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author | Peter Simons <simons@cryp.to> | 2007-02-18 23:43:16 +0100 |
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committer | Peter Simons <simons@cryp.to> | 2007-02-18 23:43:16 +0100 |
commit | 16aee45643e593e2833e4dff19df7b5f14267a79 (patch) | |
tree | ba40c1ee401bbbcec7dbee5e3bb51d21c70db130 /m4/ax_check_gl.m4 | |
download | autoconf-archive-16aee45643e593e2833e4dff19df7b5f14267a79.tar.gz |
Imported http://autoconf-archive.cryp.to/ release 2007-02-14.
Diffstat (limited to 'm4/ax_check_gl.m4')
-rw-r--r-- | m4/ax_check_gl.m4 | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/m4/ax_check_gl.m4 b/m4/ax_check_gl.m4 new file mode 100644 index 0000000..f6d35b7 --- /dev/null +++ b/m4/ax_check_gl.m4 @@ -0,0 +1,108 @@ +##### http://autoconf-archive.cryp.to/ax_check_gl.html +# +# SYNOPSIS +# +# AX_CHECK_GL +# +# DESCRIPTION +# +# Check for an OpenGL implementation. If GL is found, the required +# compiler and linker flags are included in the output variables +# "GL_CFLAGS" and "GL_LIBS", respectively. This macro adds the +# configure option "--with-apple-opengl-framework", which users can +# use to indicate that Apple's OpenGL framework should be used on Mac +# OS X. If Apple's OpenGL framework is used, the symbol +# "HAVE_APPLE_OPENGL_FRAMEWORK" is defined. If no GL implementation +# is found, "no_gl" is set to "yes". +# +# LAST MODIFICATION +# +# 2004-11-15 +# +# COPYLEFT +# +# Copyright (c) 2004 Braden McDaniel <braden@endoframe.com> +# +# Copying and distribution of this file, with or without +# modification, are permitted in any medium without royalty provided +# the copyright notice and this notice are preserved. + +AC_DEFUN([AX_CHECK_GL], +[AC_REQUIRE([AC_PATH_X])dnl +AC_REQUIRE([ACX_PTHREAD])dnl + +# +# There isn't a reliable way to know we should use the Apple OpenGL framework +# without a configure option. A Mac OS X user may have installed an +# alternative GL implementation (e.g., Mesa), which may or may not depend on X. +# +AC_ARG_WITH([apple-opengl-framework], + [AC_HELP_STRING([--with-apple-opengl-framework], + [use Apple OpenGL framework (Mac OS X only)])]) +if test "X$with_apple_opengl_framework" = "Xyes"; then + AC_DEFINE([HAVE_APPLE_OPENGL_FRAMEWORK], [1], + [Use the Apple OpenGL framework.]) + GL_LIBS="-framework OpenGL" +else + AC_LANG_PUSH(C) + + AX_LANG_COMPILER_MS + if test X$ax_compiler_ms = Xno; then + GL_CFLAGS="${PTHREAD_CFLAGS}" + GL_LIBS="${PTHREAD_LIBS} -lm" + fi + + # + # Use x_includes and x_libraries if they have been set (presumably by + # AC_PATH_X). + # + if test "X$no_x" != "Xyes"; then + if test -n "$x_includes"; then + GL_CFLAGS="-I${x_includes} ${GL_CFLAGS}" + fi + if test -n "$x_libraries"; then + GL_LIBS="-L${x_libraries} -lX11 ${GL_LIBS}" + fi + fi + + AC_CHECK_HEADERS([windows.h]) + + AC_CACHE_CHECK([for OpenGL library], [ax_cv_check_gl_libgl], + [ax_cv_check_gl_libgl="no" + ax_save_CPPFLAGS="${CPPFLAGS}" + CPPFLAGS="${GL_CFLAGS} ${CPPFLAGS}" + ax_save_LIBS="${LIBS}" + LIBS="" + ax_check_libs="-lopengl32 -lGL" + for ax_lib in ${ax_check_libs}; do + if test X$ax_compiler_ms = Xyes; then + ax_try_lib=`echo $ax_lib | sed -e 's/^-l//' -e 's/$/.lib/'` + else + ax_try_lib="${ax_lib}" + fi + LIBS="${ax_try_lib} ${GL_LIBS} ${ax_save_LIBS}" + AC_LINK_IFELSE( + [AC_LANG_PROGRAM([[ +# if HAVE_WINDOWS_H && defined(_WIN32) +# include <windows.h> +# endif +# include <GL/gl.h>]], + [[glBegin(0)]])], + [ax_cv_check_gl_libgl="${ax_try_lib}"; break]) + done + LIBS=${ax_save_LIBS} + CPPFLAGS=${ax_save_CPPFLAGS}]) + + if test "X${ax_cv_check_gl_libgl}" = "Xno"; then + no_gl="yes" + GL_CFLAGS="" + GL_LIBS="" + else + GL_LIBS="${ax_cv_check_gl_libgl} ${GL_LIBS}" + fi + AC_LANG_POP(C) +fi + +AC_SUBST([GL_CFLAGS]) +AC_SUBST([GL_LIBS]) +])dnl |