# windowmaker.m4 - General macros for Window Maker autoconf # # Copyright (c) 2004 Dan Pascu # # This program 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 of the License, or # (at your option) any later version. # # This program 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 this program; if not, write to the Free Software Foundation, Inc., # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. dnl Tell m4 to not allow stuff starting with "WM_" in the generated file dnl because this is likely a problem of a macro that was not expanded as dnl expected (with an exception for an already used variable name) m4_pattern_forbid([^_?WM_]) m4_pattern_allow([^WM_OSDEP(_[A-Z]*)?$]) dnl dnl WM_CHECK_XFT_VERSION(MIN_VERSION, [ACTION-IF-FOUND [,ACTION-IF-NOT-FOUND]]) dnl dnl # $XFTFLAGS should be defined before calling this macro, dnl # else it will not be able to find Xft.h dnl AC_DEFUN([WM_CHECK_XFT_VERSION], [ CPPFLAGS_old="$CPPFLAGS" CPPFLAGS="$CPPFLAGS $XFTFLAGS $inc_search_path" xft_major_version=`echo $1 | sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'` xft_minor_version=`echo $1 | sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'` xft_micro_version=`echo $1 | sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'` AC_MSG_CHECKING([whether libXft is at least version $1]) AC_CACHE_VAL(ac_cv_lib_xft_version_ok, [AC_TRY_LINK( [/* Test version of libXft we have */ #include #include #if !defined(XFT_VERSION) || XFT_VERSION < $xft_major_version*10000 + $xft_minor_version*100 + $xft_micro_version #error libXft on this system is too old. Consider upgrading to at least $1 #endif ], [], eval "ac_cv_lib_xft_version_ok=yes", eval "ac_cv_lib_xft_version_ok=no")]) if eval "test \"`echo '$ac_cv_lib_xft_version_ok'`\" = yes"; then AC_MSG_RESULT(yes) ifelse([$2], , :, [$2]) else AC_MSG_RESULT(no) ifelse([$3], , , [$3]) fi CPPFLAGS="$CPPFLAGS_old" ]) dnl _WM_LIB_CHECK_FUNCTS dnl ----------------------- dnl (internal shell functions) dnl dnl Create 2 shell functions: dnl wm_fn_imgfmt_try_link: try to link against library dnl wm_fn_imgfmt_try_compile: try to compile against header dnl AC_DEFUN_ONCE([_WM_LIB_CHECK_FUNCTS], [@%:@ wm_fn_lib_try_link FUNCTION LFLAGS @%:@ ---------------------------------- @%:@ Try linking against library in $LFLAGS using function named $FUNCTION @%:@ Assumes that LIBS have been saved in 'wm_save_LIBS' by caller wm_fn_lib_try_link () { LIBS="$wm_save_LIBS $[]2" AC_TRY_LINK_FUNC([$[]1], [wm_retval=0], [wm_retval=1]) AS_SET_STATUS([$wm_retval]) } @%:@ wm_fn_lib_try_compile HEADER GVARDEF FUNC_CALL CFLAGS @%:@ ----------------------------------------------------- @%:@ Try to compile using header $HEADER and trying to call a function @%:@ using the $FUNC_CALL expression and using extra $CFLAGS in the @%:@ compiler's command line; GVARDEF can be used to include one line @%:@ in the global context of the source. @%:@ Assumes that CFLAGS have been saved in 'wm_save_CFLAGS' by caller wm_fn_lib_try_compile () { CFLAGS="$wm_save_CFLAGS $[]4" AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([@%:@include <$[]1> $[]2], [ $[]3;])], [wm_retval=0], [wm_retval=1]) AS_SET_STATUS([$wm_retval]) } ]) # WM_APPEND_ONCE # -------------- # # Append flags to a variable, but only if not already present # # Usage: WM_APPEND_ONCE([libflags], [variable]) # $1 libflags: the list of flag to append # $2 variable: the variable, if unset use LIBS AC_DEFUN([WM_APPEND_ONCE], [AS_VAR_PUSHDEF([VAR], [m4_ifnblank([$2], [$2], [LIBS])])dnl for wm_arg in $1 ; do AS_IF([echo " $VAR " | grep " $wm_arg " 2>&1 >/dev/null], [@%:@ Flag already present in VAR], [VAR="$VAR $wm_arg"]) done AS_VAR_POPDEF([VAR])dnl ]) # WM_LIB_CHECK # ------------ # # Check if a library exists (can be linked to) and check if its header can # compile (using code in parameter to the macro), then update the appropriate # stuff accordingly # # Usage: WM_LIB_CHECK([name], [lflaglist], [lfunc], [extralibs], [headercheck], [supvar], [libvar], [enable_var], [cond_name]) # $1 name: name of the feature used in messages and in supvar # $2 lflaglist: the list of linker '-l' options to try, stopping on first success # $3 lfunc: the name of the function to look for when linking # $4 extralibs: optional, additional libraries included in the link check # $5 headercheck: the code that checks for the header # $6 supvar: if the library was found, append $name to this variable, # otherwise append $name to 'unsupported' # $7 libvar: if the library was found, append the working $lflag to this variable # $8 enable_var: variable to check for user's feature request, if empty we use "lowercase(enable_$1)" # $9 cond_name: name of the AC_DEFINE and the AM_CONDITIONAL # if empty, use "uppercase(USE_$1)", if equals "-" same but do not create AM_CONDITIONAL AC_DEFUN([WM_LIB_CHECK], [AC_REQUIRE([_WM_LIB_CHECK_FUNCTS]) m4_pushdef([ENABLEVAR], [m4_ifnblank([$8], [$8], enable_[]m4_tolower($1))])dnl m4_pushdef([CACHEVAR], [wm_cv_libchk_[]m4_tolower($1)])dnl m4_pushdef([USEVAR], [m4_bmatch([$9], [^-?$], [USE_[]m4_toupper($1)], [$9])])dnl AS_IF([test "x$ENABLEVAR" = "xno"], [unsupported="$unsupported $1"], [AC_CACHE_CHECK([for $1 support library], CACHEVAR, [CACHEVAR=no wm_save_LIBS="$LIBS" dnl dnl We check that the library is available m4_bmatch([$2], [ ], dnl Any space in 'lflaglist' means we have a list of flags [for wm_arg in $2 ; do AS_IF([wm_fn_lib_try_link "$3" "$4 $wm_arg"], [CACHEVAR="$wm_arg" ; break]) done], [AS_IF([wm_fn_lib_try_link "$3" "$4 $2"], [CACHEVAR="$2"]) ]) LIBS="$wm_save_LIBS" AS_IF([test "x$ENABLEVAR$CACHEVAR" = "xyesno"], [AC_MSG_ERROR([explicit $1 support requested but no library found])]) dnl dnl A library was found, check if header is available and compile AS_IF([test "x$CACHEVAR" != "xno"], [$5]) ]) AS_IF([test "x$CACHEVAR" = "xno"], [unsupported="$unsupported $1" ENABLEVAR="no"], [$6="$$6 $1" WM_APPEND_ONCE([$CACHEVAR], [$7]) AC_DEFINE(USEVAR, [1], [defined when valid $1 library with header was found])]) ]) m4_bmatch([$9], [^-$], [], [AM_CONDITIONAL(USEVAR, [test "x$ENABLEVAR" != "xno"])])dnl m4_popdef([ENABLEVAR])dnl m4_popdef([CACHEVAR])dnl m4_popdef([USEVAR])dnl ])