configure.ac - platform/external/libusb - Gitiles

 dnl These m4 macros are whitespace sensitive and break if moved around much.
 m4_define([LU_VERSION_H], m4_include([libusb/version.h]))
 m4_define([LU_DEFINE_VERSION_ATOM],
 	[m4_define([$1], m4_bregexp(LU_VERSION_H,
 	[^#define\s*$1\s*\([0-9]*\).*], [\1]))])
 dnl The m4_bregexp() returns (only) the numbers following the #define named
 dnl in the first macro parameter. m4_define() then defines the name for use
 dnl in AC_INIT().

 LU_DEFINE_VERSION_ATOM([LIBUSB_MAJOR])
 LU_DEFINE_VERSION_ATOM([LIBUSB_MINOR])
 LU_DEFINE_VERSION_ATOM([LIBUSB_MICRO])

 AC_INIT([libusb], LIBUSB_MAJOR[.]LIBUSB_MINOR[.]LIBUSB_MICRO, [libusb-devel@lists.sourceforge.net], [libusb], [http://www.libusb.org/])

 # Library versioning
 # These numbers should be tweaked on every release. Read carefully:
 # http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
 # http://sourceware.org/autobook/autobook/autobook_91.html
 lt_current="1"
 lt_revision="0"
 lt_age="1"
 LTLDFLAGS="-version-info ${lt_current}:${lt_revision}:${lt_age}"

 AM_INIT_AUTOMAKE
 AM_MAINTAINER_MODE

 AC_CONFIG_SRCDIR([libusb/core.c])
 AC_CONFIG_MACRO_DIR([m4])
 AM_CONFIG_HEADER([config.h])
 m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])

 AC_PREREQ([2.50])
 AC_PROG_CC
 AC_PROG_LIBTOOL
 AC_C_INLINE
 AM_PROG_CC_C_O
 AC_DEFINE([_GNU_SOURCE], 1, [Use GNU extensions])

 LTLDFLAGS="${LTLDFLAGS} -no-undefined"

 AC_MSG_CHECKING([operating system])
 case $host in
 *-linux*)
 	AC_DEFINE(OS_LINUX, 1, [Linux backend])
 	AC_SUBST(OS_LINUX)
 	AC_MSG_RESULT([Linux])
 	backend="linux"
 	AC_CHECK_LIB(rt, clock_gettime, PC_LIBS_PRIVATE="-lrt")
 	threads="posix"
 	THREAD_CFLAGS="-pthread"
 	PC_LIBS_PRIVATE="${PC_LIBS_PRIVATE} -pthread"
 	AC_CHECK_HEADERS([poll.h])
 	AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])
 	;;
 *-darwin*)
 	AC_DEFINE(OS_DARWIN, 1, [Darwin backend])
 	AC_SUBST(OS_DARWIN)
 	AC_MSG_RESULT([Darwin/Mac OS X])
 	backend="darwin"
 	threads="posix"
 	LIBS="${LIBS} -lobjc"
 	PC_LIBS_PRIVATE="-Wl,-framework,IOKit -Wl,-framework,CoreFoundation"
 	LTLDFLAGS="${LTLDFLAGS} -Wl,-prebind"
 	AC_CHECK_HEADERS([poll.h])
 	AC_CHECK_TYPE([nfds_t],
 		[AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])],
 		[AC_DEFINE([POLL_NFDS_TYPE],[unsigned int],[type of second poll() argument])],
 		[#include <poll.h>])
 	;;
 *-mingw*)
 	AC_MSG_RESULT([Windows])
 	backend="windows"
 	;;
 *-cygwin*)
 	AC_MSG_RESULT([Cygwin (using Windows backend)])
 	backend="windows"
 	threads="posix"
 	;;
 *)
 	AC_MSG_ERROR([unsupported operating system])
 esac
 if test "$backend" = windows; then
 	AC_DEFINE(OS_WINDOWS, 1, [Windows backend])
 	AC_SUBST(OS_WINDOWS)
 	PC_LIBS_PRIVATE=""
 	LTLDFLAGS="${LTLDFLAGS} -avoid-version -Wl,--add-stdcall-alias"
 	AC_CHECK_TOOL(RC, windres, no)
 	AC_DEFINE([POLL_NFDS_TYPE],[unsigned int],[type of second poll() argument])
 fi
 AC_SUBST(THREAD_CFLAGS)
 AC_SUBST(PC_LIBS_PRIVATE)
 LIBS="${LIBS} ${PC_LIBS_PRIVATE}"

 AM_CONDITIONAL(OS_LINUX, test "x$backend" = xlinux)
 AM_CONDITIONAL(OS_DARWIN, test "x$backend" = xdarwin)
 AM_CONDITIONAL(OS_WINDOWS, test "x$backend" = xwindows)
 AM_CONDITIONAL(THREADS_POSIX, test "x$threads" = xposix)
 if test "$threads" = posix; then
 	AC_DEFINE(THREADS_POSIX, 1, [Use POSIX Threads])
 fi

 # timerfd
 AC_CHECK_HEADER([sys/timerfd.h], [timerfd_h=1], [timerfd_h=0])
 AC_ARG_ENABLE([timerfd],
 	[AS_HELP_STRING([--enable-timerfd],
 		[use timerfd for timing (default auto)])],
 	[use_timerfd=$enableval], [use_timerfd='auto'])

 if test "x$use_timerfd" = "xyes" -a "x$timerfd_h" = "x0"; then
 	AC_MSG_ERROR([timerfd header not available; glibc 2.9+ required])
 fi

 AC_CHECK_DECL([TFD_NONBLOCK], [tfd_hdr_ok=yes], [tfd_hdr_ok=no], [#include <sys/timerfd.h>])
 if test "x$use_timerfd" = "xyes" -a "x$tfd_hdr_ok" = "xno"; then
 	AC_MSG_ERROR([timerfd header not usable; glibc 2.9+ required])
 fi

 AC_MSG_CHECKING([whether to use timerfd for timing])
 if test "x$use_timerfd" = "xno"; then
 	AC_MSG_RESULT([no (disabled by user)])
 else
 	if test "x$timerfd_h" = "x1" -a "x$tfd_hdr_ok" = "xyes"; then
 		AC_MSG_RESULT([yes])
 		AC_DEFINE(USBI_TIMERFD_AVAILABLE, 1, [timerfd headers available])
 	else
 		AC_MSG_RESULT([no (header not available)])
 	fi
 fi

 AC_CHECK_TYPES(struct timespec)

 # Message logging
 AC_ARG_ENABLE([log], [AS_HELP_STRING([--disable-log], [disable all logging])],
 	[log_enabled=$enableval],
 	[log_enabled='yes'])
 if test "x$log_enabled" != "xno"; then
 	AC_DEFINE([ENABLE_LOGGING], 1, [Message logging])
 fi

 AC_ARG_ENABLE([debug-log], [AS_HELP_STRING([--enable-debug-log],
 	[enable debug logging (default n)])],
 	[debug_log_enabled=$enableval],
 	[debug_log_enabled='no'])
 if test "x$debug_log_enabled" != "xno"; then
 	AC_DEFINE([ENABLE_DEBUG_LOGGING], 1, [Debug message logging])
 fi

 # Examples build
 AC_ARG_ENABLE([examples-build], [AS_HELP_STRING([--enable-examples-build],
 	[build example applications (default n)])],
 	[build_examples=$enableval],
 	[build_examples='no'])
 AM_CONDITIONAL([BUILD_EXAMPLES], [test "x$build_examples" != "xno"])

 # check for -fvisibility=hidden compiler support (GCC >= 3.4)
 saved_cflags="$CFLAGS"
 # -Werror required for cygwin
 CFLAGS="$CFLAGS -Werror -fvisibility=hidden"
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
 	[VISIBILITY_CFLAGS="-fvisibility=hidden"
 	 AC_DEFINE([DEFAULT_VISIBILITY], [__attribute__((visibility("default")))], [Default visibility]) ],
 	[ VISIBILITY_CFLAGS=""
 	 AC_DEFINE([DEFAULT_VISIBILITY], [], [Default visibility]) ],
 	])
 CFLAGS="$saved_cflags"

 # check for -Wno-pointer-sign compiler support (GCC >= 4)
 saved_cflags="$CFLAGS"
 CFLAGS="$CFLAGS -Wno-pointer-sign"
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
 	nopointersign_cflags="-Wno-pointer-sign", nopointersign_cflags="")
 CFLAGS="$saved_cflags"

 # sigaction not available on MinGW
 AC_CHECK_FUNC([sigaction], [have_sigaction=yes], [have_sigaction=no])
 AM_CONDITIONAL([HAVE_SIGACTION], [test "x$have_sigaction" = "xyes"])

 # headers not available on all platforms but required on others
 AC_CHECK_HEADERS([sys/time.h])

 AM_CFLAGS="-std=gnu99 -Wall -Wundef -Wunused -Wstrict-prototypes -Werror-implicit-function-declaration $nopointersign_cflags -Wshadow"

 AC_SUBST(VISIBILITY_CFLAGS)
 AC_SUBST(AM_CFLAGS)
 AC_SUBST(LTLDFLAGS)

 AC_CONFIG_FILES([libusb-1.0.pc])
 AC_CONFIG_FILES([Makefile])
 AC_CONFIG_FILES([libusb/Makefile])
 AC_CONFIG_FILES([examples/Makefile])
 AC_CONFIG_FILES([doc/Makefile])
 AC_CONFIG_FILES([doc/doxygen.cfg])
 AC_OUTPUT
	dnl These m4 macros are whitespace sensitive and break if moved around much.
	m4_define([LU_VERSION_H], m4_include([libusb/version.h]))
	m4_define([LU_DEFINE_VERSION_ATOM],
	[m4_define([$1], m4_bregexp(LU_VERSION_H,
	[^#define\s$1\s\([0-9]\).], [\1]))])
	dnl The m4_bregexp() returns (only) the numbers following the #define named
	dnl in the first macro parameter. m4_define() then defines the name for use
	dnl in AC_INIT().

	LU_DEFINE_VERSION_ATOM([LIBUSB_MAJOR])
	LU_DEFINE_VERSION_ATOM([LIBUSB_MINOR])
	LU_DEFINE_VERSION_ATOM([LIBUSB_MICRO])

	AC_INIT([libusb], LIBUSB_MAJOR[.]LIBUSB_MINOR[.]LIBUSB_MICRO, [libusb-devel@lists.sourceforge.net], [libusb], [http://www.libusb.org/])

	# Library versioning
	# These numbers should be tweaked on every release. Read carefully:
	# http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
	# http://sourceware.org/autobook/autobook/autobook_91.html
	lt_current="1"
	lt_revision="0"
	lt_age="1"
	LTLDFLAGS="-version-info ${lt_current}:${lt_revision}:${lt_age}"

	AM_INIT_AUTOMAKE
	AM_MAINTAINER_MODE

	AC_CONFIG_SRCDIR([libusb/core.c])
	AC_CONFIG_MACRO_DIR([m4])
	AM_CONFIG_HEADER([config.h])
	m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])

	AC_PREREQ([2.50])
	AC_PROG_CC
	AC_PROG_LIBTOOL
	AC_C_INLINE
	AM_PROG_CC_C_O
	AC_DEFINE([_GNU_SOURCE], 1, [Use GNU extensions])

	LTLDFLAGS="${LTLDFLAGS} -no-undefined"

	AC_MSG_CHECKING([operating system])
	case $host in
	-linux)
	AC_DEFINE(OS_LINUX, 1, [Linux backend])
	AC_SUBST(OS_LINUX)
	AC_MSG_RESULT([Linux])
	backend="linux"
	AC_CHECK_LIB(rt, clock_gettime, PC_LIBS_PRIVATE="-lrt")
	threads="posix"
	THREAD_CFLAGS="-pthread"
	PC_LIBS_PRIVATE="${PC_LIBS_PRIVATE} -pthread"
	AC_CHECK_HEADERS([poll.h])
	AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])
	;;
	-darwin)
	AC_DEFINE(OS_DARWIN, 1, [Darwin backend])
	AC_SUBST(OS_DARWIN)
	AC_MSG_RESULT([Darwin/Mac OS X])
	backend="darwin"
	threads="posix"
	LIBS="${LIBS} -lobjc"
	PC_LIBS_PRIVATE="-Wl,-framework,IOKit -Wl,-framework,CoreFoundation"
	LTLDFLAGS="${LTLDFLAGS} -Wl,-prebind"
	AC_CHECK_HEADERS([poll.h])
	AC_CHECK_TYPE([nfds_t],
	[AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])],
	[AC_DEFINE([POLL_NFDS_TYPE],[unsigned int],[type of second poll() argument])],
	[#include <poll.h>])
	;;
	-mingw)
	AC_MSG_RESULT([Windows])
	backend="windows"
	;;
	-cygwin)
	AC_MSG_RESULT([Cygwin (using Windows backend)])
	backend="windows"
	threads="posix"
	;;
	*)
	AC_MSG_ERROR([unsupported operating system])
	esac
	if test "$backend" = windows; then
	AC_DEFINE(OS_WINDOWS, 1, [Windows backend])
	AC_SUBST(OS_WINDOWS)
	PC_LIBS_PRIVATE=""
	LTLDFLAGS="${LTLDFLAGS} -avoid-version -Wl,--add-stdcall-alias"
	AC_CHECK_TOOL(RC, windres, no)
	AC_DEFINE([POLL_NFDS_TYPE],[unsigned int],[type of second poll() argument])
	fi
	AC_SUBST(THREAD_CFLAGS)
	AC_SUBST(PC_LIBS_PRIVATE)
	LIBS="${LIBS} ${PC_LIBS_PRIVATE}"

	AM_CONDITIONAL(OS_LINUX, test "x$backend" = xlinux)
	AM_CONDITIONAL(OS_DARWIN, test "x$backend" = xdarwin)
	AM_CONDITIONAL(OS_WINDOWS, test "x$backend" = xwindows)
	AM_CONDITIONAL(THREADS_POSIX, test "x$threads" = xposix)
	if test "$threads" = posix; then
	AC_DEFINE(THREADS_POSIX, 1, [Use POSIX Threads])
	fi

	# timerfd
	AC_CHECK_HEADER([sys/timerfd.h], [timerfd_h=1], [timerfd_h=0])
	AC_ARG_ENABLE([timerfd],
	[AS_HELP_STRING([--enable-timerfd],
	[use timerfd for timing (default auto)])],
	[use_timerfd=$enableval], [use_timerfd='auto'])

	if test "x$use_timerfd" = "xyes" -a "x$timerfd_h" = "x0"; then
	AC_MSG_ERROR([timerfd header not available; glibc 2.9+ required])
	fi

	AC_CHECK_DECL([TFD_NONBLOCK], [tfd_hdr_ok=yes], [tfd_hdr_ok=no], [#include <sys/timerfd.h>])
	if test "x$use_timerfd" = "xyes" -a "x$tfd_hdr_ok" = "xno"; then
	AC_MSG_ERROR([timerfd header not usable; glibc 2.9+ required])
	fi

	AC_MSG_CHECKING([whether to use timerfd for timing])
	if test "x$use_timerfd" = "xno"; then
	AC_MSG_RESULT([no (disabled by user)])
	else
	if test "x$timerfd_h" = "x1" -a "x$tfd_hdr_ok" = "xyes"; then
	AC_MSG_RESULT([yes])
	AC_DEFINE(USBI_TIMERFD_AVAILABLE, 1, [timerfd headers available])
	else
	AC_MSG_RESULT([no (header not available)])
	fi
	fi

	AC_CHECK_TYPES(struct timespec)

	# Message logging
	AC_ARG_ENABLE([log], [AS_HELP_STRING([--disable-log], [disable all logging])],
	[log_enabled=$enableval],
	[log_enabled='yes'])
	if test "x$log_enabled" != "xno"; then
	AC_DEFINE([ENABLE_LOGGING], 1, [Message logging])
	fi

	AC_ARG_ENABLE([debug-log], [AS_HELP_STRING([--enable-debug-log],
	[enable debug logging (default n)])],
	[debug_log_enabled=$enableval],
	[debug_log_enabled='no'])
	if test "x$debug_log_enabled" != "xno"; then
	AC_DEFINE([ENABLE_DEBUG_LOGGING], 1, [Debug message logging])
	fi

	# Examples build
	AC_ARG_ENABLE([examples-build], [AS_HELP_STRING([--enable-examples-build],
	[build example applications (default n)])],
	[build_examples=$enableval],
	[build_examples='no'])
	AM_CONDITIONAL([BUILD_EXAMPLES], [test "x$build_examples" != "xno"])

	# check for -fvisibility=hidden compiler support (GCC >= 3.4)
	saved_cflags="$CFLAGS"
	# -Werror required for cygwin
	CFLAGS="$CFLAGS -Werror -fvisibility=hidden"
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
	[VISIBILITY_CFLAGS="-fvisibility=hidden"
	AC_DEFINE([DEFAULT_VISIBILITY], [__attribute__((visibility("default")))], [Default visibility]) ],
	[ VISIBILITY_CFLAGS=""
	AC_DEFINE([DEFAULT_VISIBILITY], [], [Default visibility]) ],
	])
	CFLAGS="$saved_cflags"

	# check for -Wno-pointer-sign compiler support (GCC >= 4)
	saved_cflags="$CFLAGS"
	CFLAGS="$CFLAGS -Wno-pointer-sign"
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
	nopointersign_cflags="-Wno-pointer-sign", nopointersign_cflags="")
	CFLAGS="$saved_cflags"

	# sigaction not available on MinGW
	AC_CHECK_FUNC([sigaction], [have_sigaction=yes], [have_sigaction=no])
	AM_CONDITIONAL([HAVE_SIGACTION], [test "x$have_sigaction" = "xyes"])

	# headers not available on all platforms but required on others
	AC_CHECK_HEADERS([sys/time.h])

	AM_CFLAGS="-std=gnu99 -Wall -Wundef -Wunused -Wstrict-prototypes -Werror-implicit-function-declaration $nopointersign_cflags -Wshadow"

	AC_SUBST(VISIBILITY_CFLAGS)
	AC_SUBST(AM_CFLAGS)
	AC_SUBST(LTLDFLAGS)

	AC_CONFIG_FILES([libusb-1.0.pc])
	AC_CONFIG_FILES([Makefile])
	AC_CONFIG_FILES([libusb/Makefile])
	AC_CONFIG_FILES([examples/Makefile])
	AC_CONFIG_FILES([doc/Makefile])
	AC_CONFIG_FILES([doc/doxygen.cfg])
	AC_OUTPUT