1AC_DEFUN([AX_CHECK_GL], 2[AC_REQUIRE([AC_PATH_X])dnl 3AC_REQUIRE([ACX_PTHREAD])dnl 4 5# 6# There isn't a reliable way to know we should use the Apple OpenGL framework 7# without a configure option. A Mac OS X user may have installed an 8# alternative GL implementation (e.g., Mesa), which may or may not depend on X. 9# 10AC_ARG_WITH([apple-opengl-framework], 11 [AC_HELP_STRING([--with-apple-opengl-framework], 12 [use Apple OpenGL framework (Mac OS X only)])]) 13if test "X$with_apple_opengl_framework" = "Xyes"; then 14 AC_DEFINE([HAVE_APPLE_OPENGL_FRAMEWORK], [1], 15 [Use the Apple OpenGL framework.]) 16 GL_CFLAGS="-framework OpenGL" 17else 18 GL_CFLAGS="${PTHREAD_CFLAGS}" 19 GL_LIBS="${PTHREAD_LIBS} -lm" 20 21 # 22 # Use x_includes and x_libraries if they have been set (presumably by 23 # AC_PATH_X). 24 # 25 if test "X$no_x" != "Xyes"; then 26 if test -n "$x_includes"; then 27 GL_CFLAGS="-I${x_includes} ${GL_CFLAGS}" 28 fi 29 if test -n "$x_libraries"; then 30 GL_LIBS="-L${x_libraries} -lX11 ${GL_LIBS}" 31 fi 32 fi 33 34 AC_LANG_PUSH(C) 35 36 AC_CHECK_HEADERS([windows.h]) 37 38 AC_CACHE_CHECK([for OpenGL library], [ax_cv_check_gl_libgl], 39 [ax_cv_check_gl_libgl="no" 40 ax_save_CPPFLAGS="${CPPFLAGS}" 41 CPPFLAGS="${GL_CFLAGS} ${CPPFLAGS}" 42 ax_save_LIBS="${LIBS}" 43 LIBS="" 44 ax_check_libs="-lopengl32 -lGL" 45 for ax_lib in ${ax_check_libs}; do 46 if test "X$CC" = "Xcl"; then 47 ax_try_lib=`echo $ax_lib | sed -e 's/^-l//' -e 's/$/.lib/'` 48 else 49 ax_try_lib="${ax_lib}" 50 fi 51 LIBS="${ax_try_lib} ${GL_LIBS} ${ax_save_LIBS}" 52 AC_TRY_LINK([ 53# if HAVE_WINDOWS_H && defined(_WIN32) 54# include <windows.h> 55# endif 56# include <GL/gl.h> 57], 58 [glBegin(0)], 59 [ax_cv_check_gl_libgl="${ax_try_lib}"; break]) 60 done 61 LIBS=${ax_save_LIBS} 62 CPPFLAGS=${ax_save_CPPFLAGS}]) 63 64 if test "X${ax_cv_check_gl_libgl}" = "Xno"; then 65 no_gl="yes" 66 GL_CFLAGS="" 67 GL_LIBS="" 68 else 69 GL_LIBS="${ax_cv_check_gl_libgl} ${GL_LIBS}" 70 fi 71 AC_LANG_POP(C) 72fi 73 74AC_SUBST([GL_CFLAGS]) 75AC_SUBST([GL_LIBS]) 76])dnl 77