# get rid of that stupid cache mechanism
rm -f config.cache

AC_INIT([eet], [1.2.3], [enlightenment-devel@lists.sourceforge.net])
AC_PREREQ([2.52])
AC_CONFIG_SRCDIR([configure.ac])
AC_CONFIG_MACRO_DIR([m4])
AC_CANONICAL_BUILD
AC_CANONICAL_HOST
AC_ISC_POSIX

AM_INIT_AUTOMAKE([1.6 dist-bzip2])
AM_CONFIG_HEADER([config.h])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])

AC_LIBTOOL_WIN32_DLL
define([AC_LIBTOOL_LANG_CXX_CONFIG], [:])dnl
define([AC_LIBTOOL_LANG_F77_CONFIG], [:])dnl
AC_PROG_LIBTOOL

VMAJ=`echo $PACKAGE_VERSION | awk -F. '{printf("%s", $1);}'`
VMIN=`echo $PACKAGE_VERSION | awk -F. '{printf("%s", $2);}'`
VMIC=`echo $PACKAGE_VERSION | awk -F. '{printf("%s", $3);}'`
SNAP=`echo $PACKAGE_VERSION | awk -F. '{printf("%s", $4);}'`
version_info=`expr $VMAJ + $VMIN`":$VMIC:$VMIN"
#release="ver-pre-svn-00"
#release_info="-release $release"
release_info=""
AC_SUBST(version_info)
AC_SUBST(release_info)

### Default options with respect to host

case "$host_os" in
   mingw* | cegcc*)
      want_gnutls="no"
      want_openssl="no"
      want_cipher="no"
      want_signature="no"
      ;;
   *)
      want_gnutls="auto"
      want_openssl="auto"
      want_cipher="yes"
      want_signature="yes"
      ;;
esac

requirement_eet=""


### Additional options to configure

# Amalgamation

AC_ARG_ENABLE([amalgamation],
   [AC_HELP_STRING([--enable-amalgamation], [enable generation of one single file with all source code in it, helps compiler optimizations.])],
   [if test "x${enableval}" = "xyes"; then
       do_amalgamation="yes"
    else
       do_amalgamation="no"
    fi
   ],
   [do_amalgamation="no"]
)
AM_CONDITIONAL(EET_AMALGAMATION, test "x${do_amalgamation}" = "xyes")

# Old eet file format support

old_eet_file_format="yes"
AC_ARG_ENABLE(old-eet-file-format,
   [AC_HELP_STRING(
      [--disable-old-eet-file-format],
      [disable old eet file format support. [[default=enabled]]]
    )],
   [old_eet_file_format=$enableval]
)
AC_MSG_CHECKING([whether to support old eet file format])
AC_MSG_RESULT([${old_eet_file_format}])

if test "x${old_eet_file_format}" = "xyes" ; then
   AC_DEFINE(EET_OLD_EET_FILE_FORMAT, 1, [support old eet file format])
else
   AC_DEFINE(EET_OLD_EET_FILE_FORMAT, 0, [support old eet file format])
fi

# Gnutls support

AC_ARG_ENABLE([gnutls],
   [AC_HELP_STRING([--disable-gnutls], [disable gnutls eet support])],
   [want_gnutls=$enableval]
)
AC_MSG_CHECKING([whether to use Gnutls])
AC_MSG_RESULT([${want_gnutls}])

# Specific GNUTLS improvement

new_gnutls_api="no"
AC_ARG_ENABLE(new-gnutls-api,
   [AC_HELP_STRING(
      [--enable-new-gnutls-api],
      [enable use of gnutls_x509_crt_verify_hash. [[default=disable]]]
    )],
   [new_gnutls_api=$enableval]
)
AC_MSG_CHECKING([whether to use gnutls_x509_crt_verify_hash])
AC_MSG_RESULT([${new_gnutls_api}])

if test "x${new_gnutls_api}" = "xyes" ; then
   AC_DEFINE(EET_USE_NEW_GNUTLS_API, 1, [use gnutls_x509_crt_verify_hash])
else
   AC_DEFINE(EET_USE_NEW_GNUTLS_API, 0, [don't use gnutls_x509_crt_verify_hash])
fi

# Openssl support

AC_ARG_ENABLE([openssl],
   [AC_HELP_STRING([--disable-openssl], [disable openssl eet support])],
   [want_openssl=$enableval]
)
AC_MSG_CHECKING([whether to use OpenSSL])
AC_MSG_RESULT([${want_openssl}])

# Cryptography support

AC_ARG_ENABLE([cipher],
   [AC_HELP_STRING([--disable-cipher], [disable cipher support for eet API])],
   [want_cipher=$enableval]
)
AC_MSG_CHECKING([whether to use cipher])
AC_MSG_RESULT([${want_cipher}])

AC_ARG_ENABLE([signature],
   [AC_HELP_STRING([--disable-signature], [disable signature file support for eet])],
   [want_signature=$enableval]
)
AC_MSG_CHECKING([whether to use signature])
AC_MSG_RESULT([${want_signature}])

# Assert or fail.
prefer_assert="no"
AC_ARG_ENABLE([assert],
   [AC_HELP_STRING([--enable-assert], [enable assert, [[default=disabled]]])],
   [prefer_assert=$enableval]
)

# Unit tests, coverage and benchmarking

EFL_CHECK_TESTS([enable_tests="yes"], [enable_tests="no"])
EFL_CHECK_COVERAGE([${enable_tests}], [enable_coverage="yes"], [enable_coverage="no"])

if test "x${prefer_assert}" = "xno"; then
   DEBUG_CFLAGS="-DNDEBUG"
else
# use debug symbols and set DEBUG if coverage support is enabled
   DEBUG_CFLAGS="${EFL_DEBUG_CFLAGS}"
fi
AC_SUBST(DEBUG_CFLAGS)


### Checks for programs
AC_PROG_CC

# pkg-config
PKG_PROG_PKG_CONFIG

# Check whether pkg-config supports Requires.private
if $PKG_CONFIG --atleast-pkgconfig-version 0.22; then
   pkgconfig_requires_private="Requires.private"
else
   pkgconfig_requires_private="Requires"
fi
AC_SUBST(pkgconfig_requires_private)


# doxygen program for documentation building

EFL_CHECK_DOXYGEN([build_doc="yes"], [build_doc="no"])

### Checks for libraries

# Evil library for compilation on Windows

EFL_EET_BUILD=""
case "$host_os" in
   mingw* | cegcc*)
      PKG_CHECK_MODULES([EVIL], [evil])
      AC_DEFINE(HAVE_EVIL, 1, [Set to 1 if Evil library is installed])
      requirement_eet="evil ${requirement_eet}"
      EFL_EET_BUILD="-DEFL_EET_BUILD"
   ;;
esac
AC_SUBST(EFL_EET_BUILD)

EET_LIBS=""
case "$host_os" in
   mingw32ce*)
      EET_LIBS="-lws2"
      ;;
   cegcc*)
      EET_LIBS="-lws2"
      ;;
   mingw*)
      EET_LIBS="-lws2_32"
      ;;
esac
AC_SUBST(EET_LIBS)

# Eina library

PKG_CHECK_MODULES(EINA, [eina-0])
requirement_eet="eina-0 ${requirement_eet}"

# Gnutls library
have_gnutls="no"
if test "x${want_gnutls}" = "xyes" -o "x${want_gnutls}" = "xauto" ; then
   PKG_CHECK_MODULES(GNUTLS, [gnutls >= 1.7.6],
      [
       have_gnutls="yes"
       want_openssl="no"
       AC_DEFINE(HAVE_GNUTLS, 1, [Have Gnutls support])
       requirement_eet="gnutls ${requirement_eet}"
      ],
      [have_gnutls="no"])
   if test "x${have_gnutls}" = "xyes" ; then
      AC_PATH_GENERIC([libgcrypt], [], [have_gnutls="yes"], [have_gnutls="no"])
      if test "x${have_gnutls}" = "xyes" ; then
         GNUTLS_CFLAGS="${GNUTLS_CFLAGS} ${LIBGCRYPT_CFLAGS}"
         GNUTLS_LIBS="${GNUTLS_LIBS} ${LIBGCRYPT_LIBS}"
      fi
   fi
fi

# Openssl library
have_openssl="no"
if test "x${want_openssl}" = "xyes" -o "x${want_openssl}" = "xauto" ; then
   PKG_CHECK_MODULES(OPENSSL, openssl,
      [
       have_openssl="yes"
       AC_DEFINE(HAVE_OPENSSL, 1, [Have Openssl support])
       requirement_eet="openssl ${requirement_eet}"
      ],
      [have_openssl="no"])
fi

have_cipher="no"
if test "x${have_gnutls}" = "xyes" -a "x${want_cipher}" = "xyes" ; then
   have_cipher="yes"
   AC_DEFINE(HAVE_CIPHER, 1, [Have cipher support built in eet])
elif test "x${have_openssl}" = "xyes" -a "x${want_cipher}" = "xyes" ; then
   have_cipher="yes"
   AC_DEFINE(HAVE_CIPHER, 1, [Have cipher support built in eet])
fi

AC_MSG_CHECKING(whether to activate cipher support in eet)
AC_MSG_RESULT(${have_cipher})

have_signature="no"
if test "x${have_gnutls}" = "xyes" -a "x${want_signature}" = "xyes" ; then
   have_signature="yes"
   AC_DEFINE(HAVE_SIGNATURE, 1, [Have signature support for eet file])
elif test "x${have_openssl}" = "xyes" -a "x${want_signature}" = "xyes" ; then
   have_signature="yes"
   AC_DEFINE(HAVE_SIGNATURE, 1, [Have signature support for eet file])
fi

AC_MSG_CHECKING(whether to activate signature support in eet)
AC_MSG_RESULT(${have_signature})

# pthread library

EFL_CHECK_PTHREAD([have_pthread="yes"], [have_pthread="no"])


### Checks for header files

AC_CHECK_HEADER([zlib.h],
   [dummy="yes"],
   [AC_MSG_ERROR("Cannot find zlib.h. Make sure your CFLAGS environment variable contains include lines for the location of this file")])

AC_CHECK_HEADER([jpeglib.h],
   [dummy="yes"],
   [AC_MSG_ERROR("Cannot find jpeglib.h. Make sure your CFLAGS environment variable contains include lines for the location of this file")])

AC_CHECK_HEADERS(netinet/in.h)

AC_CHECK_HEADER([fnmatch.h],
   [dummy="yes"],
   [AC_MSG_ERROR([Cannot find fnmatch.h. Make sure your CFLAGS environment variable contains include lines for the location of this file. MinGW users: see the INSTALL file])])


### Checks for types


### Checks for structures


### Checks for compiler characteristics
AM_PROG_CC_C_O
AC_C_CONST
AC_C_INLINE
AC_PROG_CC_STDC
AC_C___ATTRIBUTE__

# Check whether the null pointer is zero on this arch
AC_TRY_RUN(
   [
#include <stdlib.h>
int main (int argc, char **argv) {
  void *foo = NULL;
  int bar = (int)foo;
  return (int)foo;
}
   ],
   [have_null="yes"],
   [have_null="no"],
   [
    AC_MSG_WARN([Cannot check when cross-compiling -- assuming null is okay])
    have_null="yes"
   ])
AC_MSG_CHECKING([value of the null pointer])
AC_MSG_RESULT([${have_null}])

if test ! "x${have_null}" = "xyes" ; then
   AC_MSG_WARN([Your system is a bit too funny, eet might not work properly])
fi

# These are needed for fmemopen/open_memstream
AC_DEFINE(_GNU_SOURCE, , [Enable GNU extensions])

EET_CPPFLAGS=""
EET_CFLAGS=""
case "$host_os" in
   mingw32ce*)
      EET_CPPFLAGS="-D_WIN32_WCE=0x0420"
      ;;
   cegcc*)
      EET_CPPFLAGS="-D_WIN32_WCE=0x0420"
      EET_CFLAGS="-mwin32"
      ;;
   mingw*)
      EET_CPPFLAGS="-D_WIN32_WINNT=0x0500"
      ;;
esac
AC_SUBST(EET_CPPFLAGS)
AC_SUBST(EET_CFLAGS)


### Checks for linker characteristics

# use --enable-auto-import on Windows

lt_enable_auto_import=""
case "$host_os" in
   mingw* | cegcc*)
      lt_enable_auto_import="-Wl,--enable-auto-import"
      ;;
esac
AC_SUBST(lt_enable_auto_import)

# use --as-needed if supported

LDFLAGS_SAVE=${LDFLAGS}
LDFLAGS="${LDFLAGS} -Wl,--as-needed"

AC_LINK_IFELSE(
   [AC_LANG_PROGRAM([[]], [])],
   [ld_as_needed="-Wl,--as-needed"],
   [ld_as_needed=""]
)

LDFLAGS=${LDFLAGS_SAVE}
AC_SUBST(ld_as_needed)


### Checks for library functions
AC_FUNC_ALLOCA

AC_CHECK_FUNCS(fmemopen open_memstream realpath)

fnmatch_libs=""
AC_CHECK_FUNCS([fnmatch], [res="yes"], [res="no"])
if test "x$res" = "xno"; then
   AC_SEARCH_LIBS([fnmatch],
      [fnmatch evil iberty],
      [res="yes"],
      [res="no"])
   if test "x$res" = "xno"; then
      AC_MSG_ERROR([Cannot find fnmatch() in neither libc nor libfnmatch, nor libiberty, nor libevil])
   fi
   fnmatch_libs="${ac_cv_search_fnmatch}"
fi
AC_SUBST(fnmatch_libs)


AC_SUBST(requirement_eet)

AC_OUTPUT([
Makefile
eet.pc
doc/Makefile
doc/eet.dox
src/Makefile
src/lib/Makefile
src/bin/Makefile
src/tests/Makefile
README
eet.spec
])


#####################################################################
## Info

echo
echo
echo
echo "------------------------------------------------------------------------"
echo "$PACKAGE_NAME $PACKAGE_VERSION"
echo "------------------------------------------------------------------------"
echo
echo "Configuration Options Summary:"
echo
echo "  Gnutls...............: ${have_gnutls}"
echo "  Openssl..............: ${have_openssl}"
echo "    Cipher support.....: ${have_cipher}"
echo "    Signature..........: ${have_signature}"
echo "  Thread Support.......: ${have_pthread}"
echo
echo "  Amalgamation.........: ${do_amalgamation}"
echo "  Documentation........: ${build_doc}"
echo "  Tests................: ${enable_tests}"
echo "  Coverage.............: ${enable_coverage}"
echo
echo "  Old eet file format..: ${old_eet_file_format}"
echo
echo "  Compilation..........: make"
echo
echo "  Installation.........: make install"
echo
echo "    prefix.............: $prefix"
echo