#
# LittleCMS 2 configure script
#

AC_PREREQ(2.60)

#
# Set the package name and version
#
AC_INIT(lcms2,2.16)

# Specify directory where m4 macros may be found.
AC_CONFIG_MACRO_DIR([m4])

#
# Libtool library revision control info
#
LIBRARY_CURRENT=2
LIBRARY_REVISION=16
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 1.9 tar-ustar no-define dist-zip subdir-objects])


# Check for programs
AC_PROG_CC
AC_PROG_CPP
AC_PROG_CXX
LT_INIT

#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)

LIB_PLUGINS=''

# 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)

# Check if the C compiler supports the "visibility" function attribute
# If supported, defines HAVE_FUNC_ATTRIBUTE_VISIBILITY
AX_GCC_FUNC_ATTRIBUTE(visibility)

# Check if the compiler supports "-fvisibility=hidden" and if yes, add it to CFLAGS
# This means that symbols that are not marked explicitly for export (CMSAPI)
# will not be reachable in the shared library.
AX_APPEND_COMPILE_FLAGS(["-fvisibility=hidden"])

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

# Check for threadsafe variants of gmtime
# Note: check for gmtime_s is a bit more complex as it is implemented as a macro
AC_CHECK_FUNCS(gmtime_r, [], [
               AC_MSG_CHECKING([for gmtime_s])
               AC_LINK_IFELSE([
                 AC_LANG_PROGRAM([[#include <time.h>]], [[
                   time_t t;
                   struct tm m;
                   gmtime_s(&m, &t);
                   return 0;
                 ]])],
                 [AC_MSG_RESULT([yes])
                  AC_DEFINE([HAVE_GMTIME_S], [1], [gmtime_s can be used])], 
                 [AC_MSG_RESULT([no])]
               )])

# Point to JPEG installed in DIR or disable JPEG with --without-jpeg.
AC_ARG_WITH(jpeg,
            AS_HELP_STRING([--with-jpeg=DIR],[use jpeg installed in DIR]),
            [
            if [ test "x$withval" = "xno" ]; then
              [with_jpeg='no']
            else
              if [ test "x$withval" != "xyes" ]; then
                with_jpeg=$withval
                JPEG_DIR=$withval
                CPPFLAGS="$CPPFLAGS -I$JPEG_DIR/include"
                LDFLAGS="$LDFLAGS -L$JPEG_DIR/lib"
              fi
              [with_jpeg='yes']
            fi
            ],
	        [with_jpeg='yes'])

# Point to TIFF installed in DIR or disable TIFF with --without-tiff.
AC_ARG_WITH(tiff,
            AS_HELP_STRING([--with-tiff=DIR], [use tiff installed in DIR]),
            [
            if [ test "x$withval" = "xno" ]; then
              [with_tiff='no']
            else
              if [ test "x$withval" != "xyes" ]; then
                with_tiff=$withval
                TIFF_DIR=$withval
                CPPFLAGS="$CPPFLAGS -I$TIFF_DIR/include"
                LDFLAGS="$LDFLAGS -L$TIFF_DIR/lib"
              fi
              [with_tiff='yes']  
            fi
            ],
	        [with_tiff='yes'])

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

#fast_float plugin:
AC_ARG_WITH(fastfloat,
            AS_HELP_STRING([--with-fastfloat],
                           [build and install fast_float plugin, use only if GPL 3.0 is acceptable]),
            [
                with_fastfloat=$withval
            ],
            [
                with_fastfloat='no'
            ])
if test "x$with_fastfloat" = "xyes"
then
            LIB_PLUGINS="$LIB_PLUGINS -llcms2_fast_float"
fi

#multi threaded plugin:
AC_ARG_WITH(threaded,
            AS_HELP_STRING([--with-threaded],
                           [build and install multi threaded plugin, use only if GPL 3.0 is acceptable]),
            [
                with_threaded=$withval
            ],
            [
                with_threaded='no'
            ])
if test "x$with_threaded" = "xyes"
then
            LIB_PLUGINS="$LIB_PLUGINS -llcms2_threaded"
fi

#
# Determine POSIX threads settings
#
# Enable support for POSIX thread APIs
AC_ARG_WITH(threads,
	      AS_HELP_STRING([--without-pthreads],
                             [disable POSIX pthreads API support]),
	      [with_threads=$withval],
	      [with_threads='yes'])

have_threads=no
if test "$with_threads" != 'no'
then

  AX_PTHREAD()
 
  if test "$ax_pthread_ok" = yes
  then
    have_threads=yes

    DEF_THREAD="$PTHREAD_CFLAGS"
    CFLAGS="$CFLAGS $DEF_THREAD"
    CXXFLAGS="$CXXFLAGS $DEF_THREAD"

    if test "$CC" != "$PTHREAD_CC"
    then
      AC_MSG_WARN([Replacing compiler $CC with compiler $PTHREAD_CC to support pthreads.])
      CC="$PTHREAD_CC"
    fi
    if test "$CXX" != "$PTHREAD_CXX"
    then
      AC_MSG_WARN([Replacing compiler $CXX with compiler $PTHREAD_CXX to support pthreads.])
      CXX="$PTHREAD_CXX"
    fi
  fi
fi

# check if compiler supports SSE2 intrinsics
AC_LANG_PUSH([C])

AC_MSG_CHECKING([whether compiler supports SSE2])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
    #include <emmintrin.h>
    int main() { __m128i n = _mm_set1_epi8(42); }]])],
  [ac_compiler_supports_sse2=yes], [ac_compiler_supports_sse2=no])
AC_MSG_RESULT([$ac_compiler_supports_sse2])
AS_IF([test "x$ac_compiler_supports_sse2" != "xyes"],
  [AC_DEFINE([CMS_DONT_USE_SSE2], [1], [Define if compiler does not support SSE2 intrinsics])])

AC_LANG_POP([C])

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

#
# Find Posix threads library
#
LIB_THREAD=''
if test "$with_threads" != 'no' && test "$have_threads" = 'yes'
then
  for lib in pthread pthreads
  do
    if test "x$PTHREAD_LIBS" = "x" ; then
      AC_CHECK_LIB([$lib],pthread_mutex_lock,[PTHREAD_LIBS=-l$lib],,)
    fi
  done

  LIB_THREAD="$PTHREAD_LIBS"
  LIBS="$LIBS $LIB_THREAD"
  AC_DEFINE(HasTHREADS,1,[Define if you have pthreads library])
else
  AC_DEFINE(HasTHREADS,0,[Define if you don't have pthreads library])
fi
AC_SUBST(LIB_THREAD)

#
# 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`,[#include <jconfig.h>])
    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 TIFF may require zlib so enable zlib check if TIFF is requested
if test ! "$with_zlib" = 'no' || test ! "$with_tiff" = '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 $LIB_THREAD"
LCMS_LIB_DEPLIBS=`echo $LCMS_LIB_DEPLIBS | sed -e 's/  */ /g'`
AC_SUBST(LCMS_LIB_DEPLIBS)

AC_SUBST(LIB_PLUGINS)

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

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

# Libraries that the testbed programs depends on
TESTBED_DEPLIBS="$LIB_MATH"
TESTBED_DEPLIBS=`echo $TESTBED_DEPLIBS | sed -e 's/  */ /g'`
AC_SUBST(TESTBED_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])
AM_CONDITIONAL([COND_FASTFLOAT], [test "x$with_fastfloat" = "xyes" ])
AM_CONDITIONAL([COND_THREADED], [test "x$with_threaded" = "xyes" ])
AC_CONFIG_FILES([plugins/Makefile])
AC_CONFIG_FILES([plugins/fast_float/Makefile])
AC_CONFIG_FILES([plugins/fast_float/src/Makefile])
AC_CONFIG_FILES([plugins/fast_float/include/Makefile])
AC_CONFIG_FILES([plugins/fast_float/testbed/Makefile])
AC_CONFIG_FILES([plugins/threaded/Makefile])
AC_CONFIG_FILES([plugins/threaded/src/Makefile])
AC_CONFIG_FILES([plugins/threaded/include/Makefile])
AC_CONFIG_FILES([plugins/threaded/testbed/Makefile])
AC_OUTPUT