AC_PREREQ(2.59)

AC_INIT([EXIF library], [0.6.22], [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 subdir-objects])

AM_MAINTAINER_MODE

# Use the silent-rules feature when possible.

m4_ifndef([AM_SILENT_RULES], [m4_define([AM_SILENT_RULES],[])])

AM_SILENT_RULES([yes])

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

dnl 15:3:4   0.6.22

LIBEXIF_CURRENT=15

LIBEXIF_AGE=3

LIBEXIF_REVISION=4

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])

AM_PROG_CC_C_O

AC_C_CONST

AC_C_INLINE

dnl FIXME: AC_LIBTOOL_WIN32_DLL

AM_PROG_AR

AM_PROG_LIBTOOL

AM_CPPFLAGS="$CPPFLAGS"

GP_CONFIG_MSG([Compiler],[${CC}])

AC_SYS_LARGEFILE

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([AC_LANG_PROGRAM([

	  #include <math.h>

	  ],[

	    double s = sqrt(0);

	    double p = pow(s,s);

	  ])],

	[AC_MSG_RESULT(yes)], [

	AC_MSG_RESULT(no)

	LIBS="$LIBS_orig"

	AC_MSG_CHECKING([for math functions without libm])

	AC_LINK_IFELSE([AC_LANG_PROGRAM([

		#include <math.h>

		],[

		  double s = sqrt(0);

		  double p = pow(s,s);

		])],

	[

		AC_MSG_RESULT(yes)

	],[

		AC_MSG_RESULT(no)

		AC_MSG_ERROR([*** Could not find sqrt() & pow() functions])

	])

])

# Check whether libfailmalloc is available for tests

CHECK_FAILMALLOC

# 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 ms 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/check-vars.sh

  test/nls/Makefile

  m4m/Makefile

  doc/Makefile

  doc/Doxyfile

  doc/Doxyfile-internals

  libexif.pc

  libexif-uninstalled.pc

  binary-dist/Makefile

  contrib/Makefile

  contrib/examples/Makefile

])

AC_OUTPUT

GP_CONFIG_OUTPUT