configure.ac - platform/external/libexif - Git at Google

 AC_PREREQ(2.59)
 AC_INIT([EXIF library], [0.6.21], [libexif-devel@lists.sourceforge.net], [libexif])
 AC_CONFIG_SRCDIR([libexif/exif-data.h])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_MACRO_DIR([auto-m4])
 AM_INIT_AUTOMAKE([-Wall gnu 1.9 dist-bzip2 dist-zip check-news])
 AM_MAINTAINER_MODE

 # Use the silent-rules feature when possible.
 m4_ifndef([AM_SILENT_RULES], [m4_define([AM_SILENT_RULES],[])])
 AM_SILENT_RULES([no])

 if test ! -d "$srcdir/m4m"; then
 AC_MSG_ERROR([
 You are missing the m4m/ directory in your top
 $PACKAGE_TARNAME source directory.

 You are probably using an ill-maintained CVS tree.
 Running

     cd $srcdir
     cvs co m4m

 and re-running autogen.sh might help.
 ])
 fi

 GP_CHECK_SHELL_ENVIRONMENT
 GP_CONFIG_MSG([Build])
 GP_CONFIG_MSG([Source code location],[${srcdir}])

 dnl ---------------------------------------------------------------------------
 dnl Advanced information about versioning:
 dnl   * "Writing shared libraries" by Mike Hearn
 dnl         http://plan99.net/~mike/writing-shared-libraries.html
 dnl   * libtool.info chapter "Versioning"
 dnl   * libtool.info chapter "Updating library version information"
 dnl ---------------------------------------------------------------------------
 dnl Versioning:
 dnl  - CURRENT (Major):  Increment if the interface has changes. AGE is always
 dnl                      *changed* at the same time.
 dnl  - AGE (Micro):      Increment if any interfaces have been added; set to 0
 dnl		         if any interfaces have been removed. Removal has
 dnl                      precedence over adding, so set to 0 if both happened.
 dnl                      It denotes upward compatibility.
 dnl  - REVISION (Minor): Increment any time the source changes; set to
 dnl			 0 if you incremented CURRENT.
 dnl
 dnl  To summarize. Any interface *change* increment CURRENT. If that interface
 dnl  change does not break upward compatibility (ie it is an addition),
 dnl  increment AGE, Otherwise AGE is reset to 0. If CURRENT has changed,
 dnl  REVISION is set to 0, otherwise REVISION is incremented.
 dnl ---------------------------------------------------------------------------
 dnl C:A:R
 dnl 12:0:1   0.6.13
 dnl 13:1:0   added EXIF_DATA_OPTION_DONT_CHANGE_MAKER_NOTE (for 0.6.14)
 dnl 14:2:0   added XP_ WinXP tags (for 0.6.15)
 dnl 14:2:1   0.6.17
 dnl 15:3:0   added exif_loader_get_buf (for 0.6.18)
 dnl 15:3:1   0.6.19
 dnl 15:3:2   0.6.20
 dnl 15:3:3   0.6.21
 LIBEXIF_CURRENT=15
 LIBEXIF_AGE=3
 LIBEXIF_REVISION=3
 AC_SUBST([LIBEXIF_AGE])
 AC_SUBST([LIBEXIF_REVISION])
 AC_SUBST([LIBEXIF_CURRENT])
 AC_SUBST([LIBEXIF_CURRENT_MIN],[`expr $LIBEXIF_CURRENT - $LIBEXIF_AGE`])
 LIBEXIF_VERSION_INFO="$LIBEXIF_CURRENT:$LIBEXIF_REVISION:$LIBEXIF_AGE"
 AC_SUBST([LIBEXIF_VERSION_INFO])

 AC_PROG_CC
 AC_C_CONST
 AC_C_INLINE
 dnl FIXME: AC_LIBTOOL_WIN32_DLL
 AM_PROG_LIBTOOL
 AM_CPPFLAGS="$CPPFLAGS"
 GP_CONFIG_MSG([Compiler],[${CC}])


 dnl Create a stdint.h-like file containing size-specific integer definitions
 dnl that will always be available
 AX_NEED_STDINT_H([libexif/_stdint.h])


 dnl ------------------------------------------------------------------------
 dnl Whether we're supposed to ship binaries in the tarball
 dnl ------------------------------------------------------------------------

 ship_binaries=false
 AC_ARG_ENABLE([ship-binaries],
 [AS_HELP_STRING([--enable-ship-binaries],
 [Whether to ship binaries in the tarball [default=no]])],[
 	if test x$enableval = xyes; then
 		ship_binaries=true
 	fi
 ])
 AM_CONDITIONAL([SHIP_BINARIES],[$ship_binaries])
 GP_CONFIG_MSG([Ship binaries in tarball],[$ship_binaries])


 dnl ---------------------------------------------------------------------------
 dnl Whether -lm is required for our math functions
 dnl ---------------------------------------------------------------------------

 # we need sqrt and pow which may be in libm
 # We cannot use AC_CHECK_FUNC because if CFLAGS contains
 # -Wall -Werror here the check fails because
 # char *sqrt() conflicts with double sqrt(double xx)

 # Start by assuming -lm is needed, because it's possible that the little
 # test program below will be optimized to in-line floating point code that
 # doesn't require -lm, whereas the library itself cannot be so optimized
 # (this actually seems to be the case on x86 with gcc 4.2). Assuming the
 # reverse means that -lm could be needed but wouldn't be detected below.

 LIBS_orig="$LIBS"
 LIBS="$LIBS -lm"
 AC_MSG_CHECKING([for math functions in libm])
 AC_LINK_IFELSE([
 	#include <math.h>
 	int main() {
 	  double s = sqrt(0);
 	  double p = pow(s,s);
 	  return (int)p;
 	}
 ], [AC_MSG_RESULT(yes)], [
 	AC_MSG_RESULT(no)
 	LIBS="$LIBS_orig"
 	AC_MSG_CHECKING([for math functions without libm])
 	AC_LINK_IFELSE([
 		#include <math.h>
 		int main() {
 		  double s = sqrt(0);
 		  double p = pow(s,s);
 		  return (int)p;
 		}
 	], [
 		AC_MSG_RESULT(yes)
 	],[
 		AC_MSG_RESULT(no)
 		AC_MSG_ERROR([*** Could not find sqrt() & pow() functions])
 	])
 ])

 # doc support
 GP_CHECK_DOC_DIR
 GP_CHECK_DOXYGEN

 # Whether to enable the internal docs build.
 #
 # This takes quite some time due to the generation of lots of call
 # graphs, so it is disabled by default.
 set_enable_internal_docs=no
 AC_ARG_ENABLE([internal-docs], [dnl
 AS_HELP_STRING([--enable-internal-docs],
 [Build internal code docs if doxygen available])], [dnl
 dnl If either --enable-foo nor --disable-foo were given, execute this.
   if   test "x$enableval" = xno \
     || test "x$enableval" = xoff \
     || test "x$enableval" = xfalse;
   then
     set_enable_internal_docs=no
   elif test "x$enableval" = xyes \
     || test "x$enableval" = xon \
     || test "x$enableval" = xtrue
   then
     set_enable_internal_docs=yes
   fi
 ])
 AC_MSG_CHECKING([whether to create internal code docs])
 AC_MSG_RESULT([${set_enable_internal_docs}])
 AM_CONDITIONAL([ENABLE_INTERNAL_DOCS], [test "x${set_enable_internal_docs}" = "xyes"])


 # ---------------------------------------------------------------------------
 # i18n support
 # ---------------------------------------------------------------------------
 ALL_LINGUAS="be bs cs da de en_AU en_CA en_GB es fr it ja nl pl pt pt_BR ru sk sq sr sv tr uk vi zh_CN"
 AM_PO_SUBDIRS
 GP_GETTEXT_HACK([${PACKAGE}-${LIBEXIF_CURRENT_MIN}],
                 [Lutz Mueller and others])
 AM_GNU_GETTEXT_VERSION([0.14.1])
 AM_GNU_GETTEXT([external])
 AM_ICONV()
 GP_GETTEXT_FLAGS()


 dnl ---------------------------------------------------------------------------
 dnl Thread-safe functions
 dnl ---------------------------------------------------------------------------
 AC_CHECK_FUNCS(localtime_r)

 dnl ---------------------------------------------------------------------------
 dnl Compiler/Linker Options and Warnings
 dnl ---------------------------------------------------------------------------
 AM_CPPFLAGS="$AM_CPPFLAGS -I\$(top_srcdir)"
 AM_CPPFLAGS="$AM_CPPFLAGS -I\$(top_builddir)"
 AM_LDFLAGS="$LDFLAGS"
 if test "x$GCC" = "xyes"; then
     AM_CFLAGS="$AM_CFLAGS -ansi -pedantic-error"
     AM_CXXFLAGS="$AM_CXXFLAGS -ansi -pedantic-error"
     AM_CPPFLAGS="$AM_CPPFLAGS -g -Wall -Wmissing-declarations -Wmissing-prototypes"
     AM_LDFLAGS="$AM_LDFLAGS -g -Wall"
 fi


 AC_SUBST(AM_CPPFLAGS)
 AC_SUBST(AM_LDFLAGS)


 dnl ---------------------------------------------------------------------------
 dnl Output files
 dnl ---------------------------------------------------------------------------
 AC_CONFIG_FILES([  po/Makefile.in
   Makefile
   libexif.spec
   libexif/Makefile
   test/Makefile
   test/nls/Makefile
   m4m/Makefile
   doc/Makefile
   doc/Doxyfile
   doc/Doxyfile-internals
   libexif.pc
   libexif-uninstalled.pc
   binary/Makefile
   contrib/Makefile
   contrib/examples/Makefile
 ])
 AC_OUTPUT

 GP_CONFIG_OUTPUT
	AC_PREREQ(2.59)
	AC_INIT([EXIF library], [0.6.21], [libexif-devel@lists.sourceforge.net], [libexif])
	AC_CONFIG_SRCDIR([libexif/exif-data.h])
	AC_CONFIG_HEADERS([config.h])
	AC_CONFIG_MACRO_DIR([auto-m4])
	AM_INIT_AUTOMAKE([-Wall gnu 1.9 dist-bzip2 dist-zip check-news])
	AM_MAINTAINER_MODE

	# Use the silent-rules feature when possible.
	m4_ifndef([AM_SILENT_RULES], [m4_define([AM_SILENT_RULES],[])])
	AM_SILENT_RULES([no])

	if test ! -d "$srcdir/m4m"; then
	AC_MSG_ERROR([
	You are missing the m4m/ directory in your top
	$PACKAGE_TARNAME source directory.

	You are probably using an ill-maintained CVS tree.
	Running

	cd $srcdir
	cvs co m4m

	and re-running autogen.sh might help.
	])
	fi

	GP_CHECK_SHELL_ENVIRONMENT
	GP_CONFIG_MSG([Build])
	GP_CONFIG_MSG([Source code location],[${srcdir}])

	dnl ---------------------------------------------------------------------------
	dnl Advanced information about versioning:
	dnl * "Writing shared libraries" by Mike Hearn
	dnl http://plan99.net/~mike/writing-shared-libraries.html
	dnl * libtool.info chapter "Versioning"
	dnl * libtool.info chapter "Updating library version information"
	dnl ---------------------------------------------------------------------------
	dnl Versioning:
	dnl - CURRENT (Major): Increment if the interface has changes. AGE is always
	dnl changed at the same time.
	dnl - AGE (Micro): Increment if any interfaces have been added; set to 0
	dnl if any interfaces have been removed. Removal has
	dnl precedence over adding, so set to 0 if both happened.
	dnl It denotes upward compatibility.
	dnl - REVISION (Minor): Increment any time the source changes; set to
	dnl 0 if you incremented CURRENT.
	dnl
	dnl To summarize. Any interface change increment CURRENT. If that interface
	dnl change does not break upward compatibility (ie it is an addition),
	dnl increment AGE, Otherwise AGE is reset to 0. If CURRENT has changed,
	dnl REVISION is set to 0, otherwise REVISION is incremented.
	dnl ---------------------------------------------------------------------------
	dnl C:A:R
	dnl 12:0:1 0.6.13
	dnl 13:1:0 added EXIF_DATA_OPTION_DONT_CHANGE_MAKER_NOTE (for 0.6.14)
	dnl 14:2:0 added XP_ WinXP tags (for 0.6.15)
	dnl 14:2:1 0.6.17
	dnl 15:3:0 added exif_loader_get_buf (for 0.6.18)
	dnl 15:3:1 0.6.19
	dnl 15:3:2 0.6.20
	dnl 15:3:3 0.6.21
	LIBEXIF_CURRENT=15
	LIBEXIF_AGE=3
	LIBEXIF_REVISION=3
	AC_SUBST([LIBEXIF_AGE])
	AC_SUBST([LIBEXIF_REVISION])
	AC_SUBST([LIBEXIF_CURRENT])
	AC_SUBST([LIBEXIF_CURRENT_MIN],[`expr $LIBEXIF_CURRENT - $LIBEXIF_AGE`])
	LIBEXIF_VERSION_INFO="$LIBEXIF_CURRENT:$LIBEXIF_REVISION:$LIBEXIF_AGE"
	AC_SUBST([LIBEXIF_VERSION_INFO])

	AC_PROG_CC
	AC_C_CONST
	AC_C_INLINE
	dnl FIXME: AC_LIBTOOL_WIN32_DLL
	AM_PROG_LIBTOOL
	AM_CPPFLAGS="$CPPFLAGS"
	GP_CONFIG_MSG([Compiler],[${CC}])


	dnl Create a stdint.h-like file containing size-specific integer definitions
	dnl that will always be available
	AX_NEED_STDINT_H([libexif/_stdint.h])


	dnl ------------------------------------------------------------------------
	dnl Whether we're supposed to ship binaries in the tarball
	dnl ------------------------------------------------------------------------

	ship_binaries=false
	AC_ARG_ENABLE([ship-binaries],
	[AS_HELP_STRING([--enable-ship-binaries],
	[Whether to ship binaries in the tarball [default=no]])],[
	if test x$enableval = xyes; then
	ship_binaries=true
	fi
	])
	AM_CONDITIONAL([SHIP_BINARIES],[$ship_binaries])
	GP_CONFIG_MSG([Ship binaries in tarball],[$ship_binaries])


	dnl ---------------------------------------------------------------------------
	dnl Whether -lm is required for our math functions
	dnl ---------------------------------------------------------------------------

	# we need sqrt and pow which may be in libm
	# We cannot use AC_CHECK_FUNC because if CFLAGS contains
	# -Wall -Werror here the check fails because
	# char *sqrt() conflicts with double sqrt(double xx)

	# Start by assuming -lm is needed, because it's possible that the little
	# test program below will be optimized to in-line floating point code that
	# doesn't require -lm, whereas the library itself cannot be so optimized
	# (this actually seems to be the case on x86 with gcc 4.2). Assuming the
	# reverse means that -lm could be needed but wouldn't be detected below.

	LIBS_orig="$LIBS"
	LIBS="$LIBS -lm"
	AC_MSG_CHECKING([for math functions in libm])
	AC_LINK_IFELSE([
	#include <math.h>
	int main() {
	double s = sqrt(0);
	double p = pow(s,s);
	return (int)p;
	}
	], [AC_MSG_RESULT(yes)], [
	AC_MSG_RESULT(no)
	LIBS="$LIBS_orig"
	AC_MSG_CHECKING([for math functions without libm])
	AC_LINK_IFELSE([
	#include <math.h>
	int main() {
	double s = sqrt(0);
	double p = pow(s,s);
	return (int)p;
	}
	], [
	AC_MSG_RESULT(yes)
	],[
	AC_MSG_RESULT(no)
	AC_MSG_ERROR([*** Could not find sqrt() & pow() functions])
	])
	])

	# doc support
	GP_CHECK_DOC_DIR
	GP_CHECK_DOXYGEN

	# Whether to enable the internal docs build.
	#
	# This takes quite some time due to the generation of lots of call
	# graphs, so it is disabled by default.
	set_enable_internal_docs=no
	AC_ARG_ENABLE([internal-docs], [dnl
	AS_HELP_STRING([--enable-internal-docs],
	[Build internal code docs if doxygen available])], [dnl
	dnl If either --enable-foo nor --disable-foo were given, execute this.
	if test "x$enableval" = xno \
	\|\| test "x$enableval" = xoff \
	\|\| test "x$enableval" = xfalse;
	then
	set_enable_internal_docs=no
	elif test "x$enableval" = xyes \
	\|\| test "x$enableval" = xon \
	\|\| test "x$enableval" = xtrue
	then
	set_enable_internal_docs=yes
	fi
	])
	AC_MSG_CHECKING([whether to create internal code docs])
	AC_MSG_RESULT([${set_enable_internal_docs}])
	AM_CONDITIONAL([ENABLE_INTERNAL_DOCS], [test "x${set_enable_internal_docs}" = "xyes"])


	# ---------------------------------------------------------------------------
	# i18n support
	# ---------------------------------------------------------------------------
	ALL_LINGUAS="be bs cs da de en_AU en_CA en_GB es fr it ja nl pl pt pt_BR ru sk sq sr sv tr uk vi zh_CN"
	AM_PO_SUBDIRS
	GP_GETTEXT_HACK([${PACKAGE}-${LIBEXIF_CURRENT_MIN}],
	[Lutz Mueller and others])
	AM_GNU_GETTEXT_VERSION([0.14.1])
	AM_GNU_GETTEXT([external])
	AM_ICONV()
	GP_GETTEXT_FLAGS()


	dnl ---------------------------------------------------------------------------
	dnl Thread-safe functions
	dnl ---------------------------------------------------------------------------
	AC_CHECK_FUNCS(localtime_r)

	dnl ---------------------------------------------------------------------------
	dnl Compiler/Linker Options and Warnings
	dnl ---------------------------------------------------------------------------
	AM_CPPFLAGS="$AM_CPPFLAGS -I\$(top_srcdir)"
	AM_CPPFLAGS="$AM_CPPFLAGS -I\$(top_builddir)"
	AM_LDFLAGS="$LDFLAGS"
	if test "x$GCC" = "xyes"; then
	AM_CFLAGS="$AM_CFLAGS -ansi -pedantic-error"
	AM_CXXFLAGS="$AM_CXXFLAGS -ansi -pedantic-error"
	AM_CPPFLAGS="$AM_CPPFLAGS -g -Wall -Wmissing-declarations -Wmissing-prototypes"
	AM_LDFLAGS="$AM_LDFLAGS -g -Wall"
	fi



	AC_SUBST(AM_CPPFLAGS)
	AC_SUBST(AM_LDFLAGS)


	dnl ---------------------------------------------------------------------------
	dnl Output files
	dnl ---------------------------------------------------------------------------
	AC_CONFIG_FILES([ po/Makefile.in
	Makefile
	libexif.spec
	libexif/Makefile
	test/Makefile
	test/nls/Makefile
	m4m/Makefile
	doc/Makefile
	doc/Doxyfile
	doc/Doxyfile-internals
	libexif.pc
	libexif-uninstalled.pc
	binary/Makefile
	contrib/Makefile
	contrib/examples/Makefile
	])
	AC_OUTPUT

	GP_CONFIG_OUTPUT