[packages/bakefile.git] / bakefile-0.1.4.m4

dnl ---------------------------------------------------------------------------
dnl Support macros for makefiles generated by BAKEFILE.
dnl ---------------------------------------------------------------------------

dnl Lots of compiler & linker detection code contained here was taken from
dnl wxWindows configure.in script (see http://www.wxwindows.org)


dnl ---------------------------------------------------------------------------
dnl AC_BAKEFILE_GNUMAKE
dnl
dnl Detects GNU make
dnl ---------------------------------------------------------------------------

AC_DEFUN([AC_BAKEFILE_GNUMAKE],
[
    dnl does make support "-include" (only GNU make does AFAIK)?
    AC_CACHE_CHECK([if make is GNU make], bakefile_cv_prog_makeisgnu,
    [
        if ( ${SHELL-sh} -c "${MAKE-make} --version" 2> /dev/null |
                egrep -s GNU > /dev/null); then
            bakefile_cv_prog_makeisgnu="yes"
        else
            bakefile_cv_prog_makeisgnu="no"
        fi
    ])

    if test "x$bakefile_cv_prog_makeisgnu" = "xyes"; then
        IF_GNU_MAKE=""
    else
        IF_GNU_MAKE="#"
    fi
    AC_SUBST(IF_GNU_MAKE)
])

dnl ---------------------------------------------------------------------------
dnl AC_BAKEFILE_PLATFORM
dnl
dnl Detects platform and sets PLATFORM_XXX variables accordingly
dnl ---------------------------------------------------------------------------

AC_DEFUN([AC_BAKEFILE_PLATFORM],
[
    PLATFORM_UNIX=0
    PLATFORM_WIN32=0
    PLATFORM_MSDOS=0
    PLATFORM_MAC=0
    PLATFORM_MACOS=0
    PLATFORM_MACOSX=0
    PLATFORM_OS2=0
    PLATFORM_BEOS=0

    if test "x$BAKEFILE_FORCE_PLATFORM" = "x"; then 
        case "${BAKEFILE_HOST}" in
            *-*-cygwin* | *-*-mingw32* )
                PLATFORM_WIN32=1
            ;;
            *-pc-msdosdjgpp )
                PLATFORM_MSDOS=1
            ;;
            *-pc-os2_emx | *-pc-os2-emx )
                PLATFORM_OS2=1
            ;;
            powerpc-*-darwin* )
                PLATFORM_MAC=1
                PLATFORM_MACOSX=1
            ;; 
            *-*-beos* )
                PLATFORM_BEOS=1
            ;;
            powerpc-apple-macos* )
                PLATFORM_MAC=1
                PLATFORM_MACOS=1
            ;;
            * )
                PLATFORM_UNIX=1
            ;;
        esac
    else
        case "$BAKEFILE_FORCE_PLATFORM" in
            win32 )
                PLATFORM_WIN32=1
            ;;
            msdos )
                PLATFORM_MSDOS=1
            ;;
            os2 )
                PLATFORM_OS2=1
            ;;
            darwin )
                PLATFORM_MAC=1
                PLATFORM_MACOSX=1
            ;;
            unix )
                PLATFORM_UNIX=1
            ;;
            beos )
                PLATFORM_BEOS=1
            ;;
            * )
                AC_MSG_ERROR([Unknown platform: $BAKEFILE_FORCE_PLATFORM])
            ;;
        esac
    fi

    AC_SUBST(PLATFORM_UNIX)
    AC_SUBST(PLATFORM_WIN32)
    AC_SUBST(PLATFORM_MSDOS)
    AC_SUBST(PLATFORM_MAC)
    AC_SUBST(PLATFORM_MACOS)
    AC_SUBST(PLATFORM_MACOSX)
    AC_SUBST(PLATFORM_OS2)
    AC_SUBST(PLATFORM_BEOS)
])


dnl ---------------------------------------------------------------------------
dnl AC_BAKEFILE_PLATFORM_SPECIFICS
dnl
dnl Sets misc platform-specific settings
dnl ---------------------------------------------------------------------------

AC_DEFUN([AC_BAKEFILE_PLATFORM_SPECIFICS],
[
    AC_ARG_ENABLE([omf], AS_HELP_STRING([--enable-omf],
                                        [use OMF object format (OS/2)]),
                  [bk_os2_use_omf="$enableval"])
    
    case "${BAKEFILE_HOST}" in
      *-*-darwin* )
        dnl For Unix to MacOS X porting instructions, see:
        dnl http://fink.sourceforge.net/doc/porting/porting.html
        CFLAGS="$CFLAGS -fno-common"
        CXXFLAGS="$CXXFLAGS -fno-common"
        ;;

      *-pc-os2_emx | *-pc-os2-emx )
        if test "x$bk_os2_use_omf" = "xyes" ; then
            AR=emxomfar
            RANLIB=:
            LDFLAGS="-Zomf $LDFLAGS"
            CFLAGS="-Zomf $CFLAGS"
            CXXFLAGS="-Zomf $CXXFLAGS"
            OS2_LIBEXT="lib"
        else
            OS2_LIBEXT="a"
        fi
        ;;
      
      i*86-*-beos* )
        LDFLAGS="-L/boot/develop/lib/x86 $LDFLAGS"
        ;;
    esac
])

dnl ---------------------------------------------------------------------------
dnl AC_BAKEFILE_SUFFIXES
dnl
dnl Detects shared various suffixes for shared libraries, libraries, programs,
dnl plugins etc.
dnl ---------------------------------------------------------------------------

AC_DEFUN([AC_BAKEFILE_SUFFIXES],
[
    SO_SUFFIX="so"
    SO_SUFFIX_MODULE="so"
    EXEEXT=""
    LIBPREFIX="lib"
    LIBEXT=".a"
    DLLPREFIX="lib"
    DLLPREFIX_MODULE=""
    DLLIMP_SUFFIX=""
    
    case "${BAKEFILE_HOST}" in
        *-hp-hpux* )
            SO_SUFFIX="sl"
            SO_SUFFIX_MODULE="sl"
        ;;
        *-*-aix* )
            dnl quoting from
            dnl http://www-1.ibm.com/servers/esdd/articles/gnu.html:
            dnl     Both archive libraries and shared libraries on AIX have an
            dnl     .a extension. This will explain why you can't link with an
            dnl     .so and why it works with the name changed to .a.
            SO_SUFFIX="a"
            SO_SUFFIX_MODULE="a"
        ;;
        *-*-cygwin* | *-*-mingw32* )
            SO_SUFFIX="dll"
            SO_SUFFIX_MODULE="dll"
            DLLIMP_SUFFIX="dll.a"
            EXEEXT=".exe"
            DLLPREFIX=""
        ;;
        *-pc-msdosdjgpp )
            EXEEXT=".exe"
            DLLPREFIX=""
        ;;
        *-pc-os2_emx | *-pc-os2-emx )
            SO_SUFFIX="dll"
            SO_SUFFIX_MODULE="dll"
            DLLIMP_SUFFIX=$OS2_LIBEXT
            EXEEXT=".exe"
            DLLPREFIX=""
            LIBPREFIX=""
            LIBEXT=".$OS2_LIBEXT"
        ;;
        powerpc-*-darwin* )
            SO_SUFFIX="dylib"
            SO_SUFFIX_MODULE="bundle"
        ;;
    esac

    if test "x$DLLIMP_SUFFIX" = "x" ; then
        DLLIMP_SUFFIX="$SO_SUFFIX"
    fi

    AC_SUBST(SO_SUFFIX)
    AC_SUBST(SO_SUFFIX_MODULE)
    AC_SUBST(DLLIMP_SUFFIX)
    AC_SUBST(EXEEXT)
    AC_SUBST(LIBPREFIX)
    AC_SUBST(LIBEXT)
    AC_SUBST(DLLPREFIX)
    AC_SUBST(DLLPREFIX_MODULE)
])


dnl ---------------------------------------------------------------------------
dnl AC_BAKEFILE_SHARED_LD
dnl
dnl Detects command for making shared libraries, substitutes SHARED_LD_CC
dnl and SHARED_LD_CXX.
dnl ---------------------------------------------------------------------------

AC_DEFUN([AC_BAKEFILE_SHARED_LD],
[
    dnl the extra compiler flags needed for compilation of shared library
    PIC_FLAG=""
    if test "x$GCC" = "xyes"; then
        dnl the switch for gcc is the same under all platforms
        PIC_FLAG="-fPIC"
    fi
    
    dnl Defaults for GCC and ELF .so shared libs:
    SHARED_LD_CC="\$(CC) -shared ${PIC_FLAG} -o"
    SHARED_LD_CXX="\$(CXX) -shared ${PIC_FLAG} -o"

    case "${BAKEFILE_HOST}" in
      *-hp-hpux* )
        dnl default settings are good for gcc but not for the native HP-UX
        if test "x$GCC" != "xyes"; then
            dnl no idea why it wants it, but it does
            LDFLAGS="$LDFLAGS -L/usr/lib"

            SHARED_LD_CC="${CC} -b -o"
            SHARED_LD_CXX="${CXX} -b -o"
            PIC_FLAG="+Z"
        fi
      ;;

      *-*-linux* )
        if test "x$GCC" != "xyes"; then
            AC_CACHE_CHECK([for Intel compiler], bakefile_cv_prog_icc,
            [
                AC_TRY_COMPILE([],
                    [
                        #ifndef __INTEL_COMPILER
                        #error Not icc
                        #endif
                    ],
                    bakefile_cv_prog_icc=yes,
                    bakefile_cv_prog_icc=no
                )
            ])
            if test "$bakefile_cv_prog_icc" = "yes"; then
                PIC_FLAG="-KPIC"
            fi
        fi
      ;;

      *-*-solaris2* )
        if test "x$GCC" != xyes ; then
            SHARED_LD_CC="${CC} -G -o"
            SHARED_LD_CXX="${CXX} -G -o"
            PIC_FLAG="-KPIC"
        fi
      ;;

      *-*-darwin* )
        dnl Most apps benefit from being fully binded (its faster and static
        dnl variables initialized at startup work).
        dnl This can be done either with the exe linker flag -Wl,-bind_at_load
        dnl or with a double stage link in order to create a single module
        dnl "-init _wxWindowsDylibInit" not useful with lazy linking solved

        dnl If using newer dev tools then there is a -single_module flag that
        dnl we can use to do this, otherwise we'll need to use a helper
        dnl script.  Check the version of gcc to see which way we can go:
        AC_CACHE_CHECK([for gcc 3.1 or later], wx_cv_gcc31, [
           AC_TRY_COMPILE([],
               [
                   #if (__GNUC__ < 3) || \
                       ((__GNUC__ == 3) && (__GNUC_MINOR__ < 1))
                       #error old gcc
                   #endif
               ],
               [
                   wx_cv_gcc31=yes
               ],
               [
                   wx_cv_gcc31=no
               ]
           )
        ])
        if test "$wx_cv_gcc31" = "no"; then
            AC_BAKEFILE_CREATE_FILE_SHARED_LD_SH
            chmod +x shared-ld-sh

            dnl Use the shared-ld-sh helper script
            SHARED_LD_CC="`pwd`/shared-ld-sh -dynamiclib -headerpad_max_install_names -o"
            SHARED_LD_MODULE_CC="`pwd`/shared-ld-sh -bundle -headerpad_max_install_names -o"
            SHARED_LD_CXX="$SHARED_LD_CC"
            SHARED_LD_MODULE_CXX="$SHARED_LD_MODULE_CC"
        else
            dnl Use the -single_module flag and let the linker do it for us
            SHARED_LD_CC="\${CC} -dynamiclib -single_module -headerpad_max_install_names -o"
            SHARED_LD_MODULE_CC="\${CC} -bundle -single_module -headerpad_max_install_names -o"
            SHARED_LD_CXX="\${CXX} -dynamiclib -single_module -headerpad_max_install_names -o"
            SHARED_LD_MODULE_CXX="\${CXX} -bundle -single_module -headerpad_max_install_names -o"
        fi

        PIC_FLAG="-dynamic -fPIC"
      ;;

      *-*-aix* )
        dnl default settings are ok for gcc
        if test "x$GCC" != "xyes"; then
            dnl the abs path below used to be hardcoded here so I guess it must
            dnl be some sort of standard location under AIX?
            AC_CHECK_PROG(AIX_CXX_LD, makeC++SharedLib,
                          makeC++SharedLib, /usr/lpp/xlC/bin/makeC++SharedLib)
            dnl FIXME - what about makeCSharedLib?            
            SHARED_LD_CC="$AIX_CC_LD -p 0 -o"
            SHARED_LD_CXX="$AIX_CXX_LD -p 0 -o"
        fi
      ;;

      *-*-beos* )
        dnl can't use gcc under BeOS for shared library creation because it
        dnl complains about missing 'main'
        SHARED_LD_CC="${LD} -nostart -o"
        SHARED_LD_CXX="${LD} -nostart -o"
      ;;

      *-*-irix* )
        dnl default settings are ok for gcc
        if test "x$GCC" != "xyes"; then
            PIC_FLAG="-KPIC"
        fi
      ;;
      
      *-*-cygwin* | *-*-mingw32* )
        PIC_FLAG=""
        SHARED_LD_CC="\$(CC) -shared -o"
        SHARED_LD_CXX="\$(CXX) -shared -o"
      ;;

      *-pc-os2_emx | *-pc-os2-emx )
        SHARED_LD_CC="`pwd`/dllar.sh -libf INITINSTANCE -libf TERMINSTANCE -o"
        SHARED_LD_CXX="`pwd`/dllar.sh -libf INITINSTANCE -libf TERMINSTANCE -o"
        PIC_FLAG=""
        AC_BAKEFILE_CREATE_FILE_DLLAR_SH
        chmod +x dllar.sh
      ;;
      
      powerpc-apple-macos* | \
      *-*-freebsd* | *-*-openbsd* | *-*-netbsd* | \
      *-*-sunos4* | \
      *-*-osf* | \
      *-*-dgux5* | \
      *-*-sysv5* )
        dnl defaults are ok
      ;;

      *)
        AC_MSG_ERROR(unknown system type $BAKEFILE_HOST.)
    esac

    if test "x$PIC_FLAG" != "x" ; then
        PIC_FLAG="$PIC_FLAG -DPIC"
    fi

    if test "x$SHARED_LD_MODULE_CC" = "x" ; then
        SHARED_LD_MODULE_CC="$SHARED_LD_CC"
    fi
    if test "x$SHARED_LD_MODULE_CXX" = "x" ; then
        SHARED_LD_MODULE_CXX="$SHARED_LD_CXX"
    fi

    AC_SUBST(SHARED_LD_CC)
    AC_SUBST(SHARED_LD_CXX)
    AC_SUBST(SHARED_LD_MODULE_CC)
    AC_SUBST(SHARED_LD_MODULE_CXX)
    AC_SUBST(PIC_FLAG)
])


dnl ---------------------------------------------------------------------------
dnl AC_BAKEFILE_SHARED_VERSIONS
dnl
dnl Detects linker options for attaching versions (sonames) to shared  libs.
dnl ---------------------------------------------------------------------------

AC_DEFUN([AC_BAKEFILE_SHARED_VERSIONS],
[
    USE_SOVERSION=0
    USE_SOVERLINUX=0
    USE_SOVERSOLARIS=0
    USE_SOSYMLINKS=0
    USE_MACVERSION=0
    SONAME_FLAG=

    case "${BAKEFILE_HOST}" in
      *-*-linux* | *-*-freebsd* )
        SONAME_FLAG="-Wl,-soname,"
        USE_SOVERSION=1
        USE_SOVERLINUX=1
        USE_SOSYMLINKS=1
      ;;

      *-*-solaris2* )
        SONAME_FLAG="-h "
        USE_SOVERSION=1
        USE_SOVERSOLARIS=1
        USE_SOSYMLINKS=1
      ;;

      *-*-darwin* )
        USE_MACVERSION=1
        USE_SOVERSION=1
        USE_SOSYMLINKS=1
      ;;      
    esac

    AC_SUBST(USE_SOVERSION)
    AC_SUBST(USE_SOVERLINUX)
    AC_SUBST(USE_SOVERSOLARIS)
    AC_SUBST(USE_MACVERSION)
    AC_SUBST(USE_SOSYMLINKS)
    AC_SUBST(SONAME_FLAG)
])


dnl ---------------------------------------------------------------------------
dnl AC_BAKEFILE_DEPS
dnl
dnl Detects available C/C++ dependency tracking options
dnl ---------------------------------------------------------------------------

AC_DEFUN([AC_BAKEFILE_DEPS],
[
    AC_MSG_CHECKING([for dependency tracking method])
    DEPS_TRACKING=0

    if test "x$GCC" = "xyes"; then
        DEPSMODE=gcc
        DEPS_TRACKING=1
        case "${BAKEFILE_HOST}" in
            powerpc-*-darwin* )
                dnl -cpp-precomp (the default) conflicts with -MMD option
                dnl used by bk-deps (see also http://developer.apple.com/documentation/Darwin/Conceptual/PortingUnix/compiling/chapter_4_section_3.html)
                DEPSFLAG_GCC="-no-cpp-precomp -MMD"
            ;;
            * )
                DEPSFLAG_GCC="-MMD"
            ;;
        esac
        AC_MSG_RESULT([gcc])
    else
        AC_MSG_RESULT([none])
    fi

    if test $DEPS_TRACKING = 1 ; then
        AC_BAKEFILE_CREATE_FILE_BK_DEPS
        chmod +x bk-deps
    fi
    
    AC_SUBST(DEPS_TRACKING)
])

dnl ---------------------------------------------------------------------------
dnl AC_BAKEFILE_CHECK_BASIC_STUFF
dnl
dnl Checks for presence of basic programs, such as C and C++ compiler, "ranlib"
dnl or "install"
dnl ---------------------------------------------------------------------------

AC_DEFUN([AC_BAKEFILE_CHECK_BASIC_STUFF],
[
    AC_PROG_RANLIB
    AC_PROG_INSTALL
    AC_PROG_LN_S

    AC_PROG_MAKE_SET
    AC_SUBST(MAKE_SET)
    
    AC_CHECK_TOOL(AR, ar, ar)
    AC_CHECK_TOOL(STRIP, strip, :)
    AC_CHECK_TOOL(NM, nm, :)

    case ${BAKEFILE_HOST} in
        *-hp-hpux* )
            dnl HP-UX install doesn't handle the "-d" switch so don't
            dnl use it there
            INSTALL_DIR="mkdir -p"
            ;;
        *)  INSTALL_DIR="$INSTALL -d"
            ;;
    esac
    AC_SUBST(INSTALL_DIR)

    LDFLAGS_GUI=
    case ${BAKEFILE_HOST} in
        *-*-cygwin* | *-*-mingw32* )
        LDFLAGS_GUI="-mwindows"
    esac
    AC_SUBST(LDFLAGS_GUI)
])


dnl ---------------------------------------------------------------------------
dnl AC_BAKEFILE_RES_COMPILERS
dnl
dnl Checks for presence of resource compilers for win32 or mac
dnl ---------------------------------------------------------------------------

AC_DEFUN([AC_BAKEFILE_RES_COMPILERS],
[
    RESCOMP=
    SETFILE=

    case ${BAKEFILE_HOST} in 
        *-*-cygwin* | *-*-mingw32* )
            dnl Check for win32 resources compiler:
            if test "$build" != "$host" ; then
                RESCOMP=$host_alias-windres
            else
                AC_CHECK_PROG(RESCOMP, windres, windres, windres)
            fi
         ;;
 
      *-*-darwin* | powerpc-apple-macos* )
            AC_CHECK_PROG(RESCOMP, Rez, Rez, /Developer/Tools/Rez)
            AC_CHECK_PROG(SETFILE, SetFile, SetFile, /Developer/Tools/SetFile)
        ;;
    esac

    AC_SUBST(RESCOMP)
    AC_SUBST(SETFILE)
])

dnl ---------------------------------------------------------------------------
dnl AC_BAKEFILE_PRECOMP_HEADERS
dnl
dnl Check for precompiled headers support (GCC >= 3.4)
dnl ---------------------------------------------------------------------------

AC_DEFUN([AC_BAKEFILE_PRECOMP_HEADERS],
[

    AC_ARG_ENABLE([precomp-headers],
                  AS_HELP_STRING([--disable-precomp-headers],
                                 [don't use precompiled headers even if compiler can]),
                  [bk_use_pch="$enableval"])

    GCC_PCH=0

    if test "x$bk_use_pch" = "x" -o "x$bk_use_pch" = "xyes" ; then
        if test "x$GCC" = "xyes"; then
            dnl test if we have gcc-3.4:
            AC_MSG_CHECKING([if the compiler supports precompiled headers])
            AC_TRY_COMPILE([],
                [
                    #if !defined(__GNUC__) || !defined(__GNUC_MINOR__)
                        #error "no pch support"
                    #endif
                    #if (__GNUC__ < 3)
                        #error "no pch support"
                    #endif
                    #if (__GNUC__ == 3) && \
                       ((!defined(__APPLE_CC__) && (__GNUC_MINOR__ < 4)) || \
                       ( defined(__APPLE_CC__) && (__GNUC_MINOR__ < 3)))
                        #error "no pch support"
                    #endif
                ],
                [
                    AC_MSG_RESULT([yes])
                    GCC_PCH=1
                ],
                [
                    AC_MSG_RESULT([no])
                ])
            if test $GCC_PCH = 1 ; then
                AC_BAKEFILE_CREATE_FILE_BK_MAKE_PCH
                chmod +x bk-make-pch
            fi
        fi
    fi

    AC_SUBST(GCC_PCH)
])


dnl ---------------------------------------------------------------------------
dnl AC_BAKEFILE
dnl
dnl To be used in configure.in of any project using Bakefile-generated mks
dnl
dnl Behaviour can be modified by setting following variables:
dnl    BAKEFILE_CHECK_BASICS    set to "no" if you don't want bakefile to
dnl                             to perform check for basic tools like ranlib
dnl    BAKEFILE_HOST            set this to override host detection, defaults
dnl                             to ${host}
dnl    BAKEFILE_FORCE_PLATFORM  set to override platform detection
dnl ---------------------------------------------------------------------------

AC_DEFUN([AC_BAKEFILE],
[
    AC_PREREQ(2.58)

    if test "x$BAKEFILE_HOST" = "x"; then
        BAKEFILE_HOST="${host}"
    fi

    if test "x$BAKEFILE_CHECK_BASICS" != "xno"; then
        AC_BAKEFILE_CHECK_BASIC_STUFF
    fi
    AC_BAKEFILE_GNUMAKE
    AC_BAKEFILE_PLATFORM
    AC_BAKEFILE_PLATFORM_SPECIFICS
    AC_BAKEFILE_SUFFIXES
    AC_BAKEFILE_SHARED_LD
    AC_BAKEFILE_SHARED_VERSIONS
    AC_BAKEFILE_DEPS
    AC_BAKEFILE_RES_COMPILERS

    BAKEFILE_BAKEFILE_M4_VERSION="0.1.4"
    
    builtin(include, autoconf_inc.m4)
    
    if test "$BAKEFILE_BAKEFILE_M4_VERSION" != "$BAKEFILE_AUTOCONF_INC_M4_VERSION" ; then
        AC_MSG_ERROR([Versions of Bakefile used to generate makefiles ($BAKEFILE_AUTOCONF_INC_M4_VERSION) and configure ($BAKEFILE_BAKEFILE_M4_VERSION) do not match.])
    fi
])
        

dnl ---------------------------------------------------------------------------
dnl              Embedded copies of helper scripts follow:
dnl ---------------------------------------------------------------------------

AC_DEFUN([AC_BAKEFILE_CREATE_FILE_DLLAR_SH],
[
dnl ===================== dllar.sh begins here =====================
D='$'
cat <<EOF >dllar.sh
#!/bin/sh
#
# dllar - a tool to build both a .dll and an .a file
# from a set of object (.o) files for EMX/OS2.
#
#  Written by Andrew Zabolotny, bit@freya.etu.ru
#  Ported to Unix like shell by Stefan Neis, Stefan.Neis@t-online.de
#
#  This script will accept a set of files on the command line.
#  All the public symbols from the .o files will be exported into
#  a .DEF file, then linker will be run (through gcc) against them to
#  build a shared library consisting of all given .o files. All libraries
#  (.a) will be first decompressed into component .o files then act as
#  described above. You can optionally give a description (-d "description")
#  which will be put into .DLL. To see the list of accepted options (as well
#  as command-line format) simply run this program without options. The .DLL
#  is built to be imported by name (there is no guarantee that new versions
#  of the library you build will have same ordinals for same symbols).
#
#  dllar is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 2, or (at your option)
#  any later version.
#
#  dllar is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with dllar; see the file COPYING.  If not, write to the Free
#  Software Foundation, 59 Temple Place - Suite 330, Boston, MA
#  02111-1307, USA.

# To successfuly run this program you will need:
#  - Current drive should have LFN support (HPFS, ext2, network, etc)
#    (Sometimes dllar generates filenames which won't fit 8.3 scheme)
#  - gcc
#    (used to build the .dll)
#  - emxexp
#    (used to create .def file from .o files)
#  - emximp
#    (used to create .a file from .def file)
#  - GNU text utilites (cat, sort, uniq)
#    used to process emxexp output
#  - GNU file utilities (mv, rm)
#  - GNU sed
#  - lxlite (optional, see flag below)
#    (used for general .dll cleanup)
#

flag_USE_LXLITE=1;

#
# helper functions
# basnam, variant of basename, which does _not_ remove the path, _iff_
#                              second argument (suffix to remove) is given
basnam(){
    case ${D}# in
    1)
        echo ${D}1 | sed 's/.*\\///' | sed 's/.*\\\\//'
        ;;
    2)
        echo ${D}1 | sed 's/'${D}2'${D}//'
        ;;
    *)
        echo "error in basnam ${D}*"
        exit 8
        ;;
    esac
}

# Cleanup temporary files and output
CleanUp() {
    cd ${D}curDir
    for i in ${D}inputFiles ; do
        case ${D}i in
        *!)
            rm -rf \`basnam ${D}i !\`
            ;;
        *)
            ;;
        esac
    done

    # Kill result in case of failure as there is just to many stupid make/nmake
    # things out there which doesn't do this.
    if @<:@ ${D}# -eq 0 @:>@; then
        rm -f ${D}arcFile ${D}arcFile2 ${D}defFile ${D}dllFile
    fi
}

# Print usage and exit script with rc=1.
PrintHelp() {
 echo 'Usage: dllar.sh @<:@-o@<:@utput@:>@ output_file@:>@ @<:@-i@<:@mport@:>@ importlib_name@:>@'
 echo '       @<:@-name-mangler-script script.sh@:>@'
 echo '       @<:@-d@<:@escription@:>@ "dll descrption"@:>@ @<:@-cc "CC"@:>@ @<:@-f@<:@lags@:>@ "CFLAGS"@:>@'
 echo '       @<:@-ord@<:@inals@:>@@:>@ -ex@<:@clude@:>@ "symbol(s)"'
 echo '       @<:@-libf@<:@lags@:>@ "{INIT|TERM}{GLOBAL|INSTANCE}"@:>@ @<:@-nocrt@<:@dll@:>@@:>@ @<:@-nolxl@<:@ite@:>@@:>@'
 echo '       @<:@*.o@:>@ @<:@*.a@:>@'
 echo '*> "output_file" should have no extension.'
 echo '   If it has the .o, .a or .dll extension, it is automatically removed.'
 echo '   The import library name is derived from this and is set to "name".a,'
 echo '   unless overridden by -import'
 echo '*> "importlib_name" should have no extension.'
 echo '   If it has the .o, or .a extension, it is automatically removed.'
 echo '   This name is used as the import library name and may be longer and'
 echo '   more descriptive than the DLL name which has to follow the old '
 echo '   8.3 convention of FAT.'
 echo '*> "script.sh may be given to override the output_file name by a'
 echo '   different name. It is mainly useful if the regular make process'
 echo '   of some package does not take into account OS/2 restriction of'
 echo '   DLL name lengths. It takes the importlib name as input and is'
 echo '   supposed to procude a shorter name as output. The script should'
 echo '   expect to get importlib_name without extension and should produce'
 echo '   a (max.) 8 letter name without extension.'
 echo '*> "cc" is used to use another GCC executable.   (default: gcc.exe)'
 echo '*> "flags" should be any set of valid GCC flags. (default: -s -Zcrtdll)'
 echo '   These flags will be put at the start of GCC command line.'
 echo '*> -ord@<:@inals@:>@ tells dllar to export entries by ordinals. Be careful.'
 echo '*> -ex@<:@clude@:>@ defines symbols which will not be exported. You can define'
 echo '   multiple symbols, for example -ex "myfunc yourfunc _GLOBAL*".'
 echo '   If the last character of a symbol is "*", all symbols beginning'
 echo '   with the prefix before "*" will be exclude, (see _GLOBAL* above).'
 echo '*> -libf@<:@lags@:>@ can be used to add INITGLOBAL/INITINSTANCE and/or'
 echo '   TERMGLOBAL/TERMINSTANCE flags to the dynamically-linked library.'
 echo '*> -nocrt@<:@dll@:>@ switch will disable linking the library against emx''s'
 echo '   C runtime DLLs.'
 echo '*> -nolxl@<:@ite@:>@ switch will disable running lxlite on the resulting DLL.'
 echo '*> All other switches (for example -L./ or -lmylib) will be passed'
 echo '   unchanged to GCC at the end of command line.'
 echo '*> If you create a DLL from a library and you do not specify -o,'
 echo '   the basename for DLL and import library will be set to library name,'
 echo '   the initial library will be renamed to 'name'_s.a (_s for static)'
 echo '   i.e. "dllar gcc.a" will create gcc.dll and gcc.a, and the initial'
 echo '   library will be renamed into gcc_s.a.'
 echo '--------'
 echo 'Example:'
 echo '   dllar -o gcc290.dll libgcc.a -d "GNU C runtime library" -ord'
 echo '    -ex "__main __ctordtor*" -libf "INITINSTANCE TERMINSTANCE"'
 CleanUp
 exit 1
}

# Execute a command.
# If exit code of the commnad <> 0 CleanUp() is called and we'll exit the script.
# @Uses    Whatever CleanUp() uses.
doCommand() {
    echo "${D}*"
    eval ${D}*
    rcCmd=${D}?

    if @<:@ ${D}rcCmd -ne 0 @:>@; then
        echo "command failed, exit code="${D}rcCmd
        CleanUp
        exit ${D}rcCmd
    fi
}

# main routine
# setup globals
cmdLine=${D}*
outFile=""
outimpFile=""
inputFiles=""
renameScript=""
description=""
CC=gcc.exe
CFLAGS="-s -Zcrtdll"
EXTRA_CFLAGS=""
EXPORT_BY_ORDINALS=0
exclude_symbols=""
library_flags=""
curDir=\`pwd\`
curDirS=curDir
case ${D}curDirS in
*/)
  ;;
*)
  curDirS=${D}{curDirS}"/"
  ;;
esac
# Parse commandline
libsToLink=0
omfLinking=0
while @<:@ ${D}1 @:>@; do
    case ${D}1 in
    -ord*)
        EXPORT_BY_ORDINALS=1;
        ;;
    -o*)
	shift
        outFile=${D}1
	;;
    -i*)
        shift
        outimpFile=${D}1
        ;;
    -name-mangler-script)
        shift
        renameScript=${D}1
        ;;
    -d*)
        shift
        description=${D}1
        ;;
    -f*)
        shift
        CFLAGS=${D}1
        ;;
    -c*)
        shift
        CC=${D}1
        ;;
    -h*)
        PrintHelp
        ;;
    -ex*)
        shift
        exclude_symbols=${D}{exclude_symbols}${D}1" "
        ;;
    -libf*)
        shift
        library_flags=${D}{library_flags}${D}1" "
        ;;
    -nocrt*)
        CFLAGS="-s"
        ;;
    -nolxl*)
        flag_USE_LXLITE=0
        ;;
    -* | /*)
        case ${D}1 in
        -L* | -l*)
            libsToLink=1
            ;;
        -Zomf)
            omfLinking=1
            ;;
        *)
            ;;
        esac
        EXTRA_CFLAGS=${D}{EXTRA_CFLAGS}" "${D}1
        ;;
    *.dll)
        EXTRA_CFLAGS="${D}{EXTRA_CFLAGS} \`basnam ${D}1 .dll\`"
        if @<:@ ${D}omfLinking -eq 1 @:>@; then
            EXTRA_CFLAGS="${D}{EXTRA_CFLAGS}.lib"
	else
            EXTRA_CFLAGS="${D}{EXTRA_CFLAGS}.a"
        fi
        ;;
    *)
        found=0;
        if @<:@ ${D}libsToLink -ne 0 @:>@; then
            EXTRA_CFLAGS=${D}{EXTRA_CFLAGS}" "${D}1
        else
            for file in ${D}1 ; do
                if @<:@ -f ${D}file @:>@; then
                    inputFiles="${D}{inputFiles} ${D}file"
                    found=1
                fi
            done
            if @<:@ ${D}found -eq 0 @:>@; then
                echo "ERROR: No file(s) found: "${D}1
                exit 8
            fi
        fi
      ;;
    esac
    shift
done # iterate cmdline words

#
if @<:@ -z "${D}inputFiles" @:>@; then
    echo "dllar: no input files"
    PrintHelp
fi

# Now extract all .o files from .a files
newInputFiles=""
for file in ${D}inputFiles ; do
    case ${D}file in
    *.a | *.lib)
        case ${D}file in
        *.a)
            suffix=".a"
            AR="ar"
            ;;
        *.lib)
            suffix=".lib"
            AR="emxomfar"
            EXTRA_CFLAGS="${D}EXTRA_CFLAGS -Zomf"
            ;;
        *)
            ;;
        esac
        dirname=\`basnam ${D}file ${D}suffix\`"_%"
        mkdir ${D}dirname
        if @<:@ ${D}? -ne 0 @:>@; then
            echo "Failed to create subdirectory ./${D}dirname"
            CleanUp
            exit 8;
        fi
        # Append '!' to indicate archive
        newInputFiles="${D}newInputFiles ${D}{dirname}!"
        doCommand "cd ${D}dirname; ${D}AR x ../${D}file"
        cd ${D}curDir
        found=0;
        for subfile in ${D}dirname/*.o* ; do
            if @<:@ -f ${D}subfile @:>@; then
                found=1
                if @<:@ -s ${D}subfile @:>@; then
	            # FIXME: This should be: is file size > 32 byte, _not_ > 0!
                    newInputFiles="${D}newInputFiles ${D}subfile"
                fi
            fi
        done
        if @<:@ ${D}found -eq 0 @:>@; then
            echo "WARNING: there are no files in archive \\'${D}file\\'"
        fi
        ;;
    *)
        newInputFiles="${D}{newInputFiles} ${D}file"
        ;;
    esac
done
inputFiles="${D}newInputFiles"

# Output filename(s).
do_backup=0;
if @<:@ -z ${D}outFile @:>@; then
    do_backup=1;
    set outFile ${D}inputFiles; outFile=${D}2
fi

# If it is an archive, remove the '!' and the '_%' suffixes
case ${D}outFile in
*_%!)
    outFile=\`basnam ${D}outFile _%!\`
    ;;
*)
    ;;
esac
case ${D}outFile in
*.dll)
    outFile=\`basnam ${D}outFile .dll\`
    ;;
*.DLL)
    outFile=\`basnam ${D}outFile .DLL\`
    ;;
*.o)
    outFile=\`basnam ${D}outFile .o\`
    ;;
*.obj)
    outFile=\`basnam ${D}outFile .obj\`
    ;;
*.a)
    outFile=\`basnam ${D}outFile .a\`
    ;;
*.lib)
    outFile=\`basnam ${D}outFile .lib\`
    ;;
*)
    ;;
esac
case ${D}outimpFile in
*.a)
    outimpFile=\`basnam ${D}outimpFile .a\`
    ;;
*.lib)
    outimpFile=\`basnam ${D}outimpFile .lib\`
    ;;
*)
    ;;
esac
if @<:@ -z ${D}outimpFile @:>@; then
    outimpFile=${D}outFile
fi
defFile="${D}{outFile}.def"
arcFile="${D}{outimpFile}.a"
arcFile2="${D}{outimpFile}.lib"

#create ${D}dllFile as something matching 8.3 restrictions,
if @<:@ -z ${D}renameScript @:>@ ; then
    dllFile="${D}outFile"
else
    dllFile=\`${D}renameScript ${D}outimpFile\`
fi

if @<:@ ${D}do_backup -ne 0 @:>@ ; then
    if @<:@ -f ${D}arcFile @:>@ ; then
        doCommand "mv ${D}arcFile ${D}{outFile}_s.a"
    fi
    if @<:@ -f ${D}arcFile2 @:>@ ; then
        doCommand "mv ${D}arcFile2 ${D}{outFile}_s.lib"
    fi
fi

# Extract public symbols from all the object files.
tmpdefFile=${D}{defFile}_%
rm -f ${D}tmpdefFile
for file in ${D}inputFiles ; do
    case ${D}file in
    *!)
        ;;
    *)
        doCommand "emxexp -u ${D}file >> ${D}tmpdefFile"
        ;;
    esac
done

# Create the def file.
rm -f ${D}defFile
echo "LIBRARY \`basnam ${D}dllFile\` ${D}library_flags" >> ${D}defFile
dllFile="${D}{dllFile}.dll"
if @<:@ ! -z ${D}description @:>@; then
    echo "DESCRIPTION  \\"${D}{description}\\"" >> ${D}defFile
fi
echo "EXPORTS" >> ${D}defFile

doCommand "cat ${D}tmpdefFile | sort.exe | uniq.exe > ${D}{tmpdefFile}%"
grep -v "^ *;" < ${D}{tmpdefFile}% | grep -v "^ *${D}" >${D}tmpdefFile

# Checks if the export is ok or not.
for word in ${D}exclude_symbols; do
    grep -v ${D}word < ${D}tmpdefFile >${D}{tmpdefFile}%
    mv ${D}{tmpdefFile}% ${D}tmpdefFile
done


if @<:@ ${D}EXPORT_BY_ORDINALS -ne 0 @:>@; then
    sed "=" < ${D}tmpdefFile | \\
    sed '
      N
      : loop
      s/^\\(@<:@0-9@:>@\\+\\)\\(@<:@^;@:>@*\\)\\(;.*\\)\\?/\\2 @\\1 NONAME/
      t loop
    ' > ${D}{tmpdefFile}%
    grep -v "^ *${D}" < ${D}{tmpdefFile}% > ${D}tmpdefFile
else
    rm -f ${D}{tmpdefFile}%
fi
cat ${D}tmpdefFile >> ${D}defFile
rm -f ${D}tmpdefFile

# Do linking, create implib, and apply lxlite.
gccCmdl="";
for file in ${D}inputFiles ; do
    case ${D}file in
    *!)
        ;;
    *)
        gccCmdl="${D}gccCmdl ${D}file"
        ;;
    esac
done
doCommand "${D}CC ${D}CFLAGS -Zdll -o ${D}dllFile ${D}defFile ${D}gccCmdl ${D}EXTRA_CFLAGS"
touch "${D}{outFile}.dll"

doCommand "emximp -o ${D}arcFile ${D}defFile"
if @<:@ ${D}flag_USE_LXLITE -ne 0 @:>@; then
    add_flags="";
    if @<:@ ${D}EXPORT_BY_ORDINALS -ne 0 @:>@; then
        add_flags="-ynd"
    fi
    doCommand "lxlite -cs -t: -mrn -mln ${D}add_flags ${D}dllFile"
fi
doCommand "emxomf -s -l ${D}arcFile"

# Successful exit.
CleanUp 1
exit 0
EOF
dnl ===================== dllar.sh ends here =====================
])

AC_DEFUN([AC_BAKEFILE_CREATE_FILE_BK_DEPS],
[
dnl ===================== bk-deps begins here =====================
D='$'
cat <<EOF >bk-deps
#!/bin/sh

# This script is part of Bakefile (http://bakefile.sourceforge.net) autoconf
# script. It is used to track C/C++ files dependencies in portable way.
#
# Permission is given to use this file in any way.

DEPSMODE=${DEPSMODE}
DEPSDIR=.deps
DEPSFLAG_GCC="${DEPSFLAG_GCC}"

mkdir -p ${D}DEPSDIR

if test ${D}DEPSMODE = gcc ; then
    ${D}* ${D}{DEPSFLAG_GCC}
    status=${D}?
    if test ${D}{status} != 0 ; then
        exit ${D}{status}
    fi
    # move created file to the location we want it in:
    while test ${D}# -gt 0; do
        case "${D}1" in
            -o )
                shift
                objfile=${D}1
            ;;
            -* )
            ;;
            * )
                srcfile=${D}1
            ;;
        esac
        shift
    done
    depfile=\`basename ${D}srcfile | sed -e 's/\\..*${D}/.d/g'\`
    depobjname=\`echo ${D}depfile |sed -e 's/\\.d/.o/g'\`
    if test -f ${D}depfile ; then
        sed -e "s,${D}depobjname:,${D}objfile:,g" ${D}depfile >${D}{DEPSDIR}/${D}{objfile}.d
        rm -f ${D}depfile
    else
        depfile=\`basename ${D}objfile | sed -e 's/\\..*${D}/.d/g'\`
        if test -f ${D}depfile ; then
            sed -e "/^${D}objfile/!s,${D}depobjname:,${D}objfile:,g" ${D}depfile >${D}{DEPSDIR}/${D}{objfile}.d
            rm -f ${D}depfile
        fi
    fi
    exit 0
else
    ${D}*
    exit ${D}?
fi
EOF
dnl ===================== bk-deps ends here =====================
])

AC_DEFUN([AC_BAKEFILE_CREATE_FILE_SHARED_LD_SH],
[
dnl ===================== shared-ld-sh begins here =====================
D='$'
cat <<EOF >shared-ld-sh
#!/bin/sh
#-----------------------------------------------------------------------------
#-- Name:        distrib/mac/shared-ld-sh
#-- Purpose:     Link a mach-o dynamic shared library for Darwin / Mac OS X
#-- Author:      Gilles Depeyrot
#-- Copyright:   (c) 2002 Gilles Depeyrot
#-- Licence:     any use permitted
#-----------------------------------------------------------------------------

verbose=0
args=""
objects=""
linking_flag="-dynamiclib"

while test ${D}# -gt 0; do
    case ${D}1 in

       -v)
        verbose=1
        ;;

       -o|-compatibility_version|-current_version|-framework|-undefined|-install_name)
        # collect these options and values
        args="${D}{args} ${D}1 ${D}2"
        shift
        ;;

       -l*|-L*|-flat_namespace|-headerpad_max_install_names)
        # collect these options
        args="${D}{args} ${D}1"
        ;;

       -dynamiclib|-bundle)
        linking_flag="${D}1"
        ;;

       -*)
        echo "shared-ld: unhandled option '${D}1'"
        exit 1
        ;;

        *.o | *.a | *.dylib)
        # collect object files
        objects="${D}{objects} ${D}1"
        ;;

        *)
        echo "shared-ld: unhandled argument '${D}1'"
        exit 1
        ;;

    esac
    shift
done

#
# Link one module containing all the others
#
if test ${D}{verbose} = 1; then
    echo "c++ -r -keep_private_externs -nostdlib ${D}{objects} -o master.${D}${D}.o"
fi
c++ -r -keep_private_externs -nostdlib ${D}{objects} -o master.${D}${D}.o
status=${D}?
if test ${D}{status} != 0; then
    exit ${D}{status}
fi

#
# Link the shared library from the single module created
#
if test ${D}{verbose} = 1; then
    echo "cc ${D}{linking_flag} master.${D}${D}.o ${D}{args}"
fi
c++ ${D}{linking_flag} master.${D}${D}.o ${D}{args}
status=${D}?
if test ${D}{status} != 0; then
    exit ${D}{status}
fi

#
# Remove intermediate module
#
rm -f master.${D}${D}.o

exit 0
EOF
dnl ===================== shared-ld-sh ends here =====================
])

AC_DEFUN([AC_BAKEFILE_CREATE_FILE_BK_MAKE_PCH],
[
dnl ===================== bk-make-pch begins here =====================
D='$'
cat <<EOF >bk-make-pch
#!/bin/sh

# This script is part of Bakefile (http://bakefile.sourceforge.net) autoconf
# script. It is used to generated precompiled headers.
#
# Permission is given to use this file in any way.

outfile="${D}{1}"
header="${D}{2}"
shift
shift

compiler=
headerfile=
while test ${D}{#} -gt 0; do
    case "${D}{1}" in
        -I* )
            incdir=\`echo ${D}{1} | sed -e 's/-I\\(.*\\)/\\1/g'\`
            if test "x${D}{headerfile}" = "x" -a -f "${D}{incdir}/${D}{header}" ; then
                headerfile="${D}{incdir}/${D}{header}"
            fi
        ;;
    esac
    compiler="${D}{compiler} ${D}{1}"
    shift
done

if test "x${D}{headerfile}" = "x" ; then
    echo "error: can't find header ${D}{header} in include paths" >2
else
    if test -f ${D}{outfile} ; then
        rm -f ${D}{outfile}
    else
        mkdir -p \`dirname ${D}{outfile}\`
    fi
    depsfile=".deps/\`echo ${D}{outfile} | tr '/.' '__'\`.d"
    mkdir -p .deps
    # can do this because gcc is >= 3.4:
    ${D}{compiler} -o ${D}{outfile} -MMD -MF "${D}{depsfile}" "${D}{headerfile}"
    exit ${D}{?}
fi
EOF
dnl ===================== bk-make-pch ends here =====================
])