configure.ac

# Autoconf Settings
# Copyright (C) 2007-2019 kaoru
# $Id$

#### General ####
AC_PREREQ([2.69])
AC_INIT([Tetengo2], [0.0.0], [kaorut@mc.pikara.ne.jp])
AM_INIT_AUTOMAKE([gnu dist-bzip2 dist-zip --warnings=no-portability])
AC_CONFIG_SRCDIR([tetengo2_config.h-original])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_FILES([
    Makefile
    docsrc/Makefile
    precompiled/Makefile
    tetengo2/Makefile
    tetengo2/include/Makefile
    tetengo2/include/tetengo2/Makefile
    tetengo2/res.test/Makefile
    tetengo2/src/Makefile
    tetengo2/test/Makefile
    tetengo2_detail/Makefile
    tetengo2_detail/include/Makefile
    tetengo2_detail/include/tetengo2/Makefile
    tetengo2_detail/src/Makefile
    tetengo2_gui/Makefile
    tetengo2_gui/include/Makefile
    tetengo2_gui/include/tetengo2/Makefile
    tetengo2_gui/src/Makefile
    tetengo2_gui/test/Makefile
    tools/Makefile
    vsprops/Makefile
])

AC_LANG([C++])
AX_CXX_COMPILE_STDCXX_14([noext], [mandatory])
#AX_CXX_COMPILE_STDCXX_17([noext], [mandatory]) # This one is preferable, but...

AC_ARG_ENABLE(
    precompilation,
    AS_HELP_STRING(
        [--enable-precompilation=EXT],
        [
            enables precompilation.
            When EXT given, it will be used for the extension of the precompiled header file.
            Otherwise, `gch' is used for the extension of the precompiled header file.
        ]
    ),
    test "X$enableval" = "Xyes" && PRECOMPILE_EXT="gch";
    test "X$enableval" = "Xyes" || PRECOMPILE_EXT=$enableval;
    PRECOMPILE_CPPFLAGS=" -I\$(top_builddir)/precompiled -I\$(top_srcdir)/precompiled -include precompiled.h";
    PRECOMPILE_BUILT_SOURCES="\$(top_builddir)/precompiled/precompiled.h.$PRECOMPILE_EXT"
)
AC_SUBST([PRECOMPILE_EXT])
AC_SUBST([PRECOMPILE_CPPFLAGS])
AC_SUBST([PRECOMPILE_BUILT_SOURCES])

#### Checks for programs ####
AC_PROG_CXX
AC_PROG_CC
AC_PROG_CPP
AC_PROG_RANLIB

AC_ARG_WITH(
    iwyu,
    AS_HELP_STRING(
        [--with-iwyu=COMMAND], [Specify the include-what-you-use command. Or uses `include-what-you-use'.]
    ),
    IWYU=$withval
)
AC_CHECK_PROG(IWYU, include-what-you-use, include-what-you-use)
test -z $IWYU && \
    AC_MSG_ERROR([You cannot check the includes for lack of include-what-you-use.])
AC_SUBST([IWYU_OPTS], "-Xiwyu --max_line_length=1024 -x c++ -std=c++17 -DIWYU")
AC_SUBST([IWYU_IMP_PATH], "tools/iwyu_mappings.imp")

AC_ARG_WITH(
    unix2dos,
    AS_HELP_STRING(
        [--with-unix2dos=COMMAND], [Specify the unix2dos command. Or uses `unix2dos'.]
    ),
    UNIX2DOS=$withval
)
AC_CHECK_PROG(UNIX2DOS, unix2dos, unix2dos)
AC_ARG_WITH(
    clang-format,
    AS_HELP_STRING(
        [--with-clang-format=COMMAND], [Specify the clang-format command. Or uses `clang-format'.]
    ),
    CLANGFORMAT=$withval
)
AC_CHECK_PROG(CLANGFORMAT, clang-format, clang-format)
(test -z $UNIX2DOS || test -z $CLANGFORMAT) && \
    AC_MSG_ERROR([You cannot format the source files for lack of unix2dos and/or clang-format.])

AC_ARG_WITH(
    doxygen,
    AS_HELP_STRING([--with-doxygen=COMMAND], [Specify the Doxygen command. Or uses `doxygen'.]),
    DOXYGEN=$withval
)
AC_CHECK_PROG(DOXYGEN, doxygen, doxygen)
test -z $DOXYGEN && \
    AC_MSG_ERROR([You cannot generate documents for lack of Doxygen.])

#### Checks for libraries ####
AC_CHECK_FUNC(sem_open, , [AC_CHECK_LIB(rt, sem_open)])
AC_CHECK_LIB(pthread, pthread_cancel)
AC_CHECK_LIB(bz2, BZ2_bzCompressInit)
AC_CHECK_FUNC(iconv, , [AC_CHECK_LIB(iconv, libiconv)])

AX_BOOST_BASE([1.69.0])
AX_BOOST_UNIT_TEST_FRAMEWORK
AC_SUBST([LDFLAGS], "$LDFLAGS $BOOST_LDFLAGS")
AC_SUBST([UNITTEST_LIBS], "$BOOST_UNIT_TEST_FRAMEWORK_LIB")

AC_SUBST([LIBS], "$LIBS -lstdc++fs -lstdc++")

#### Checks for header files ####
AC_CXX_HAVE_STD
AC_CXX_HAVE_STL
AC_HEADER_STDC
AC_SUBST([CPPFLAGS], "$CPPFLAGS $PRECOMPILE_CPPFLAGS")
AC_SUBST([CPPFLAGS], "$CPPFLAGS $BOOST_CPPFLAGS")

#### Checks for typedefs, structures, and compiler characteristics ####
AC_SUBST([CXXFLAGS], "$CXXFLAGS -Werror -Wall -Wextra -pedantic-errors")
AC_SUBST([CXXFLAGS], "$CXXFLAGS -std=c++1z") # Remove this line when AX_CXX_COMPILE_STDCXX_17 gets enabled.

#### Checks for library functions ####

#### Output ####
AC_OUTPUT