#
# LittleCMS 2 configure script
#

AC_PREREQ(2.60)

#
# Set the package name and version
#
AC_INIT(lcms2,2.4)

#
# Libtool library revision control info
# See the libtool documentation under the heading "Libtool's versioning
# system" in order to understand the meaning of these fields
#
# Here are a set of rules to help you update your library version
# information:
#
#  1. Start with version information of `0:0:0' for each libtool library.
#  2. Update the version information only immediately before a public
#     release of your software. More frequent updates are unnecessary, and
#     only guarantee that the current interface number gets larger faster.
#  3. If the library source code has changed at all since the last update,
#     then increment revision (`c:r:a' becomes `c:r+1:a').
#  4. If any interfaces have been added, removed, or changed since the last
#     update, increment current, and set revision to 0.
#  5. If any interfaces have been added since the last public release, then
#     increment age.
#  6. If any interfaces have been removed since the last public release,
#     then set age to 0.
#
LIBRARY_CURRENT=2
LIBRARY_REVISION=4
LIBRARY_AGE=0

AC_SUBST(LIBRARY_CURRENT)dnl
AC_SUBST(LIBRARY_REVISION)dnl
AC_SUBST(LIBRARY_AGE)dnl

# Obtain system type by running config.guess
AC_CANONICAL_HOST

AM_INIT_AUTOMAKE([foreign 1.7.2 no-define dist-zip])

# Disable JPEG.
AC_ARG_WITH(jpeg,
	      [  --without-jpeg          disable JPEG support],
	      [with_jpeg=$withval],
	      [with_jpeg='yes'])

# Disable TIFF.
AC_ARG_WITH(tiff,
	      [  --without-tiff          disable TIFF support],
	      [with_tiff=$withval],
	      [with_tiff='yes'])

# Disable ZLIB
AC_ARG_WITH(zlib,
	      [  --without-zlib          disable ZLIB support],
	      [with_zlib=$withval],
	      [with_zlib='yes'])

# Check for programs
AC_PROG_CC_STDC
AC_PROG_CPP
AC_PROG_CXX

#AM_PROG_LD
#AC_SUBST(LD)
#AC_PROG_INSTALL
#AC_PROG_MAKE_SET
#AC_PROG_LN_S

#
# Tests for Windows
#
AC_EXEEXT
AC_OBJEXT

# Configure libtool
AC_ENABLE_SHARED
AC_ENABLE_STATIC
AC_LIBTOOL_WIN32_DLL
AC_LIBTOOL_SETUP
AC_PROG_LIBTOOL
AC_SUBST(LIBTOOL_DEPS)

# Add configure option --enable-maintainer-mode which enables dependency
# checking and generation useful to package maintainers.  This is made an
# option to avoid confusing end users.
AM_MAINTAINER_MODE

# If the C compiler supports the keyword inline, do nothing. Otherwise
# define inline to __inline__ or __inline if it accepts one of those,
# otherwise define inline to be empty.
AC_C_INLINE
AC_SUBST(inline)

# If words are stored with the most significant byte first (like
# Motorola and SPARC CPUs), define `WORDS_BIGENDIAN'.
AC_C_BIGENDIAN

#
# Find math library
#
LIB_MATH=''
AC_CHECK_LIB(m,sqrt,LIB_MATH="-lm",,)
LIBS="$LIB_MATH $LIBS"
AC_SUBST(LIB_MATH)

#
# Check for JPEG
#
have_jpeg='no'
LIB_JPEG=''
if test ! "$with_jpeg" = 'no'
then
    AC_MSG_CHECKING(for JPEG support )
    AC_MSG_RESULT()
    failed=0;
    passed=0;
    AC_CHECK_HEADER(jconfig.h,passed=`expr $passed + 1`,failed=`expr $failed + 1`)
    AC_CHECK_HEADER(jerror.h,passed=`expr $passed + 1`,failed=`expr $failed + 1`)
    AC_CHECK_HEADER(jmorecfg.h,passed=`expr $passed + 1`,failed=`expr $failed + 1`)
    AC_CHECK_HEADER(jpeglib.h,passed=`expr $passed + 1`,failed=`expr $failed + 1`)
    AC_CHECK_LIB(jpeg,jpeg_read_header,passed=`expr $passed + 1`,failed=`expr $failed + 1`,)

# Test for compatible JPEG library
if test ! "$ac_cv_jpeg_version_ok" = 'yes' ; then
AC_CACHE_CHECK(for JPEG library is version 6b or later, ac_cv_jpeg_version_ok,
[AC_TRY_COMPILE(
#include <stdio.h>
#include <stdlib.h>
#include <jpeglib.h>
,
changequote(<<, >>)dnl
<<
#if JPEG_LIB_VERSION < 62
#error IJG JPEG library must be version 6b or newer!
#endif
return 0;
>>,
changequote([, ])dnl
ac_cv_jpeg_version_ok='yes',
ac_cv_jpeg_version_ok='no')])
if test "$ac_cv_jpeg_version_ok" = 'yes' ; then
 AC_MSG_RESULT(yes)
 passed=`expr $passed + 1`
else
 AC_MSG_RESULT(no)
 failed=`expr $failed + 1`
fi
fi
    AC_MSG_CHECKING(if JPEG package is complete)
    if test $passed -gt 0
    then
    if test $failed -gt 0
    then
	AC_MSG_RESULT(no -- some components failed test)
        have_jpeg='no (failed tests)'
    else
	LIB_JPEG='-ljpeg'
	LIBS="$LIB_JPEG $LIBS"
	AC_DEFINE(HasJPEG,1,Define if you have JPEG library)
	AC_MSG_RESULT(yes)
        have_jpeg='yes'
    fi
    else
        AC_MSG_RESULT(no)
    fi
fi
AM_CONDITIONAL(HasJPEG, test "$have_jpeg" = 'yes')
AC_SUBST(LIB_JPEG)

#
# Check for ZLIB
#
have_zlib='no'
dnl PNG requires zlib so enable zlib check if PNG is requested
if test ! "$with_zlib" = 'no' || test ! "$with_png" = 'no'
then
  LIB_ZLIB=''
  AC_MSG_CHECKING(for ZLIB support )
  AC_MSG_RESULT()
  failed=0;
  passed=0;
  AC_CHECK_HEADER(zconf.h,passed=`expr $passed + 1`,failed=`expr $failed + 1`)
  AC_CHECK_HEADER(zlib.h,passed=`expr $passed + 1`,failed=`expr $failed + 1`)
  AC_CHECK_LIB(z,compress,passed=`expr $passed + 1`,failed=`expr $failed + 1`,)
  AC_CHECK_LIB(z,uncompress,passed=`expr $passed + 1`,failed=`expr $failed + 1`,)
  AC_CHECK_LIB(z,deflate,passed=`expr $passed + 1`,failed=`expr $failed + 1`,)
  AC_CHECK_LIB(z,inflate,passed=`expr $passed + 1`,failed=`expr $failed + 1`,)
  AC_CHECK_LIB(z,gzseek,passed=`expr $passed + 1`,failed=`expr $failed + 1`,)
  AC_CHECK_LIB(z,gztell,passed=`expr $passed + 1`,failed=`expr $failed + 1`,)
  AC_MSG_CHECKING(if ZLIB package is complete)
  if test $passed -gt 0
  then
    if test $failed -gt 0
    then
      AC_MSG_RESULT(no -- some components failed test)
      have_zlib='no (failed tests)'
    else
      LIB_ZLIB='-lz'
      LIBS="$LIB_ZLIB $LIBS"
      AC_DEFINE(HasZLIB,1,Define if you have zlib compression library)
      AC_MSG_RESULT(yes)
      have_zlib='yes'
    fi
  else
    AC_MSG_RESULT(no)
  fi
fi
AM_CONDITIONAL(HasZLIB, test "$have_zlib" = 'yes')
AC_SUBST(LIB_ZLIB)

#
# Check for TIFF
#
have_tiff='no'
LIB_TIFF=''
if test ! "$with_tiff" = 'no'
then
    AC_MSG_CHECKING(for TIFF support )
    AC_MSG_RESULT()
    failed=0;
    passed=0;
    AC_CHECK_HEADER(tiff.h,passed=`expr $passed + 1`,failed=`expr $failed + 1`)
    AC_CHECK_HEADER(tiffio.h,passed=`expr $passed + 1`,failed=`expr $failed + 1`)
    AC_CHECK_LIB(tiff,TIFFOpen,passed=`expr $passed + 1`,failed=`expr $failed + 1`,)
    AC_CHECK_LIB(tiff,TIFFClientOpen,passed=`expr $passed + 1`,failed=`expr $failed + 1`,)
    AC_CHECK_LIB(tiff,TIFFIsByteSwapped,passed=`expr $passed + 1`,failed=`expr $failed + 1`,)
    AC_MSG_CHECKING(if TIFF package is complete)
    if test $passed -gt 0
    then
    if test $failed -gt 0
    then
	AC_MSG_RESULT(no -- some components failed test)
	have_tiff='no (failed tests)'
    else
	LIB_TIFF='-ltiff'
	LIBS="$LIB_TIFF $LIBS"
	AC_DEFINE(HasTIFF,1,Define if you have TIFF library)
	AC_MSG_RESULT(yes)
	have_tiff='yes'
	AC_CHECK_HEADERS(tiffconf.h)
    fi
    else
    AC_MSG_RESULT(no)
    fi
fi
AM_CONDITIONAL(HasTIFF, test "$have_tiff" = 'yes')
AC_SUBST(LIB_TIFF)

# Libraries that the LCMS library depends on
LCMS_LIB_DEPLIBS="$LIB_MATH"
LCMS_LIB_DEPLIBS=`echo $LCMS_LIB_DEPLIBS | sed -e 's/  */ /g'`
AC_SUBST(LCMS_LIB_DEPLIBS)

# Libraries that the jpegicc program depends on
JPEGICC_DEPLIBS="$LIB_JPEG $LIB_MATH"
JPEGICC_DEPLIBS=`echo $JPEGICC_DEPLIBS | sed -e 's/  */ /g'`
AC_SUBST(JPEGICC_DEPLIBS)

# Libraries that the tifficc program depends on
TIFFICC_DEPLIBS="$LIB_TIFF $LIB_JPEG $LIB_ZLIB $LIB_MATH"
TIFFICC_DEPLIBS=`echo $TIFFICC_DEPLIBS | sed -e 's/  */ /g'`
AC_SUBST(TIFFICC_DEPLIBS)

LIBS=''

#
# Perform substitutions
#
AC_CONFIG_FILES([Makefile])
AC_CONFIG_FILES([lcms2.pc])
AC_CONFIG_FILES([include/Makefile])
AC_CONFIG_FILES([src/Makefile])
AC_CONFIG_FILES([utils/tificc/Makefile])
AC_CONFIG_FILES([utils/transicc/Makefile])
AC_CONFIG_FILES([utils/linkicc/Makefile])
AC_CONFIG_FILES([utils/jpgicc/Makefile])
AC_CONFIG_FILES([utils/psicc/Makefile])
AC_CONFIG_FILES([testbed/Makefile])
AC_OUTPUT