]> git.saurik.com Git - wxWidgets.git/blobdiff - aclocal.m4
Quick fixes
[wxWidgets.git] / aclocal.m4
index a5d7c56139a2e863d99153551dfcc2674ce2b123..01c7309c6fde6c2cb8d8874a3591f428c1eaaecd 100644 (file)
@@ -1,14 +1,15 @@
-dnl aclocal.m4 generated automatically by aclocal 1.4-p5
+# aclocal.m4 generated automatically by aclocal 1.6.3 -*- Autoconf -*-
 
-dnl Copyright (C) 1994, 1995-8, 1999, 2001 Free Software Foundation, Inc.
-dnl This file is free software; the Free Software Foundation
-dnl gives unlimited permission to copy and/or distribute it,
-dnl with or without modifications, as long as this notice is preserved.
+# Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002
+# Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
 
-dnl This program is distributed in the hope that it will be useful,
-dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without
-dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A
-dnl PARTICULAR PURPOSE.
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
 
 dnl ---------------------------------------------------------------------------
 dnl
@@ -409,15 +410,17 @@ AC_DEFUN([WX_VERSIONED_SYMBOLS],
 [
   found_versioning=no
 
-  dnl Check for known non-gcc cases:
-  case "${host}" in
-    *-*-solaris2* )
-      if test "x$GCC" != "xyes" ; then
-          LDFLAGS_VERSIONING="-M $1"
-          found_versioning=yes
-      fi
-    ;;
-  esac
+  dnl FIXME - doesn't work, Solaris linker doesn't accept wildcards
+  dnl         in the script.
+  dnl dnl Check for known non-gcc cases:
+  dnl case "${host}" in
+  dnl   *-*-solaris2* )
+  dnl     if test "x$GCC" != "xyes" ; then
+  dnl         LDFLAGS_VERSIONING="-M $1"
+  dnl         found_versioning=yes
+  dnl     fi
+  dnl   ;;
+  dnl esac
   
   dnl Generic check for GCC or GCC-like behaviour (Intel C++, GCC):
   if test $found_versioning = no ; then
@@ -591,6 +594,24 @@ if test "$enable_largefile" != no; then
 fi
 ])
 
+
+dnl Available from the GNU Autoconf Macro Archive at:
+dnl http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_const_cast.html
+dnl
+AC_DEFUN([AC_CXX_CONST_CAST],
+[AC_CACHE_CHECK(whether the compiler supports const_cast<>,
+ac_cv_cxx_const_cast,
+[AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ AC_TRY_COMPILE(,[int x = 0;const int& y = x;int& z = const_cast<int&>(y);return z;],
+ ac_cv_cxx_const_cast=yes, ac_cv_cxx_const_cast=no)
+ AC_LANG_RESTORE
+])
+if test "$ac_cv_cxx_const_cast" = yes; then
+  AC_DEFINE(HAVE_CONST_CAST,,[define if the compiler supports const_cast<>])
+fi
+])
+
 # Configure paths for GTK+
 # Owen Taylor     1997-2001
 
@@ -1041,3 +1062,726 @@ AC_DEFUN(PKG_CHECK_MODULES, [
 
 
 
+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$bakefile_cv_prog_makeisgnu" = "xyes"; then
+        IF_GNU_MAKE=""
+    else
+        IF_GNU_MAKE="#"
+    fi
+    AC_SUBST(IF_GNU_MAKE)
+])
+
+dnl ---------------------------------------------------------------------------
+dnl AC_BAKEFILE_PLATFORM
+dnl
+dnl Detects platform and sets PLATFORM_XXX variables accordingly
+dnl ---------------------------------------------------------------------------
+
+AC_DEFUN(AC_BAKEFILE_PLATFORM,
+[
+    PLATFORM_UNIX=0
+    PLATFORM_WIN32=0
+    PLATFORM_MSDOS=0
+    PLATFORM_MAC=0
+    PLATFORM_MACOSX=0
+    PLATFORM_OS2=0
+    
+    case "${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
+        ;;
+        * )
+            PLATFORM_UNIX=1
+        ;;
+    esac
+
+    AC_SUBST(PLATFORM_UNIX)
+    AC_SUBST(PLATFORM_WIN32)
+    AC_SUBST(PLATFORM_MSDOS)
+    AC_SUBST(PLATFORM_MAC)
+    AC_SUBST(PLATFORM_MACOSX)
+    AC_SUBST(PLATFORM_OS2)
+])
+
+
+
+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
+    DLLPREFIX=lib
+    DLLPREFIX_MODULE=
+    
+    case "${host}" in
+        *-hp-hpux* )
+            SO_SUFFIX="sl"
+            SO_SUFFIX_MODULE="sl"
+        ;;
+        *-*-aix* )
+            dnl quoting from
+            dnl http://www-1.ibm.com/servers/esdd/articles/gnu.html:
+            dnl     Both archive libraries and shared libraries on AIX have an
+            dnl     .a extension. This will explain why you can't link with an
+            dnl     .so and why it works with the name changed to .a.
+            SO_SUFFIX="a"
+            SO_SUFFIX_MODULE="a"
+        ;;
+        *-*-cygwin* | *-*-mingw32* )
+            SO_SUFFIX="dll"
+            SO_SUFFIX_MODULE="dll"
+            EXEEXT=".exe"
+            DLLPREFIX=""
+        ;;
+        *-pc-msdosdjgpp )
+            EXEEXT=".exe"
+            DLLPREFIX=""
+        ;;
+        *-pc-os2_emx | *-pc-os2-emx )
+            EXEEXT=".exe"
+            DLLPREFIX=""
+            LIBPREFIX=""
+        ;;
+        powerpc-*-darwin* )
+            SO_SUFFIX="dylib"
+            SO_SUFFIX_MODULE="bundle"
+        ;;
+    esac
+
+    AC_SUBST(SO_SUFFIX)
+    AC_SUBST(SO_SUFFIX_MODULE)
+    AC_SUBST(EXEEXT)
+    AC_SUBST(LIBPREFIX)
+    AC_SUBST(DLLPREFIX)
+    AC_SUBST(DLLPREFIX_MODULE)
+])
+
+
+dnl ---------------------------------------------------------------------------
+dnl AC_BAKEFILE_SHARED_LD
+dnl
+dnl Detects command for making shared libraries, substitutes SHARED_LD_CC
+dnl and SHARED_LD_CXX.
+dnl ---------------------------------------------------------------------------
+
+AC_DEFUN(AC_BAKEFILE_SHARED_LD,
+[
+    dnl Defaults for GCC and ELF .so shared libs:
+    SHARED_LD_CC="\$(CC) -shared -o"
+    SHARED_LD_CXX="\$(CXX) -shared -o"
+
+    dnl the extra compiler flags needed for compilation of shared library
+    if test "x$GCC" = "xyes"; then
+        dnl the switch for gcc is the same under all platforms
+        PIC_FLAG="-fPIC"
+    fi
+
+    case "${host}" in
+      *-hp-hpux* )
+        dnl default settings are good for gcc but not for the native HP-UX
+        if test "x$GCC" = "xyes"; then
+            dnl -o flag must be after PIC flag
+            SHARED_LD_CC="${CC} -shared ${PIC_FLAG} -o"
+            SHARED_LD_CXX="${CXX} -shared ${PIC_FLAG} -o"
+        else
+            dnl no idea why it wants it, but it does
+            LDFLAGS="$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="${CXX} -G -o"
+            PIC_FLAG="-KPIC"
+        fi
+      ;;
+
+      *-*-darwin* )
+        dnl For Unix to MacOS X porting instructions, see:
+        dnl http://fink.sourceforge.net/doc/porting/porting.html
+        CFLAGS="$CFLAGS -fno-common"
+        CXXFLAGS="$CXXFLAGS -fno-common"
+        
+        dnl Most apps benefit from being fully binded (its faster and static
+        dnl variables initialized at startup work).
+        dnl This can be done either with the exe linker flag -Wl,-bind_at_load
+        dnl or with a double stage link in order to create a single module
+        dnl "-init _wxWindowsDylibInit" not useful with lazy linking solved
+
+        dnl If using newer dev tools then there is a -single_module flag that
+        dnl we can use to do this, otherwise we'll need to use a helper
+        dnl script.  Check the version of gcc to see which way we can go:
+        AC_CACHE_CHECK([for gcc 3.1 or later], wx_cv_gcc31, [
+           AC_TRY_COMPILE([],
+               [
+                   #if (__GNUC__ < 3) || \
+                       ((__GNUC__ == 3) && (__GNUC_MINOR__ < 1))
+                       #error old gcc
+                   #endif
+               ],
+               [
+                   wx_cv_gcc31=yes
+               ],
+               [
+                   wx_cv_gcc31=no
+               ]
+           )
+        ])
+        if test "$wx_cv_gcc31" = "no"; then
+            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 \${#} -gt 0; do
+    case \${1} in
+
+       -v)
+        verbose=1
+        ;;
+
+       -o|-compatibility_version|-current_version|-framework|-undefined|-install_name)
+        # collect these options and values
+        args="\${args} \${1} \${2}"
+        shift
+        ;;
+
+       -l*|-L*|-flat_namespace)
+        # collect these options
+        args="\${args} \${1}"
+        ;;
+
+       -dynamiclib|-bundle)
+        linking_flag="\${1}"
+        ;;
+
+       -*)
+        echo "shared-ld: unhandled option '\${1}'"
+        exit 1
+        ;;
+
+        *.o | *.a | *.dylib)
+        # collect object files
+        objects="\${objects} \${1}"
+        ;;
+
+        *)
+        echo "shared-ld: unhandled argument '\${1}'"
+        exit 1
+        ;;
+
+    esac
+    shift
+done
+
+#
+# Link one module containing all the others
+#
+if test \${verbose} = 1; then
+    echo "c++ -r -keep_private_externs -nostdlib \${objects} -o master.\$\$.o"
+fi
+c++ -r -keep_private_externs -nostdlib \${objects} -o master.\$\$.o
+status=\$?
+if test \${status} != 0; then
+    exit \${status}
+fi
+
+#
+# Link the shared library from the single module created
+#
+if test \${verbose} = 1; then
+    echo "cc \${linking_flag} master.\$\$.o \${args}"
+fi
+c++ \${linking_flag} master.\$\$.o \${args}
+status=\$?
+if test \${status} != 0; then
+    exit \${status}
+fi
+
+#
+# Remove intermediate module
+#
+rm -f master.\$\$.o
+
+exit 0
+EOF
+            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} -shared -o"
+        SHARED_LD_CXX="${LD} -shared -o"
+      ;;
+
+      *-*-irix* )
+        dnl default settings are ok for gcc
+        if test "x$GCC" != "xyes"; then
+            PIC_FLAG="-KPIC"
+        fi
+      ;;
+      
+      *-*-cygwin* | *-*-mingw32* )
+        PIC_FLAG=""
+      ;;
+      
+      *-*-freebsd* | *-*-openbsd* | *-*-netbsd* | \
+      *-*-sunos4* | \
+      *-*-osf* | \
+      *-*-dgux5* | \
+      *-pc-os2_emx | *-pc-os2-emx | \
+      *-*-sysv5* )
+        dnl defaults are ok
+      ;;
+
+      *)
+        AC_MSG_ERROR(unknown system type $host.)
+    esac
+
+    if test "x$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="$SHARED_LD_CXX"
+    fi
+
+    AC_SUBST(SHARED_LD_CC)
+    AC_SUBST(SHARED_LD_CXX)
+    AC_SUBST(SHARED_LD_MODULE_CC)
+    AC_SUBST(SHARED_LD_MODULE_CXX)
+    AC_SUBST(PIC_FLAG)
+])
+
+
+dnl ---------------------------------------------------------------------------
+dnl AC_BAKEFILE_SHARED_VERSIONS
+dnl
+dnl Detects linker options for attaching versions (sonames) to shared  libs.
+dnl ---------------------------------------------------------------------------
+
+AC_DEFUN(AC_BAKEFILE_SHARED_VERSIONS,
+[
+    USE_SOVERSION=0
+    USE_SOVERLINUX=0
+    USE_SOVERSOLARIS=0
+    USE_SOSYMLINKS=0
+    USE_MACVERSION=0
+    SONAME_FLAG=
+
+    case "${host}" in
+      *-*-linux* )
+        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$GCC" = "xyes"; then
+        DEPSMODE=gcc
+        DEPS_TRACKING=1
+        case "${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 $DEPS_TRACKING = 1 ; then
+        cat <<EOF >bk-deps
+#!/bin/sh
+
+# This script is part of Bakefile (http://bakefile.sourceforge.net) autoconf
+# script. It is used to track C/C++ files dependencies in portable way.
+#
+# Permission is given to use this file in any way.
+
+DEPSMODE=$DEPSMODE
+DEPSDIR=.deps
+DEPSFLAG_GCC="$DEPSFLAG_GCC"
+
+mkdir -p \$DEPSDIR
+
+if test \$DEPSMODE = gcc ; then
+    \${*} \${DEPSFLAG_GCC}
+    status=\${?}
+    if test \${status} != 0 ; then
+        exit \${status}
+    fi
+    # move created file to the location we want it in:
+    while test \${#} -gt 0; do
+        case "\${1}" in
+            -o )
+                shift
+                objfile=\${1}
+            ;;
+            -* )
+            ;;
+            * )
+                srcfile=\${1}
+            ;;
+        esac
+        shift
+    done
+    depfile=\`basename \$srcfile | sed -e 's/\..*$/.d/g'\`
+    depobjname=\`echo \$depfile |sed -e 's/\.d/.o/g'\`
+    if test -f \$depfile ; then
+        sed -e "s,\$depobjname:,\$objfile:,g" \$depfile >\${DEPSDIR}/\${objfile}.d
+        rm -f \$depfile
+    else
+        depfile=\`basename \$objfile | sed -e 's/\..*$/.d/g'\`
+        if test -f \$depfile ; then
+            sed -e "/^\$objfile/!s,\$depobjname:,\$objfile:,g" \$depfile >\${DEPSDIR}/\${objfile}.d
+            rm -f \$depfile
+        fi
+    fi
+    exit 0
+else
+    \${*}
+    exit \${?}
+fi
+EOF
+        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 ${host} in
+        *-hp-hpux* )
+            INSTALL_DIR="mkdir"
+            ;;
+        *)  INSTALL_DIR="$INSTALL -d"
+            ;;
+    esac
+    AC_SUBST(INSTALL_DIR)
+
+    LDFLAGS_GUI=
+    case ${host} in
+        *-*-cygwin* | *-*-mingw32* )
+        LDFLAGS_GUI="-Wl,--subsystem,windows -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 ${host} in 
+        *-*-cygwin* | *-*-mingw32* )
+            dnl Check for win32 resources compiler:
+            if test "$build" != "$host" ; then
+                RESCOMP=$host_alias-windres
+            else
+                AC_CHECK_PROG(RESCOMP, windres, windres, windres)
+            fi
+         ;;
+      *-*-darwin* )
+            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],
+                  [  --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])
+                    dnl FIXME - this is temporary, till .gch dependencies 
+                    dnl         are fixed in generated Makefiles
+                    CPPFLAGS="-fpch-deps $CPPFLAGS"
+                    GCC_PCH=1
+                ],
+                [
+                    AC_MSG_RESULT([no])
+                ])
+            if test $GCC_PCH = 1 ; then
+                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="\${1}"
+header="\${2}"
+shift
+shift
+
+compiler=
+headerfile=
+while test \${#} -gt 0; do
+    case "\${1}" in
+        -I* )
+            incdir=\`echo \${1} | sed -e 's/-I\(.*\)/\1/g'\`
+            if test "x\${headerfile}" = "x" -a -f "\${incdir}/\${header}" ; then
+                headerfile="\${incdir}/\${header}"
+            fi
+        ;;
+    esac
+    compiler="\${compiler} \${1}"
+    shift
+done
+
+if test "x\${headerfile}" = "x" ; then
+    echo "error: can't find header \${header} in include paths" >2
+else
+    if test -f \${outfile} ; then
+        rm -f \${outfile}
+    else
+        mkdir -p \`dirname \${outfile}\`
+    fi
+    depsfile=".deps/\`basename \${outfile}\`.d"
+    mkdir -p .deps
+    # can do this because gcc is >= 3.4:
+    \${compiler} -o \${outfile} -MMD -MF "\${depsfile}" "\${headerfile}"
+    exit \${?}
+fi
+EOF
+                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 ---------------------------------------------------------------------------
+
+AC_DEFUN(AC_BAKEFILE,
+[
+    if test "x$BAKEFILE_CHECK_BASICS" != "xno"; then
+        AC_BAKEFILE_CHECK_BASIC_STUFF
+    fi
+    AC_BAKEFILE_GNUMAKE
+    AC_BAKEFILE_PLATFORM
+    AC_BAKEFILE_SUFFIXES
+    AC_BAKEFILE_SHARED_LD
+    AC_BAKEFILE_SHARED_VERSIONS
+    AC_BAKEFILE_DEPS
+    AC_BAKEFILE_RES_COMPILERS
+
+    builtin(include, autoconf_inc.m4)
+])
+