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https://github.com/gryf/wmaker.git
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101e24b0be
As reported by David Maciejak, when libXinerama was not found on the system, the configure script still tried to search for associated header and stopped all with unclear message. The proper behaviour that was expected is to accept silently that libXinerama may not be missing, and only stop compilation when the lib is present but not its header.
202 lines
7.7 KiB
Plaintext
202 lines
7.7 KiB
Plaintext
# wm_xext_check.m4 - Macros to check for X extensions support libraries
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#
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# Copyright (c) 2013 Christophe CURIS
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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# WM_XEXT_CHECK_XSHAPE
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# --------------------
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#
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# Check for the X Shaped Window extension
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# The check depends on variable 'enable_xshape' being either:
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# yes - detect, fail if not found
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# no - do not detect, disable support
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# auto - detect, disable if not found
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#
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# When found, append appropriate stuff in XLIBS, and append info to
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# the variable 'supported_xext'
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# When not found, append info to variable 'unsupported'
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AC_DEFUN_ONCE([WM_XEXT_CHECK_XSHAPE],
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[WM_LIB_CHECK([XShape], [-lXext], [XShapeSelectInput], [$XLIBS],
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[wm_save_CFLAGS="$CFLAGS"
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AS_IF([wm_fn_lib_try_compile "X11/extensions/shape.h" "Window win;" "XShapeSelectInput(NULL, win, 0)" ""],
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[],
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[AC_MSG_ERROR([found $CACHEVAR but cannot compile using XShape header])])
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CFLAGS="$wm_save_CFLAGS"],
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[supported_xext], [XLIBS], [enable_shape], [-])dnl
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]) dnl AC_DEFUN
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# WM_XEXT_CHECK_XSHM
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# ------------------
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#
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# Check for the MIT-SHM extension for Shared Memory support
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# The check depends on variable 'enable_shm' being either:
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# yes - detect, fail if not found
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# no - do not detect, disable support
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# auto - detect, disable if not found
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#
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# When found, append appropriate stuff in XLIBS, and append info to
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# the variable 'supported_xext'
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# When not found, append info to variable 'unsupported'
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AC_DEFUN_ONCE([WM_XEXT_CHECK_XSHM],
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[WM_LIB_CHECK([XShm], [-lXext], [XShmAttach], [$XLIBS],
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[wm_save_CFLAGS="$CFLAGS"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([dnl
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@%:@include <X11/Xlib.h>
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@%:@include <X11/extensions/XShm.h>
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], [dnl
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XShmSegmentInfo si;
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XShmAttach(NULL, &si);])],
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[],
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[AC_MSG_ERROR([found $CACHEVAR but cannot compile using XShm header])])
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([dnl
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@%:@include <sys/ipc.h>
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@%:@include <sys/shm.h>
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], [dnl
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shmget(IPC_PRIVATE, 1024, IPC_CREAT);])],
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[],
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[AC_MSG_ERROR([found $CACHEVAR but cannot compile using ipc/shm headers])])
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CFLAGS="$wm_save_CFLAGS"],
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[supported_xext], [XLIBS], [enable_shm], [-])dnl
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]) dnl AC_DEFUN
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# WM_XEXT_CHECK_XMU
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# -----------------
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#
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# Check for the libXmu (X Misceleanous Utilities)
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# When found, append it to LIBXMU
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# When not found, generate an error because we have no work-around for it
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AC_DEFUN_ONCE([WM_EXT_CHECK_XMU],
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[AC_CACHE_CHECK([for Xmu library], [wm_cv_xext_xmu],
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[wm_cv_xext_xmu=no
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dnl
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dnl We check that the library is available
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wm_save_LIBS="$LIBS"
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AS_IF([wm_fn_lib_try_link "XmuLookupStandardColormap" "-lXmu"],
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[wm_cv_xext_xmu="-lXmu"])
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LIBS="$wm_save_LIBS"
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AS_IF([test "x$wm_cv_xext_xmu" = "xno"],
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[AC_MSG_ERROR([library Xmu not found])])
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dnl
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dnl A library was found, check if header is available and compile
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wm_save_CFLAGS="$CFLAGS"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([dnl
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@%:@include <X11/Xlib.h>
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@%:@include <X11/Xutil.h>
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@%:@include <X11/Xmu/StdCmap.h>
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Display *dpy;
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Atom prop;
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], [dnl
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XmuLookupStandardColormap(dpy, 0, 0, 0, prop, False, True);]) ],
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[],
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[AC_MSG_ERROR([found $wm_cv_xext_xmu but cannot compile with the header])])
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CFLAGS="$wm_save_CFLAGS"])
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dnl The cached check already reported problems when not found
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LIBXMU="$wm_cv_xext_xmu"
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AC_SUBST(LIBXMU)dnl
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])
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# WM_XEXT_CHECK_XINERAMA
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# ----------------------
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#
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# Check for the Xinerama extension for multiscreen-as-one support
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# The check depends on variable 'enable_xinerama' being either:
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# yes - detect, fail if not found
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# no - do not detect, disable support
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# auto - detect, disable if not found
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#
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# When found, append appropriate stuff in LIBXINERAMA, and append info to
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# the variable 'supported_xext'
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# When not found, append info to variable 'unsupported'
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AC_DEFUN_ONCE([WM_XEXT_CHECK_XINERAMA],
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[LIBXINERAMA=""
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AS_IF([test "x$enable_xinerama" = "xno"],
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[unsupported="$unsupported Xinerama"],
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[AC_CACHE_CHECK([for Xinerama support library], [wm_cv_xext_xinerama],
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[wm_cv_xext_xinerama=no
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dnl
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dnl We check that the library is available
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wm_save_LIBS="$LIBS"
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for wm_arg in dnl
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dnl Lib flag % Function name % info
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"-lXinerama % XineramaQueryScreens" dnl
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"-lXext % XineramaGetInfo % solaris" ; do
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AS_IF([wm_fn_lib_try_link "`echo "$wm_arg" | dnl
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sed -e 's,^[[^%]]*% *,,' | sed -e 's, *%.*$,,' `" dnl
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"$XLFLAGS $XLIBS `echo "$wm_arg" | sed -e 's, *%.*$,,' `"],
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[wm_cv_xext_xinerama="`echo "$wm_arg" | sed -e 's, *%[[^%]]*, ,' `"
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break])
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done
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LIBS="$wm_save_LIBS"
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AS_IF([test "x$wm_cv_xext_xinerama" = "xno"],
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[AS_IF([test "x$enable_xinerama" = "xyesno"],
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[AC_MSG_ERROR([explicit Xinerama support requested but no library found])])],
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[dnl
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dnl A library was found, check if header is available and compiles
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wm_save_CFLAGS="$CFLAGS"
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AS_CASE([`echo "$wm_cv_xext_xinerama" | sed -e 's,^[[^%]]*,,' `],
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[*solaris*], [wm_header="X11/extensions/xinerama.h" ; wm_fct="XineramaGetInfo(NULL, 0, NULL, NULL, &intval)"],
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[wm_header="X11/extensions/Xinerama.h" ; wm_fct="XineramaQueryScreens(NULL, &intval)"])
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AS_IF([wm_fn_lib_try_compile "$wm_header" "int intval;" "$wm_fct" ""],
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[],
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[AC_MSG_ERROR([found $wm_cv_xext_xinerama but cannot compile with the header])])
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AS_UNSET([wm_header])
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AS_UNSET([wm_fct])
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CFLAGS="$wm_save_CFLAGS" dnl
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]) dnl
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])
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AS_IF([test "x$wm_cv_xext_xinerama" = "xno"],
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[unsupported="$unsupported Xinerama"
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enable_xinerama="no"],
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[LIBXINERAMA="`echo "$wm_cv_xext_xinerama" | sed -e 's, *%.*$,,' `"
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AC_DEFINE([USE_XINERAMA], [1],
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[defined when usable Xinerama library with header was found])
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AS_CASE([`echo "$wm_cv_xext_xinerama" | sed -e 's,^[[^%]]*,,' `],
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[*solaris*], [AC_DEFINE([SOLARIS_XINERAMA], [1],
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[defined when the Solaris Xinerama extension was detected])])
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supported_xext="$supported_xext Xinerama"])
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])
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AC_SUBST(LIBXINERAMA)dnl
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])
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# WM_XEXT_CHECK_XRANDR
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# --------------------
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#
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# Check for the X RandR (Resize-and-Rotate) extension
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# The check depends on variable 'enable_xrandr' being either:
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# yes - detect, fail if not found
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# no - do not detect, disable support
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# auto - detect, disable if not found
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#
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# When found, append appropriate stuff in LIBXRANDR, and append info to
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# the variable 'supported_xext'
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# When not found, append info to variable 'unsupported'
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AC_DEFUN_ONCE([WM_XEXT_CHECK_XRANDR],
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[WM_LIB_CHECK([XRandR], [-lXrandr], [XRRQueryExtension], [$XLIBS],
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[wm_save_CFLAGS="$CFLAGS"
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AS_IF([wm_fn_lib_try_compile "X11/extensions/Xrandr.h" "Display *dpy;" "XRRQueryExtension(dpy, NULL, NULL)" ""],
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[],
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[AC_MSG_ERROR([found $CACHEVAR but cannot compile using XRandR header])])
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CFLAGS="$wm_save_CFLAGS"],
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[supported_xext], [LIBXRANDR], [], [-])dnl
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AC_SUBST([LIBXRANDR])dnl
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]) dnl AC_DEFUN
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