1 # Copyright 2005 Adam Jackson.
3 # Permission is hereby granted, free of charge, to any person obtaining a
4 # copy of this software and associated documentation files (the "Software"),
5 # to deal in the Software without restriction, including without limitation
6 # on the rights to use, copy, modify, merge, publish, distribute, sub
7 # license, and/or sell copies of the Software, and to permit persons to whom
8 # the Software is furnished to do so, subject to the following conditions:
10 # The above copyright notice and this permission notice (including the next
11 # paragraph) shall be included in all copies or substantial portions of the
14 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 # FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
17 # ADAM JACKSON BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
18 # IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19 # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 AC_INIT([libdrm], 2.4.0, [dri-devel@lists.sourceforge.net], libdrm)
23 AC_CONFIG_SRCDIR([Makefile.am])
24 AM_INIT_AUTOMAKE([dist-bzip2])
26 AM_CONFIG_HEADER([libdrm/config.h])
35 pkgconfigdir=${libdir}/pkgconfig
36 AC_SUBST(pkgconfigdir)
37 AC_ARG_ENABLE(udev, AS_HELP_STRING([--enable-udev],
38 [Enable support for using udev instead of mknod (default: disabled)]),
39 [UDEV=$enableval], [UDEV=no])
42 dnl ===========================================================================
43 dnl check compiler flags
44 AC_DEFUN([LIBDRM_CC_TRY_FLAG], [
45 AC_MSG_CHECKING([whether $CC supports $1])
47 libdrm_save_CFLAGS="$CFLAGS"
50 AC_COMPILE_IFELSE([ ], [libdrm_cc_flag=yes], [libdrm_cc_flag=no])
51 CFLAGS="$libdrm_save_CFLAGS"
53 if test "x$libdrm_cc_flag" = "xyes"; then
54 ifelse([$2], , :, [$2])
56 ifelse([$3], , :, [$3])
58 AC_MSG_RESULT([$libdrm_cc_flag])
61 dnl Use lots of warning flags with with gcc and compatible compilers
63 dnl Note: if you change the following variable, the cache is automatically
64 dnl skipped and all flags rechecked. So there's no need to do anything
65 dnl else. If for any reason you need to force a recheck, just change
66 dnl MAYBE_WARN in an ignorable way (like adding whitespace)
68 MAYBE_WARN="-Wall -Wextra \
69 -Wsign-compare -Werror-implicit-function-declaration \
70 -Wpointer-arith -Wwrite-strings -Wstrict-prototypes \
71 -Wmissing-prototypes -Wmissing-declarations -Wnested-externs \
72 -Wpacked -Wswitch-enum -Wmissing-format-attribute \
73 -Wstrict-aliasing=2 -Winit-self -Wunsafe-loop-optimizations \
74 -Wdeclaration-after-statement -Wold-style-definition \
75 -Wno-missing-field-initializers -Wno-unused-parameter \
76 -Wno-attributes -Wno-long-long -Winline"
78 # invalidate cached value if MAYBE_WARN has changed
79 if test "x$libdrm_cv_warn_maybe" != "x$MAYBE_WARN"; then
80 unset libdrm_cv_warn_cflags
82 AC_CACHE_CHECK([for supported warning flags], libdrm_cv_warn_cflags, [
86 # Some warning options are not supported by all versions of
87 # gcc, so test all desired options against the current
90 # Note that there are some order dependencies
91 # here. Specifically, an option that disables a warning will
92 # have no net effect if a later option then enables that
93 # warnings, (perhaps implicitly). So we put some grouped
94 # options (-Wall and -Wextra) up front and the -Wno options
97 for W in $MAYBE_WARN; do
98 LIBDRM_CC_TRY_FLAG([$W], [WARN_CFLAGS="$WARN_CFLAGS $W"])
101 libdrm_cv_warn_cflags=$WARN_CFLAGS
102 libdrm_cv_warn_maybe=$MAYBE_WARN
104 AC_MSG_CHECKING([which warning flags were supported])])
105 WARN_CFLAGS="$libdrm_cv_warn_cflags"
107 if test "x$UDEV" = xyes; then
108 AC_DEFINE(UDEV, 1, [Have UDEV support])
111 AC_SUBST(WARN_CFLAGS)
115 libdrm/intel/Makefile