# =========================================================================== # http://www.gnu.org/software/autoconf-archive/ax_check_glut.html # =========================================================================== # # SYNOPSIS # # AX_CHECK_GLUT # # DESCRIPTION # # Check for GLUT. If GLUT is found, the required compiler and linker flags # are included in the output variables "GLUT_CFLAGS" and "GLUT_LIBS", # respectively. If GLUT is not found, "no_glut" is set to "yes". # # If the header "GL/glut.h" is found, "HAVE_GL_GLUT_H" is defined. If the # header "GLUT/glut.h" is found, HAVE_GLUT_GLUT_H is defined. These # preprocessor definitions may not be mutually exclusive. # # You should use something like this in your headers: # # # if HAVE_WINDOWS_H && defined(_WIN32) # # include # # endif # # if defined(HAVE_GL_GLUT_H) # # include # # elif defined(HAVE_GLUT_GLUT_H) # # include # # else # # error no glut.h # # endif # # LICENSE # # Copyright (c) 2009 Braden McDaniel # Copyright (c) 2013 Bastien Roucaries # # This program is free software; you can redistribute it and/or modify it # under the terms of the GNU General Public License as published by the # Free Software Foundation; either version 2 of the License, or (at your # option) any later version. # # This program is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General # Public License for more details. # # You should have received a copy of the GNU General Public License along # with this program. If not, see . # # As a special exception, the respective Autoconf Macro's copyright owner # gives unlimited permission to copy, distribute and modify the configure # scripts that are the output of Autoconf when processing the Macro. You # need not follow the terms of the GNU General Public License when using # or distributing such scripts, even though portions of the text of the # Macro appear in them. The GNU General Public License (GPL) does govern # all other use of the material that constitutes the Autoconf Macro. # # This special exception to the GPL applies to versions of the Autoconf # Macro released by the Autoconf Archive. When you make and distribute a # modified version of the Autoconf Macro, you may extend this special # exception to the GPL to apply to your modified version as well. #serial 13 dnl local save flags AC_DEFUN([_AX_CHECK_GLUT_SAVE_FLAGS], [dnl ax_check_glut_saved_libs="${LIBS}" ax_check_glut_saved_cflags="${CFLAGS}" ax_check_glut_saved_cppflags="${CPPFLAGS}" ax_check_glut_saved_ldflags="${LDFLAGS}" ]) dnl local restore flags AC_DEFUN([_AX_CHECK_GLUT_RESTORE_FLAGS], [dnl LIBS="${ax_check_glut_saved_libs}" CFLAGS="${ax_check_glut_saved_cflags}" CPPFLAGS="${ax_check_glut_saved_cppflags}" LDFLAGS="${ax_check_glut_saved_ldflags}" ]) dnl Default include : add windows.h dnl see http://www.opengl.org/wiki/Platform_specifics:_Windows dnl (acceded 20120801) AC_DEFUN([_AX_CHECK_GLUT_INCLUDES_DEFAULT],dnl [ AC_INCLUDES_DEFAULT [ # if defined(HAVE_WINDOWS_H) && defined(_WIN32) # include # endif ] ]) m4_define([_AX_CHECK_GLUT_PROGRAM], [AC_LANG_PROGRAM([[ # if HAVE_WINDOWS_H && defined(_WIN32) # include # endif # ifdef HAVE_GL_GLUT_H # include # elif defined(HAVE_GLUT_GLUT_H) # include # else # error no glut.h # endif]], [[glutMainLoop()]])]) dnl Check headers manually (default case) AC_DEFUN([_AX_CHECK_GLUT_HEADERS], [AC_LANG_PUSH([C]) _AX_CHECK_GLUT_SAVE_FLAGS() CFLAGS="${GLUT_CFLAGS} ${CFLAGS}" # see comment in _AX_CHECK_GL_INCLUDES_DEFAULT AC_CHECK_HEADERS([windows.h],[],[],[AC_INCLUDES_DEFAULT]) AC_CHECK_HEADERS([GL/glut.h OpenGL/glut.h], [ax_check_glut_have_headers="yes";break], [ax_check_glut_have_headers_headers="no"], [_AX_CHECK_GLUT_INCLUDES_DEFAULT()]) # do not try darwin specific OpenGl/gl.h _AX_CHECK_GLUT_RESTORE_FLAGS() AC_LANG_POP([C]) ]) # dnl try to found library (generic case) # dnl $1 is set to the library to found AC_DEFUN([_AX_CHECK_GLUT_MANUAL_LIBS_GENERIC], [dnl ax_check_glut_manual_libs_generic_extra_libs="$1" AS_IF([test "X$ax_check_glut_manual_libs_generic_extra_libs" = "X"], [AC_MSG_ERROR([AX_CHECK_GLUT_MANUAL_LIBS_GENERIC argument must no be empty])]) AC_LANG_PUSH([C]) _AX_CHECK_GLUT_SAVE_FLAGS() CFLAGS="${GLUT_CFLAGS} ${CFLAGS}" LIBS="${GLUT_LIBS} ${LIBS}" AC_SEARCH_LIBS([glutMainLoop],[$ax_check_glut_manual_libs_generic_extra_libs], [ax_check_glut_lib_opengl="yes"], [ax_check_glut_lib_opengl="no"]) AS_CASE([$ac_cv_search_glutMainLoop], ["none required"],[], [no],[], [GLUT_LIBS="${ac_cv_search_glutMainLoop} ${GLU_LIBS}"]) _AX_CHECK_GLUT_RESTORE_FLAGS() AC_LANG_PUSH([C]) ]) dnl Check library manually: subroutine must set dnl $ax_check_glut_lib_opengl={yes,no} dnl for windows part see dnl - http://www.transmissionzero.co.uk/computing/using-glut-with-mingw/ dnl - http://user.xmission.com/~nate/glut.html AC_DEFUN([_AX_CHECK_GLUT_MANUAL_LIBS], [AC_REQUIRE([AC_CANONICAL_HOST]) GLUT_LIBS="${GLUT_LIBS} ${GLU_LIBS}" AS_CASE([${host}], # try first cygwin version [*-cygwin*],[_AX_CHECK_GLUT_MANUAL_LIBS_GENERIC([GLUT glut MesaGLUT freeglut freeglut32 glut32])], # try first native [*-mingw*],[_AX_CHECK_GLUT_MANUAL_LIBS_GENERIC([glut32 GLUT glut MesaGLUT freeglut freeglut32])], [_AX_CHECK_GLUT_MANUAL_LIBS_GENERIC([GLUT glut freeglut MesaGLUT])]) AC_CACHE_CHECK([for OpenGL Utility Toolkit (GLUT) libraries],[ax_cv_check_glut_lib_opengl], [ax_cv_check_glut_lib_opengl="${ax_check_glut_lib_opengl}"]) ax_check_glut_lib_opengl="${ax_cv_check_glut_lib_opengl}" ]) # compile the example program AC_DEFUN([_AX_CHECK_GLUT_COMPILE], [dnl AC_LANG_PUSH([C]) _AX_CHECK_GLUT_SAVE_FLAGS() CFLAGS="${GLUT_CFLAGS} ${CFLAGS}" AC_COMPILE_IFELSE([_AX_CHECK_GLUT_PROGRAM], [ax_check_glut_compile_opengl="yes"], [ax_check_glut_compile_opengl="no"]) _AX_CHECK_GLUT_RESTORE_FLAGS() AC_LANG_POP([C]) ]) # compile the example program (cache) AC_DEFUN([_AX_CHECK_GLUT_COMPILE_CV], [dnl AC_CACHE_CHECK([for compiling a minimal OpenGL Utility Toolkit (GLUT) program],[ax_cv_check_glut_compile_opengl], [_AX_CHECK_GLUT_COMPILE() ax_cv_check_glut_compile_opengl="${ax_check_glut_compile_opengl}"]) ax_check_glut_compile_opengl="${ax_cv_check_glut_compile_opengl}" ]) # link the example program AC_DEFUN([_AX_CHECK_GLUT_LINK], [dnl AC_LANG_PUSH([C]) _AX_CHECK_GLUT_SAVE_FLAGS() CFLAGS="${GLUT_CFLAGS} ${CFLAGS}" LIBS="${GLUT_LIBS} ${LIBS}" LDFLAGS="${GLUT_LDFLAGS} ${LDFLAGS}" AC_LINK_IFELSE([_AX_CHECK_GLUT_PROGRAM], [ax_check_glut_link_opengl="yes"], [ax_check_glut_link_opengl="no"]) _AX_CHECK_GLUT_RESTORE_FLAGS() AC_LANG_POP([C]) ]) # link the example program (cache) AC_DEFUN([_AX_CHECK_GLUT_LINK_CV], [dnl AC_CACHE_CHECK([for linking a minimal OpenGL Utility Toolkit (GLUT) program],[ax_cv_check_glut_link_opengl], [_AX_CHECK_GLUT_LINK() ax_cv_check_glut_link_opengl="${ax_check_glut_link_opengl}"]) ax_check_glut_link_opengl="${ax_cv_check_glut_link_opengl}" ]) # manually check GLUT AC_DEFUN([_AX_CHECK_GLUT_MANUAL],dnl [ GLUT_CFLAGS="${GLUT_CFLAGS} ${GLU_CFLAGS}" _AX_CHECK_GLUT_HEADERS AS_IF([test "X$ax_check_glut_have_headers" = "Xyes"], [_AX_CHECK_GLUT_MANUAL_LIBS], [ax_check_glut_lib="no"]) AS_IF([test "X$ax_check_glut_lib_opengl" = "Xyes"], [_AX_CHECK_GLUT_COMPILE_CV()], [ax_cv_check_glut_compile_opengl="no"]) AS_IF([test "X$ax_cv_check_glut_compile_opengl" = "Xyes"], [_AX_CHECK_GLUT_LINK_CV()], [ax_cv_check_glut_link_opengl="no"]) AS_IF([test "X$ax_cv_check_glut_link_opengl" = "Xyes"], [no_glut="no"], [no_glut="yes"]) ]) # main entry point AC_DEFUN([AX_CHECK_GLUT], [dnl AC_REQUIRE([AX_CHECK_GL])dnl AC_REQUIRE([AX_CHECK_GLU])dnl _AX_CHECK_GLUT_MANUAL AC_MSG_CHECKING([for a working OpenGL Utility Toolkit (GLUT) implementation]) AS_IF([test "X$no_glut" = "Xno"], [AC_MSG_RESULT([yes]) AC_MSG_CHECKING([for CFLAGS needed for OpenGL Utility Toolkit (GLUT)]) AC_MSG_RESULT(["${GLUT_CFLAGS}"]) AC_MSG_CHECKING([for LIBS needed for OpenGL Utility Toolkit (GLUT)]) AC_MSG_RESULT(["${GLUT_LIBS}"]) AC_MSG_CHECKING([for LDFLAGS needed for OpenGL Utility Toolkit (GLUT)]) AC_MSG_RESULT(["${GLUT_LDFLAGS}"])], [AC_MSG_RESULT([no]) GLUT_CFLAGS="" GLUT_LIBS="" GLUT_LDFLAGS=""]) AC_SUBST([GLUT_CFLAGS]) AC_SUBST([GLUT_LIBS]) AC_SUBST([GLUT_LDFLAGS]) ])