| 1 | dnl Available from the GNU Autoconf Macro Archive at:
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| 2 | dnl http://www.gnu.org/software/ac-archive/htmldoc/ax_check_gl.html
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| 3 | dnl
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| 4 | AC_DEFUN([AX_CHECK_GL],
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| 5 | [AC_REQUIRE([AC_PATH_X])dnl
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| 6 | AC_REQUIRE([ACX_PTHREAD])dnl
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| 7 |
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| 8 | #
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| 9 | # There isn't a reliable way to know we should use the Apple OpenGL framework
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| 10 | # without a configure option. A Mac OS X user may have installed an
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| 11 | # alternative GL implementation (e.g., Mesa), which may or may not depend on X.
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| 12 | #
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| 13 | AC_ARG_WITH([apple-opengl-framework],
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| 14 | [AC_HELP_STRING([--with-apple-opengl-framework],
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| 15 | [use Apple OpenGL framework (Mac OS X only)])])
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| 16 | if test "X$with_apple_opengl_framework" = "Xyes"; then
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| 17 | AC_DEFINE([HAVE_APPLE_OPENGL_FRAMEWORK], [1],
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| 18 | [Use the Apple OpenGL framework.])
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| 19 | GL_LIBS="-framework OpenGL"
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| 20 | else
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| 21 | AC_LANG_PUSH(C)
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| 22 |
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| 23 | AX_LANG_COMPILER_MS
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| 24 | if test X$ax_compiler_ms = Xno; then
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| 25 | GL_CFLAGS="${PTHREAD_CFLAGS}"
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| 26 | GL_CXXFLAGS="${PTHREAD_CXXFLAGS}"
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| 27 | GL_LIBS="${PTHREAD_LIBS} -lm"
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| 28 | fi
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| 29 |
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| 30 | #
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| 31 | # Use x_includes and x_libraries if they have been set (presumably by
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| 32 | # AC_PATH_X).
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| 33 | #
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| 34 | if test "X$no_x" != "Xyes"; then
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| 35 | if test -n "$x_includes"; then
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| 36 | GL_CFLAGS="-I${x_includes} ${GL_CFLAGS}"
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| 37 | GL_CXXFLAGS="-I${x_includes} ${GL_CXXFLAGS}"
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| 38 | fi
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| 39 | if test -n "$x_libraries"; then
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| 40 | GL_LIBS="-L${x_libraries} -lX11 ${GL_LIBS}"
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| 41 | fi
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| 42 | fi
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| 43 |
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| 44 | AC_CHECK_HEADERS([windows.h])
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| 45 |
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| 46 | AC_CACHE_CHECK([for OpenGL library], [ax_cv_check_gl_libgl],
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| 47 | [ax_cv_check_gl_libgl="no"
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| 48 | ax_save_CPPFLAGS="${CPPFLAGS}"
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| 49 | CPPFLAGS="${GL_CFLAGS} ${CPPFLAGS}"
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| 50 | CXXFLAGS="${GL_CXXFLAGS} ${CXXFLAGS}"
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| 51 | ax_save_LIBS="${LIBS}"
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| 52 | LIBS=""
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| 53 | ax_check_libs="-lopengl32 -lGL"
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| 54 | for ax_lib in ${ax_check_libs}; do
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| 55 | if test X$ax_compiler_ms = Xyes; then
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| 56 | ax_try_lib=`echo $ax_lib | sed -e 's/^-l//' -e 's/$/.lib/'`
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| 57 | else
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| 58 | ax_try_lib="${ax_lib}"
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| 59 | fi
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| 60 | LIBS="${ax_try_lib} ${GL_LIBS} ${ax_save_LIBS}"
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| 61 | AC_LINK_IFELSE(
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| 62 | [AC_LANG_PROGRAM([[
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| 63 | # if HAVE_WINDOWS_H && defined(_WIN32)
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| 64 | # include <windows.h>
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| 65 | # endif
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| 66 | # include <GL/gl.h>]],
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| 67 | [[glBegin(0)]])],
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| 68 | [ax_cv_check_gl_libgl="${ax_try_lib}"; break])
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| 69 | done
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| 70 | LIBS=${ax_save_LIBS}
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| 71 | CPPFLAGS=${ax_save_CPPFLAGS}])
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| 72 |
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| 73 | if test "X${ax_cv_check_gl_libgl}" = "Xno"; then
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| 74 | no_gl="yes"
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| 75 | GL_CFLAGS=""
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| 76 | GL_CXXFLAGS=""
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| 77 | GL_LIBS=""
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| 78 | else
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| 79 | GL_LIBS="${ax_cv_check_gl_libgl} ${GL_LIBS}"
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| 80 | fi
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| 81 | AC_LANG_POP(C)
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| 82 | fi
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| 83 |
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| 84 | AC_SUBST([GL_CFLAGS])
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| 85 | AC_SUBST([GL_CXXFLAGS])
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| 86 | AC_SUBST([GL_LIBS])
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| 87 | ])dnl
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