin)
	AC_MSG_RESULT([ (Windows back-end, using Cygwin)])
	backend="windows"
	os="windows"
	threads="windows"
	win_implementation="cygwin"
	;;
	*)
	AC_MSG_ERROR([HIDAPI is not supported on your operating system yet])
	esac

	LIBS_HIDRAW="${LIBS} ${LIBS_HIDRAW_PR}"
	LIBS_LIBUSB="${LIBS} ${LIBS_LIBUSB_PRIVATE}"
	AC_SUBST([LIBS_HIDRAW])
	AC_SUBST([LIBS_LIBUSB])
	AC_SUBST([CFLAGS_LIBUSB])
	AC_SUBST([CFLAGS_HIDRAW])

	if test "x$os" = xwindows; then
	AC_DEFINE(OS_WINDOWS, 1, [Windows implementations])
	AC_SUBST(OS_WINDOWS)
	LDFLAGS="${LDFLAGS} -no-undefined"
	LIBS="${LIBS} -lsetupapi"
	fi

	if test "x$threads" = xpthreads; then
	AX_PTHREAD([found_pthreads=yes], [found_pthreads=no])

	if test "x$found_pthreads" = xyes; then
	if test "x$os" = xlinux; then
	# Only use pthreads for libusb implementation on Linux.
	LIBS_LIBUSB="$PTHREAD_LIBS $LIBS_LIBUSB"
	CFLAGS_LIBUSB="$CFLAGS_LIBUSB $PTHREAD_CFLAGS"
	# There's no separate CC on Linux for threading,
	# so it's ok that both implementations use $PTHREAD_CC
	CC="$PTHREAD_CC"
	else
	LIBS="$PTHREAD_LIBS $LIBS"
	CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
	CC="$PTHREAD_CC"
	fi
	fi
	fi

	# Test GUI
	AC_ARG_ENABLE([testgui],
	[AS_HELP_STRING([--enable-testgui],
	[enable building of test GUI (default n)])],
	[testgui_enabled=$enableval],
	[testgui_enabled='no'])
	AM_CONDITIONAL([BUILD_TESTGUI], [test "x$testgui_enabled" != "xno"])

	# Configure the MacOS TestGUI app bundle
	rm -Rf testgui/TestGUI.app
	mkdir -p testgui/TestGUI.app
	cp -R ${srcdir}/testgui/TestGUI.app.in/* testgui/TestGUI.app
	chmod -R u+w testgui/TestGUI.app
	mkdir testgui/TestGUI.app/Contents/MacOS/

	if test "x$testgui_enabled" != "xno"; then
	if test "x$os" = xdarwin; then
	# On Mac OS, don't use pkg-config.
	AC_CHECK_PROG([foxconfig], [fox-config], [fox-config], false)
	if test "x$foxconfig" = "xfalse"; then
	hidapi_prog_error fox-config "FOX Toolkit"
	fi
	LIBS_TESTGUI+=`$foxconfig --libs`
	LIBS_TESTGUI+=" -framework Cocoa -L/usr/X11R6/lib"
	CFLAGS_TESTGUI+=`$foxconfig --cflags`
	OBJCFLAGS+=" -x objective-c++"
	elif test "x$os" = xwindows; then
	# On Windows, just set the paths for Fox toolkit
	if test "x$win_implementation" = xmingw; then
	CFLAGS_TESTGUI="-I\$(srcdir)/../../hidapi-externals/fox/include -g -c"
	LIBS_TESTGUI=" -mwindows \$(srcdir)/../../hidapi-externals/fox/lib/libFOX-1.6.a -lgdi32 -Wl,--enable-auto-import -static-libgcc -static-libstdc++ -lkernel32"
	else
	# Cygwin
	CFLAGS_TESTGUI="-DWIN32 -I\$(srcdir)/../../hidapi-externals/fox/include -g -c"
	LIBS_TESTGUI="\$(srcdir)/../../hidapi-externals/fox/lib/libFOX-cygwin-1.6.a -lgdi32 -Wl,--enable-auto-import -static-libgcc -static-libstdc++ -lkernel32"
	fi
	else
	# On Linux and FreeBSD platforms, use pkg-config to find fox.
	PKG_CHECK_MODULES([fox], [fox17], [], [PKG_CHECK_MODULES([fox], [fox])])
	LIBS_TESTGUI="${LIBS_TESTGUI} $fox_LIBS"
	if test "x$os" = xfreebsd; then
	LIBS_TESTGUI="${LIBS_TESTGUI} -L/usr/local/lib"
	fi
	CFLAGS_TESTGUI="${CFLAGS_TESTGUI} $fox_CFLAGS"
	fi
	fi
	AC_SUBST([LIBS_TESTGUI])
	AC_SUBST([CFLAGS_TESTGUI])
	AC_SUBST([backend])

	# OS info for Automake
	AM_CONDITIONAL(OS_LINUX, test "x$os" = xlinux)
	AM_CONDITIONAL(OS_DARWIN, test "x$os" = xdarwin)
	AM_CONDITIONAL(OS_FREEBSD, test "x$os" = xfreebsd)
	AM_CONDITIONAL(OS_KFREEBSD, test "x$os" = xkfreebsd)
	AM_CONDITIONAL(OS_WINDOWS, test "x$os" = xwindows)

	AC_CONFIG_HEADERS([config.h])

	if test "x$os" = "xlinux"; then
	AC_CONFIG_FILES([pc/hidapi-hidraw.pc])
	AC_CONFIG_FILES([pc/hidapi-libusb.pc])
	else
	AC_CONFIG_FILES([pc/hidapi.pc])
	fi

	AC_SUBST(LTLDFLAGS)

	AC_CONFIG_FILES([Makefile \
	hidtest/Makefile \
	libusb/Makefile \
	linux/Makefile \
	mac/Makefile \
	testgui/Makefile \
	windows/Makefile])
	AC_OUTPUT