1AC_DEFUN([AX_LANG_COMPILER_MS], 2[AC_CACHE_CHECK([whether we are using the Microsoft _AC_LANG compiler], 3 [ax_cv_[]_AC_LANG_ABBREV[]_compiler_ms], 4[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[#ifndef _MSC_VER 5 choke me 6#endif 7]])], 8 [ax_compiler_ms=yes], 9 [ax_compiler_ms=no]) 10ax_cv_[]_AC_LANG_ABBREV[]_compiler_ms=$ax_compiler_ms 11])]) 12 13AC_DEFUN([ACX_PTHREAD], [ 14AC_REQUIRE([AC_CANONICAL_HOST]) 15AC_LANG_SAVE 16AC_LANG_C 17acx_pthread_ok=no 18 19# We used to check for pthread.h first, but this fails if pthread.h 20# requires special compiler flags (e.g. on True64 or Sequent). 21# It gets checked for in the link test anyway. 22 23# First of all, check if the user has set any of the PTHREAD_LIBS, 24# etcetera environment variables, and if threads linking works using 25# them: 26if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then 27 save_CFLAGS="$CFLAGS" 28 CFLAGS="$CFLAGS $PTHREAD_CFLAGS" 29 save_LIBS="$LIBS" 30 LIBS="$PTHREAD_LIBS $LIBS" 31 AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS]) 32 AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes) 33 AC_MSG_RESULT($acx_pthread_ok) 34 if test x"$acx_pthread_ok" = xno; then 35 PTHREAD_LIBS="" 36 PTHREAD_CFLAGS="" 37 fi 38 LIBS="$save_LIBS" 39 CFLAGS="$save_CFLAGS" 40fi 41 42# We must check for the threads library under a number of different 43# names; the ordering is very important because some systems 44# (e.g. DEC) have both -lpthread and -lpthreads, where one of the 45# libraries is broken (non-POSIX). 46 47# Create a list of thread flags to try. Items starting with a "-" are 48# C compiler flags, and other items are library names, except for "none" 49# which indicates that we try without any flags at all, and "pthread-config" 50# which is a program returning the flags for the Pth emulation library. 51 52acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config" 53 54# The ordering *is* (sometimes) important. Some notes on the 55# individual items follow: 56 57# pthreads: AIX (must check this before -lpthread) 58# none: in case threads are in libc; should be tried before -Kthread and 59# other compiler flags to prevent continual compiler warnings 60# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h) 61# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able) 62# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread) 63# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads) 64# -pthreads: Solaris/gcc 65# -mthreads: Mingw32/gcc, Lynx/gcc 66# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it 67# doesn't hurt to check since this sometimes defines pthreads too; 68# also defines -D_REENTRANT) 69# ... -mt is also the pthreads flag for HP/aCC 70# pthread: Linux, etcetera 71# --thread-safe: KAI C++ 72# pthread-config: use pthread-config program (for GNU Pth library) 73 74case "${host_cpu}-${host_os}" in 75 *solaris*) 76 77 # On Solaris (at least, for some versions), libc contains stubbed 78 # (non-functional) versions of the pthreads routines, so link-based 79 # tests will erroneously succeed. (We need to link with -pthreads/-mt/ 80 # -lpthread.) (The stubs are missing pthread_cleanup_push, or rather 81 # a function called by this macro, so we could check for that, but 82 # who knows whether they'll stub that too in a future libc.) So, 83 # we'll just look for -pthreads and -lpthread first: 84 85 acx_pthread_flags="-pthreads pthread -mt -pthread $acx_pthread_flags" 86 ;; 87esac 88 89if test x"$acx_pthread_ok" = xno; then 90for flag in $acx_pthread_flags; do 91 92 case $flag in 93 none) 94 AC_MSG_CHECKING([whether pthreads work without any flags]) 95 ;; 96 97 -*) 98 AC_MSG_CHECKING([whether pthreads work with $flag]) 99 PTHREAD_CFLAGS="$flag" 100 ;; 101 102 pthread-config) 103 AC_CHECK_PROG(acx_pthread_config, pthread-config, yes, no) 104 if test x"$acx_pthread_config" = xno; then continue; fi 105 PTHREAD_CFLAGS="`pthread-config --cflags`" 106 PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`" 107 ;; 108 109 *) 110 AC_MSG_CHECKING([for the pthreads library -l$flag]) 111 PTHREAD_LIBS="-l$flag" 112 ;; 113 esac 114 115 save_LIBS="$LIBS" 116 save_CFLAGS="$CFLAGS" 117 LIBS="$PTHREAD_LIBS $LIBS" 118 CFLAGS="$CFLAGS $PTHREAD_CFLAGS" 119 120 # Check for various functions. We must include pthread.h, 121 # since some functions may be macros. (On the Sequent, we 122 # need a special flag -Kthread to make this header compile.) 123 # We check for pthread_join because it is in -lpthread on IRIX 124 # while pthread_create is in libc. We check for pthread_attr_init 125 # due to DEC craziness with -lpthreads. We check for 126 # pthread_cleanup_push because it is one of the few pthread 127 # functions on Solaris that doesn't have a non-functional libc stub. 128 # We try pthread_create on general principles. 129 AC_TRY_LINK([#include <pthread.h>], 130 [pthread_t th; pthread_join(th, 0); 131 pthread_attr_init(0); pthread_cleanup_push(0, 0); 132 pthread_create(0,0,0,0); pthread_cleanup_pop(0); ], 133 [acx_pthread_ok=yes]) 134 135 LIBS="$save_LIBS" 136 CFLAGS="$save_CFLAGS" 137 138 AC_MSG_RESULT($acx_pthread_ok) 139 if test "x$acx_pthread_ok" = xyes; then 140 break; 141 fi 142 143 PTHREAD_LIBS="" 144 PTHREAD_CFLAGS="" 145done 146fi 147 148# Various other checks: 149if test "x$acx_pthread_ok" = xyes; then 150 save_LIBS="$LIBS" 151 LIBS="$PTHREAD_LIBS $LIBS" 152 save_CFLAGS="$CFLAGS" 153 CFLAGS="$CFLAGS $PTHREAD_CFLAGS" 154 155 # Detect AIX lossage: JOINABLE attribute is called UNDETACHED. 156 AC_MSG_CHECKING([for joinable pthread attribute]) 157 attr_name=unknown 158 for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do 159 AC_TRY_LINK([#include <pthread.h>], [int attr=$attr; return attr;], 160 [attr_name=$attr; break]) 161 done 162 AC_MSG_RESULT($attr_name) 163 if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then 164 AC_DEFINE_UNQUOTED(PTHREAD_CREATE_JOINABLE, $attr_name, 165 [Define to necessary symbol if this constant 166 uses a non-standard name on your system.]) 167 fi 168 169 AC_MSG_CHECKING([if more special flags are required for pthreads]) 170 flag=no 171 case "${host_cpu}-${host_os}" in 172 *-aix* | *-freebsd* | *-darwin*) flag="-D_THREAD_SAFE";; 173 *solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";; 174 esac 175 AC_MSG_RESULT(${flag}) 176 if test "x$flag" != xno; then 177 PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS" 178 fi 179 180 LIBS="$save_LIBS" 181 CFLAGS="$save_CFLAGS" 182 183 # More AIX lossage: must compile with cc_r 184 AC_CHECK_PROG(PTHREAD_CC, cc_r, cc_r, ${CC}) 185else 186 PTHREAD_CC="$CC" 187fi 188 189AC_SUBST(PTHREAD_LIBS) 190AC_SUBST(PTHREAD_CFLAGS) 191AC_SUBST(PTHREAD_CC) 192 193# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND: 194if test x"$acx_pthread_ok" = xyes; then 195 ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1]) 196 : 197else 198 acx_pthread_ok=no 199 $2 200fi 201AC_LANG_RESTORE 202])dnl ACX_PTHREAD 203 204AC_DEFUN([AX_CHECK_GL], 205[AC_REQUIRE([AC_PATH_X])dnl 206AC_REQUIRE([ACX_PTHREAD])dnl 207 208# 209# There isn't a reliable way to know we should use the Apple OpenGL framework 210# without a configure option. A Mac OS X user may have installed an 211# alternative GL implementation (e.g., Mesa), which may or may not depend on X. 212# 213AC_ARG_WITH([apple-opengl-framework], 214 [AC_HELP_STRING([--with-apple-opengl-framework], 215 [use Apple OpenGL framework (Mac OS X only)])]) 216if test "X$with_apple_opengl_framework" = "Xyes"; then 217 AC_DEFINE([HAVE_APPLE_OPENGL_FRAMEWORK], [1], 218 [Use the Apple OpenGL framework.]) 219 GL_LIBS="-framework OpenGL" 220else 221 AC_LANG_PUSH(C) 222 223 AX_LANG_COMPILER_MS 224 if test X$ax_compiler_ms = Xno; then 225 GL_CFLAGS="${PTHREAD_CFLAGS}" 226 GL_LIBS="${PTHREAD_LIBS} -lm" 227 fi 228 229 # 230 # Use x_includes and x_libraries if they have been set (presumably by 231 # AC_PATH_X). 232 # 233 if test "X$no_x" != "Xyes"; then 234 if test -n "$x_includes"; then 235 GL_CFLAGS="-I${x_includes} ${GL_CFLAGS}" 236 fi 237 if test -n "$x_libraries"; then 238 GL_LIBS="-L${x_libraries} -lX11 ${GL_LIBS}" 239 fi 240 fi 241 242 AC_CHECK_HEADERS([windows.h]) 243 244 AC_CACHE_CHECK([for OpenGL library], [ax_cv_check_gl_libgl], 245 [ax_cv_check_gl_libgl="no" 246 ax_save_CPPFLAGS="${CPPFLAGS}" 247 CPPFLAGS="${GL_CFLAGS} ${CPPFLAGS}" 248 ax_save_LIBS="${LIBS}" 249 LIBS="" 250 ax_check_libs="-lopengl32 -lGL" 251 for ax_lib in ${ax_check_libs}; do 252 if test X$ax_compiler_ms = Xyes; then 253 ax_try_lib=`echo $ax_lib | sed -e 's/^-l//' -e 's/$/.lib/'` 254 else 255 ax_try_lib="${ax_lib}" 256 fi 257 LIBS="${ax_try_lib} ${GL_LIBS} ${ax_save_LIBS}" 258 AC_LINK_IFELSE( 259 [AC_LANG_PROGRAM([[ 260# if HAVE_WINDOWS_H && defined(_WIN32) 261# include <windows.h> 262# endif 263# include <GL/gl.h>]], 264 [[glBegin(0)]])], 265 [ax_cv_check_gl_libgl="${ax_try_lib}"; break]) 266 done 267 LIBS=${ax_save_LIBS} 268 CPPFLAGS=${ax_save_CPPFLAGS}]) 269 270 if test "X${ax_cv_check_gl_libgl}" = "Xno"; then 271 no_gl="yes" 272 GL_CFLAGS="" 273 GL_LIBS="" 274 else 275 GL_LIBS="${ax_cv_check_gl_libgl} ${GL_LIBS}" 276 fi 277 AC_LANG_POP(C) 278fi 279 280AC_SUBST([GL_CFLAGS]) 281AC_SUBST([GL_LIBS]) 282])dnl 283