mirror of
https://github.com/gryf/wmaker.git
synced 2025-12-19 04:20:27 +01:00
78690de103
This patch brings more consistency in the presentation of comments, including: - 2 line spaces between blocks (M4 macro tend to make the file look quite bulky, so it is making the file more aerated) - fixes in the length of underlining - adding a few comments on the reason of the check to ease maintainance Signed-off-by: Christophe CURIS <christophe.curis@free.fr>
268 lines
9.7 KiB
Plaintext
268 lines
9.7 KiB
Plaintext
# 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]*)?$])
|
|
|
|
|
|
# WM_CHECK_XFT_VERSION(MIN_VERSION, [ACTION-IF-FOUND [,ACTION-IF-NOT-FOUND]])
|
|
#
|
|
# $XFTFLAGS should be defined before calling this macro,
|
|
# else it will not be able to find Xft.h
|
|
#
|
|
AC_DEFUN([WM_CHECK_XFT_VERSION],
|
|
[
|
|
CPPFLAGS_old="$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 <X11/Xlib.h>
|
|
#include <X11/Xft/Xft.h>
|
|
|
|
#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"
|
|
])
|
|
|
|
|
|
# _WM_LIB_CHECK_FUNCTS
|
|
# --------------------
|
|
# (internal shell functions)
|
|
#
|
|
# Create 2 shell functions:
|
|
# wm_fn_imgfmt_try_link: try to link against library
|
|
# wm_fn_imgfmt_try_compile: try to compile against header
|
|
#
|
|
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$ENABLEVAR" != "xno"])])dnl
|
|
m4_popdef([ENABLEVAR])dnl
|
|
m4_popdef([CACHEVAR])dnl
|
|
m4_popdef([USEVAR])dnl
|
|
])
|
|
|
|
|
|
# WM_FUNC_SECURE_GETENV
|
|
# ---------------------
|
|
#
|
|
# Check if the function 'secure_getenv' is available
|
|
# If found, defines HAVE_SECURE_GETENV
|
|
AC_DEFUN_ONCE([WM_FUNC_SECURE_GETENV],
|
|
[AC_REQUIRE([_WM_LIB_CHECK_FUNCTS])
|
|
AC_CACHE_CHECK([for secure_getenv], [wm_cv_func_secure_getenv],
|
|
[wm_cv_func_secure_getenv=no
|
|
wm_save_CFLAGS="$CFLAGS"
|
|
for wm_arg in "% yes" "-D_GNU_SOURCE"; do
|
|
AS_IF([wm_fn_lib_try_compile "stdlib.h" "const char *h;" "h = secure_getenv(\"HOME\")" dnl
|
|
"`echo "$wm_arg" | sed -e 's, *%.*$,,' ` -Werror=implicit-function-declaration"],
|
|
[wm_cv_func_secure_getenv="`echo "$wm_arg" | sed -e 's,^.*% *,,' `"
|
|
break])
|
|
done
|
|
CFLAGS="$wm_save_CFLAGS"])
|
|
AS_IF([test "x$wm_cv_func_secure_getenv" != "xno"],
|
|
[AS_IF([test "x$wm_cv_func_secure_getenv" != "xyes"],
|
|
[WM_APPEND_ONCE([$wm_cv_func_secure_getenv], [CPPFLAGS])])
|
|
AC_DEFINE([HAVE_SECURE_GETENV], [1],
|
|
[defined when GNU's secure_getenv function is available])])
|
|
])
|
|
|
|
|
|
# WM_FUNC_OPEN_NOFOLLOW
|
|
# ---------------------
|
|
#
|
|
# Check if the flag 'O_NOFOLLOW' is supported, for the function 'open'
|
|
AC_DEFUN_ONCE([WM_FUNC_OPEN_NOFOLLOW],
|
|
[AC_CACHE_CHECK([for O_NOFOLLOW], [wm_cv_func_open_nofollow],
|
|
[wm_cv_func_open_nofollow=no
|
|
wm_save_CPPFLAGS="$CPPFLAGS"
|
|
for wm_arg in dnl
|
|
"yes" dnl natively supported, nothing to do
|
|
"-D_POSIX_C_SOURCE=200809L" dnl the flag was officially added in POSIX.1-2008
|
|
"-D_XOPEN_SOURCE=700" dnl for recent glibc
|
|
"-D_GNU_SOURCE" dnl for older glibc
|
|
; do
|
|
AS_IF([test "x$wm_arg" != "xyes"], [CPPFLAGS="$wm_save_CPPFLAGS $wm_arg"])
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM([dnl
|
|
@%:@include <sys/types.h>
|
|
@%:@include <sys/stat.h>
|
|
@%:@include <fcntl.h>], [dnl
|
|
int fd;
|
|
|
|
fd = open("/dev/null", O_RDONLY | O_NOFOLLOW);
|
|
return fd;])], [found=1], [found=0])
|
|
AS_IF([test $found = 1],
|
|
[wm_cv_func_open_nofollow="$wm_arg"
|
|
break])
|
|
done
|
|
CPPFLAGS="$wm_save_CPPFLAGS"])
|
|
AS_CASE([$wm_cv_func_open_nofollow],
|
|
[yes], [],
|
|
[no], [AC_DEFINE([O_NOFOLLOW], [0],
|
|
[defined by configure if the attribute is not defined on your platform])
|
|
AC_MSG_WARN([flag O_NOFOLLOW is not defined on your platform])],
|
|
[CPPFLAGS="$CPPFLAGS $wm_cv_func_open_nofollow"])
|
|
])
|
|
|
|
|
|
# WM_TYPE_SIGNAL
|
|
# --------------
|
|
#
|
|
# Check the return type for the function 'signal'
|
|
# Autoconf now claims we can assume the type is 'void' as it is in the C89 standard,
|
|
# but as Window Maker is supposed to be lightweight enough for old machines, we
|
|
# prefer to keep the check for portability
|
|
AC_DEFUN_ONCE([WM_TYPE_SIGNAL],
|
|
[AC_CACHE_CHECK([return type of signal handlers], [wm_cv_type_signal],
|
|
[AC_COMPILE_IFELSE(
|
|
[AC_LANG_PROGRAM([#include <sys/types.h>
|
|
#include <signal.h>
|
|
],
|
|
[return *(signal (0, 0)) (0) == 1;])],
|
|
[wm_cv_type_signal=int],
|
|
[wm_cv_type_signal=void])dnl
|
|
])
|
|
AC_DEFINE_UNQUOTED([RETSIGTYPE], [$wm_cv_type_signal],
|
|
[Define as the return type of signal handlers (`int' or `void')])dnl
|
|
])
|