1 # wm_xext_check.m4 - Macros to check for X extensions support libraries
3 # Copyright (c) 2013 Christophe CURIS
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 2 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License along
16 # with this program; if not, write to the Free Software Foundation, Inc.,
17 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19 # WM_XEXT_CHECK_XSHAPE
20 # --------------------
22 # Check for the X Shaped Window extension
23 # The check depends on variable 'enable_xshape' being either:
24 # yes - detect, fail if not found
25 # no - do not detect, disable support
26 # auto - detect, disable if not found
28 # When found, append appropriate stuff in XLIBS, and append info to
29 # the variable 'supported_xext'
30 # When not found, append info to variable 'unsupported'
31 AC_DEFUN_ONCE([WM_XEXT_CHECK_XSHAPE],
32 [WM_LIB_CHECK([XShape], [-lXext], [XShapeSelectInput], [$XLIBS],
33 [wm_save_CFLAGS="$CFLAGS"
34 AS_IF([wm_fn_lib_try_compile "X11/extensions/shape.h" "Window win;" "XShapeSelectInput(NULL, win, 0)" ""],
36 [AC_MSG_ERROR([found $CACHEVAR but cannot compile using XShape header])])
37 CFLAGS="$wm_save_CFLAGS"],
38 [supported_xext], [XLIBS], [enable_shape], [-])dnl
45 # Check for the MIT-SHM extension for Shared Memory support
46 # The check depends on variable 'enable_shm' being either:
47 # yes - detect, fail if not found
48 # no - do not detect, disable support
49 # auto - detect, disable if not found
51 # When found, append appropriate stuff in XLIBS, and append info to
52 # the variable 'supported_xext'
53 # When not found, append info to variable 'unsupported'
54 AC_DEFUN_ONCE([WM_XEXT_CHECK_XSHM],
55 [WM_LIB_CHECK([XShm], [-lXext], [XShmAttach], [$XLIBS],
56 [wm_save_CFLAGS="$CFLAGS"
57 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([dnl
58 @%:@include <X11/Xlib.h>
59 @%:@include <X11/extensions/XShm.h>
63 XShmAttach(NULL, &si);])],
65 [AC_MSG_ERROR([found $CACHEVAR but cannot compile using XShm header])])
66 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([dnl
67 @%:@include <sys/ipc.h>
68 @%:@include <sys/shm.h>
70 shmget(IPC_PRIVATE, 1024, IPC_CREAT);])],
72 [AC_MSG_ERROR([found $CACHEVAR but cannot compile using ipc/shm headers])])
73 CFLAGS="$wm_save_CFLAGS"],
74 [supported_xext], [XLIBS], [enable_shm], [-])dnl
81 # Check for the libXmu (X Misceleanous Utilities)
82 # When found, append it to LIBXMU
83 # When not found, generate an error because we have no work-around for it
84 AC_DEFUN_ONCE([WM_EXT_CHECK_XMU],
85 [AC_CACHE_CHECK([for Xmu library], [wm_cv_xext_xmu],
88 dnl We check that the library is available
90 AS_IF([wm_fn_lib_try_link "XmuLookupStandardColormap" "-lXmu"],
91 [wm_cv_xext_xmu="-lXmu"])
93 AS_IF([test "x$wm_cv_xext_xmu" != "xno"],
95 dnl A library was found, check if header is available and compile
96 wm_save_CFLAGS="$CFLAGS"
97 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([dnl
98 @%:@include <X11/Xlib.h>
99 @%:@include <X11/Xutil.h>
100 @%:@include <X11/Xmu/StdCmap.h>
105 XmuLookupStandardColormap(dpy, 0, 0, 0, prop, False, True);]) ],
107 [AC_MSG_ERROR([found $wm_cv_xext_xmu but cannot compile with the header])])
108 CFLAGS="$wm_save_CFLAGS"])
110 dnl The cached check already reported problems when not found
111 AS_IF([test "x$wm_cv_xext_xmu" = "xno"],
113 unsupported="$unsupported Xmu"],
114 [AC_DEFINE([HAVE_LIBXMU], [1],
115 [defined when the libXmu library was found])
116 LIBXMU="$wm_cv_xext_xmu"
117 supported_xext="$supported_xext Xmu"])
122 # WM_XEXT_CHECK_XINERAMA
123 # ----------------------
125 # Check for the Xinerama extension for multiscreen-as-one support
126 # The check depends on variable 'enable_xinerama' being either:
127 # yes - detect, fail if not found
128 # no - do not detect, disable support
129 # auto - detect, disable if not found
131 # When found, append appropriate stuff in LIBXINERAMA, and append info to
132 # the variable 'supported_xext'
133 # When not found, append info to variable 'unsupported'
134 AC_DEFUN_ONCE([WM_XEXT_CHECK_XINERAMA],
136 AS_IF([test "x$enable_xinerama" = "xno"],
137 [unsupported="$unsupported Xinerama"],
138 [AC_CACHE_CHECK([for Xinerama support library], [wm_cv_xext_xinerama],
139 [wm_cv_xext_xinerama=no
141 dnl We check that the library is available
144 dnl Lib flag % Function name % info
145 "-lXinerama % XineramaQueryScreens" dnl
146 "-lXext % XineramaGetInfo % solaris" ; do
147 AS_IF([wm_fn_lib_try_link "`echo "$wm_arg" | dnl
148 sed -e 's,^[[^%]]*% *,,' | sed -e 's, *%.*$,,' `" dnl
149 "$XLFLAGS $XLIBS `echo "$wm_arg" | sed -e 's, *%.*$,,' `"],
150 [wm_cv_xext_xinerama="`echo "$wm_arg" | sed -e 's, *%[[^%]]*, ,' `"
154 AS_IF([test "x$wm_cv_xext_xinerama" = "xno"],
155 [AS_IF([test "x$enable_xinerama" = "xyesno"],
156 [AC_MSG_ERROR([explicit Xinerama support requested but no library found])])],
158 dnl A library was found, check if header is available and compiles
159 wm_save_CFLAGS="$CFLAGS"
160 AS_CASE([`echo "$wm_cv_xext_xinerama" | sed -e 's,^[[^%]]*,,' `],
161 [*solaris*], [wm_header="X11/extensions/xinerama.h" ; wm_fct="XineramaGetInfo(NULL, 0, NULL, NULL, &intval)"],
162 [wm_header="X11/extensions/Xinerama.h" ; wm_fct="XineramaQueryScreens(NULL, &intval)"])
163 AS_IF([wm_fn_lib_try_compile "$wm_header" "int intval;" "$wm_fct" ""],
165 [AC_MSG_ERROR([found $wm_cv_xext_xinerama but cannot compile with the header])])
166 AS_UNSET([wm_header])
168 CFLAGS="$wm_save_CFLAGS" dnl
171 AS_IF([test "x$wm_cv_xext_xinerama" = "xno"],
172 [unsupported="$unsupported Xinerama"
173 enable_xinerama="no"],
174 [LIBXINERAMA="`echo "$wm_cv_xext_xinerama" | sed -e 's, *%.*$,,' `"
175 AC_DEFINE([USE_XINERAMA], [1],
176 [defined when usable Xinerama library with header was found])
177 AS_CASE([`echo "$wm_cv_xext_xinerama" | sed -e 's,^[[^%]]*,,' `],
178 [*solaris*], [AC_DEFINE([SOLARIS_XINERAMA], [1],
179 [defined when the Solaris Xinerama extension was detected])])
180 supported_xext="$supported_xext Xinerama"])
182 AC_SUBST(LIBXINERAMA)dnl
186 # WM_XEXT_CHECK_XRANDR
187 # --------------------
189 # Check for the X RandR (Resize-and-Rotate) extension
190 # The check depends on variable 'enable_randr' being either:
191 # yes - detect, fail if not found
192 # no - do not detect, disable support
193 # auto - detect, disable if not found
195 # When found, append appropriate stuff in LIBXRANDR, and append info to
196 # the variable 'supported_xext'
197 # When not found, append info to variable 'unsupported'
198 AC_DEFUN_ONCE([WM_XEXT_CHECK_XRANDR],
199 [WM_LIB_CHECK([RandR], [-lXrandr], [XRRQueryExtension], [$XLIBS],
200 [wm_save_CFLAGS="$CFLAGS"
201 AS_IF([wm_fn_lib_try_compile "X11/extensions/Xrandr.h" "Display *dpy;" "XRRQueryExtension(dpy, NULL, NULL)" ""],
203 [AC_MSG_ERROR([found $CACHEVAR but cannot compile using XRandR header])])
204 CFLAGS="$wm_save_CFLAGS"],
205 [supported_xext], [LIBXRANDR], [], [-])dnl
206 AC_SUBST([LIBXRANDR])dnl