1dnl @synopsis AX_CHECK_GLU 2dnl 3dnl Check for GLU. If GLU is found, the required preprocessor and linker flags 4dnl are included in the output variables "GLU_CFLAGS" and "GLU_LIBS", 5dnl respectively. This macro adds the configure option 6dnl "--with-apple-opengl-framework", which users can use to indicate that 7dnl Apple's OpenGL framework should be used on Mac OS X. If Apple's OpenGL 8dnl framework is used, the symbol "HAVE_APPLE_OPENGL_FRAMEWORK" is defined. If 9dnl no GLU implementation is found, "no_glu" is set to "yes". 10dnl 11dnl @version 1.2 12dnl @author Braden McDaniel <braden@endoframe.com> 13dnl 14AC_DEFUN([AX_CHECK_GLU], 15[AC_REQUIRE([AX_CHECK_GL])dnl 16AC_REQUIRE([AC_PROG_CXX])dnl 17GLU_CFLAGS="${GL_CFLAGS}" 18if test "X${with_apple_opengl_framework}" != "Xyes"; then 19 AC_CACHE_CHECK([for OpenGL Utility library], [ax_cv_check_glu_libglu], 20 [ax_cv_check_glu_libglu="no" 21 ax_save_CPPFLAGS="${CPPFLAGS}" 22 CPPFLAGS="${GL_CFLAGS} ${CPPFLAGS}" 23 ax_save_LIBS="${LIBS}" 24 LIBS="" 25 ax_check_libs="-lglu32 -lGLU" 26 for ax_lib in ${ax_check_libs}; do 27 if test X$ax_compiler_ms = Xyes; then 28 ax_try_lib=`echo $ax_lib | sed -e 's/^-l//' -e 's/$/.lib/'` 29 else 30 ax_try_lib="${ax_lib}" 31 fi 32 LIBS="${ax_try_lib} ${GL_LIBS} ${ax_save_LIBS}" 33 # 34 # libGLU typically links with libstdc++ on POSIX platforms. However, 35 # setting the language to C++ means that test program source is named 36 # "conftest.cc"; and Microsoft cl doesn't know what to do with such a 37 # file. 38 # 39 AC_LANG_PUSH([C++]) 40 if test X$ax_compiler_ms = Xyes; then 41 AC_LANG_PUSH([C]) 42 fi 43 AC_LINK_IFELSE( 44 [AC_LANG_PROGRAM([[ 45# if HAVE_WINDOWS_H && defined(_WIN32) 46# include <windows.h> 47# endif 48# include <GL/glu.h>]], 49 [[gluBeginCurve(0)]])], 50 [ax_cv_check_glu_libglu="${ax_try_lib}"; break]) 51 if test X$ax_compiler_ms = Xyes; then 52 AC_LANG_POP([C]) 53 fi 54 AC_LANG_POP([C++]) 55 done 56 LIBS=${ax_save_LIBS} 57 CPPFLAGS=${ax_save_CPPFLAGS}]) 58 if test "X${ax_cv_check_glu_libglu}" = "Xno"; then 59 no_glu="yes" 60 GLU_CFLAGS="" 61 GLU_LIBS="" 62 else 63 GLU_LIBS="${ax_cv_check_glu_libglu} ${GL_LIBS}" 64 fi 65fi 66AC_SUBST([GLU_CFLAGS]) 67AC_SUBST([GLU_LIBS]) 68]) 69