configure.ac

AC_PREREQ(2.61)

m4_define([required_libxml_version], [2.6.17])
m4_define([required_lttoolbox_version], [3.6.7])

AC_INIT([apertium-separable], [0.6.0], [apertium-stuff@lists.sourceforge.net])
AM_INIT_AUTOMAKE
AC_CONFIG_MACRO_DIR([m4])

AC_PROG_CXX
AM_SANITY_CHECK
AC_LANG_CPLUSPLUS

CFLAGS="-Wall -Wextra $CFLAGS"
CXXFLAGS="-Wall -Wextra $CXXFLAGS"

AC_ARG_ENABLE(debug,
              [  --enable-debug  Enable "-g -Wall" compiler options],
              [case "${enableval}" in
                yes ) CXXFLAGS="-g -ggdb -Og";CFLAGS="-g -ggdb -Og" ;;
                no ) ;;
                * ) AC_MSG_ERROR([bad value ${enableval} for --enable-debug]) ;;
		esac])

PKG_CHECK_MODULES([LTTOOLBOX], [lttoolbox >= required_lttoolbox_version])

AC_SUBST(LTTOOLBOX_CFLAGS)
AC_SUBST(LTTOOLBOX_LIBS)

PKG_CHECK_MODULES([LIBXML], [libxml-2.0 >= required_libxml_version])

AC_SUBST(LIBXML_CFLAGS)
AC_SUBST(LIBXML_LIBS)

PKG_CHECK_MODULES([ICU], [icu-i18n, icu-io, icu-uc])

AC_SUBST(ICU_CFLAGS)
AC_SUBST(ICU_LIBS)

# Checks for libraries.
AC_CHECK_LIB(xml2, xmlReaderForFile)

AC_CHECK_HEADER([utf8.h], [], [AC_MSG_ERROR([You don't have utfcpp installed.])])

CPPFLAGS="$CPPFLAGS $CFLAGS $LTTOOLBOX_CFLAGS $LIBXML_CFLAGS $ICU_CFLAGS"
LIBS="$LIBS $LTTOOLBOX_LIBS $LIBXML_LIBS $ICU_LIBS"

# Checks for highest supported C++ standard
AC_LANG(C++)
for version in 23 2b 20 2a 17 1z 14 1y; do
  version_flag="-std=c++${version}"
  AX_CHECK_COMPILE_FLAG([${version_flag}], [break], [version_flag=none])
done
AS_IF([test "$version_flag" == none], [
  AC_MSG_ERROR([Could not enable at least C++1y (C++14) - upgrade your compiler])
])
CXXFLAGS="$CXXFLAGS ${version_flag}"

AC_CONFIG_FILES([
                 apertium-separable.pc
                 Makefile
                 src/Makefile
                 ])
AC_OUTPUT