bakefile.m4

A*算法 A*算法 A*算法 A*算法A*算法A*算法

        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"
        WINDOWS_IMPLIB=1
      ;;

      *-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* | *-*-k*bsd*-gnu | \
      *-*-sunos4* | \
      *-*-osf* | \
      *-*-dgux5* | \
      *-*-sysv5* | \
      *-pc-msdosdjgpp )
        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)
    AC_SUBST(WINDOWS_IMPLIB)
])


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_SOVERCYGWIN=0
    USE_SOSYMLINKS=0
    USE_MACVERSION=0
    SONAME_FLAG=

    case "${BAKEFILE_HOST}" in
      *-*-linux* | *-*-freebsd* | *-*-k*bsd*-gnu )
        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
      ;;

      *-*-cygwin* )
        USE_SOVERSION=1
        USE_SOVERCYGWIN=1
      ;;
    esac

    AC_SUBST(USE_SOVERSION)
    AC_SUBST(USE_SOVERLINUX)
    AC_SUBST(USE_SOVERSOLARIS)
    AC_SUBST(USE_SOVERCYGWIN)
    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_ARG_ENABLE([dependency-tracking],
                  AS_HELP_STRING([--disable-dependency-tracking],
                                 [don't use dependency tracking even if the compiler can]),
                  [bk_use_trackdeps="$enableval"])
    
    AC_MSG_CHECKING([for dependency tracking method])

    if test "x$bk_use_trackdeps" = "xno" ; then
        DEPS_TRACKING=0
        AC_MSG_RESULT([disabled])
    else
        DEPS_TRACKING=1

        if test "x$GCC" = "xyes"; then
            DEPSMODE=gcc
            case "${BAKEFILE_HOST}" in
                *-*-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="-no-cpp-precomp -MMD"
                ;;
                * )
                    DEPSFLAG="-MMD"
                ;;
            esac
            AC_MSG_RESULT([gcc])
        elif test "x$MWCC" = "xyes"; then
            DEPSMODE=mwcc
            DEPSFLAG="-MM"
            AC_MSG_RESULT([mwcc])
        elif test "x$SUNCC" = "xyes"; then
            DEPSMODE=unixcc
            DEPSFLAG="-xM1"
            AC_MSG_RESULT([Sun cc])
        elif test "x$SGICC" = "xyes"; then
            DEPSMODE=unixcc
            DEPSFLAG="-M"
            AC_MSG_RESULT([SGI cc])
        elif test "x$HPCC" = "xyes"; then
            DEPSMODE=unixcc
            DEPSFLAG="+make"
            AC_MSG_RESULT([HP cc])
        elif test "x$COMPAQCC" = "xyes"; then
            DEPSMODE=gcc
            DEPSFLAG="-MD"
            AC_MSG_RESULT([Compaq cc])
        else
            DEPS_TRACKING=0
            AC_MSG_RESULT([none])
        fi

        if test $DEPS_TRACKING = 1 ; then
            AC_BAKEFILE_CREATE_FILE_BK_DEPS
            chmod +x bk-deps
        fi
    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],
[
    case ${BAKEFILE_HOST} in 
        *-*-cygwin* | *-*-mingw32* )
            dnl Check for win32 resources compiler:
            AC_CHECK_TOOL(WINDRES, windres)
         ;;
 
      *-*-darwin* | powerpc-apple-macos* )
            AC_CHECK_PROG(REZ, Rez, Rez, /Developer/Tools/Rez)
            AC_CHECK_PROG(SETFILE, SetFile, SetFile, /Developer/Tools/SetFile)
        ;;
    esac

    AC_SUBST(WINDRES)
    AC_SUBST(REZ)
    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
    ICC_PCH=0
    USE_PCH=0

    case ${BAKEFILE_HOST} in 
        *-*-cygwin* )
            dnl PCH support is broken in cygwin gcc because of unportable
            dnl assumptions about mmap() in gcc code which make PCH generation
            dnl fail erratically; disable PCH completely until this is fixed
            bk_use_pch="no"
            ;;
    esac

    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))) || \
                       ( defined(__INTEL_COMPILER) )
                        #error "no pch support"
                    #endif
                ],
                [
                    AC_MSG_RESULT([yes])
                    GCC_PCH=1
                ],
                [
                    AC_TRY_COMPILE([],
                        [
                            #if !defined(__INTEL_COMPILER) || \
                                (__INTEL_COMPILER < 800)
                                #error "no pch support"
                            #endif
                        ],
                        [
                            AC_MSG_RESULT([yes])
                            ICC_PCH=1
                        ],
                        [
                            AC_MSG_RESULT([no])
                        ])
                ])
            if test $GCC_PCH = 1 -o $ICC_PCH = 1 ; then
                USE_PCH=1
                AC_BAKEFILE_CREATE_FILE_BK_MAKE_PCH
                chmod +x bk-make-pch
            fi
        fi
    fi

    AC_SUBST(GCC_PCH)
    AC_SUBST(ICC_PCH)
])



dnl ---------------------------------------------------------------------------
dnl AC_BAKEFILE([autoconf_inc.m4 inclusion])
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
dnl Example usage:
dnl
dnl   AC_BAKEFILE([FOO(autoconf_inc.m4)])
dnl
dnl (replace FOO with m4_include above, aclocal would die otherwise)
dnl (yes, it's ugly, but thanks to a bug in aclocal, it's the only thing
dnl we can do...)
dnl ---------------------------------------------------------------------------

AC_DEFUN([AC_BAKEFILE],
[
    AC_PREREQ(2.58)

    if test "x$BAKEFILE_HOST" = "x"; then
               if test "x${host}" = "x" ; then
                       AC_MSG_ERROR([You must call the autoconf "CANONICAL_HOST" macro in your configure.ac (or .in) file.])
               fi

        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="0.2.0"
   
    dnl includes autoconf_inc.m4:
    $1
    
    if test "$BAKEFILE_AUTOCONF_INC_M4_VERSION" = "" ; then
        AC_MSG_ERROR([No version found in autoconf_inc.m4 - bakefile macro was changed to take additional argument, perhaps configure.in wasn't updated (see the documentation)?])
    fi
    
    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