- use_quartz_opengl=no
- case $target_os in
- darwin*)
- if test x"$enable_opengl" != xx11; then
- AC_DEFINE([USE_QUARTZ_OPENGL], [1],
- [Define to 1 if native OpenGL should be used on Mac OS X])
- use_quartz_opengl=yes
- fi
- ;;
- esac
-
- if test x"$use_quartz_opengl" != xyes; then
- AC_CHECK_LIB([m], [atan], [GL_LIBS="-lm $GL_LIBS"])
-
- if test x"$no_x" != xyes; then
- test -n "$x_includes" && GL_CFLAGS="-I$x_includes $GL_CFLAGS"
- test -n "$x_libraries" && GL_LIBS="-L$x_libraries -lX11 $GL_LIBS"
- fi
-
- FP_CHECK_GL_HELPER([GL], [-lGL -lopengl32], [@%:@include <GL/gl.h>], [glEnd()])
-
- if test x"$no_GL" != xyes; then
- # Ugly: To get wglGetProcAddress on Windows, we have to link with
- # opengl32.dll, too, even when we are using Cygwin with X11.
- case "$GL_LIBS" in
- *-lopengl32*|*opengl32.lib*) ;;
- *) fp_save_LIBS="$LIBS"
- LIBS="$LIBS -lopengl32"
- AC_TRY_LINK([@%:@include <GL/gl.h>], [glEnd()],
- [GL_LIBS="$GL_LIBS -lopengl32"; GL_LIBS0="$GL_LIBS0 -lopengl32"])
- LIBS="$fp_save_LIBS"
- ;;
- esac
- fi
- fi
-fi
-
-AC_SUBST([GL_CFLAGS])
-AC_SUBST([GL_LIBS])
-])# FP_CHECK_GL
-
-
-# FP_CHECK_GLU
-# ------------
-AC_DEFUN([FP_CHECK_GLU],
-[AC_REQUIRE([FP_CHECK_GL])dnl
-GLU_CFLAGS="$GL_CFLAGS0"
-GLU_LIBS="$GL_LIBS0"
-
-if test x"$enable_opengl" = xno; then
- no_GLU=yes
-elif test x"$use_quartz_opengl" != xyes; then
- FP_CHECK_GL_HELPER([GLU], [-lglu32 -lGLU], [@%:@include <GL/glu.h>], [gluNewQuadric()])
-fi
-
-AC_SUBST([GLU_CFLAGS])
-AC_SUBST([GLU_LIBS])
-])# FP_CHECK_GLU
-
-
-# FP_CHECK_GLUT
-# -------------
-AC_DEFUN([FP_CHECK_GLUT],
-[AC_REQUIRE([FP_CHECK_GLU])
-FP_PATH_XTRA
-
-if test x"$enable_opengl" = xno; then
- no_GLUT=yes
-elif test x"$use_quartz_opengl" != xyes; then
- GLUT_CFLAGS="$GLU_CFLAGS0"
- GLUT_LIBS="$GLU_LIBS0"
-
- if test x"$no_x" != xyes; then
- GLUT_LIBS="$X_PRE_LIBS -lXmu -lXi $X_EXTRA_LIBS $GLUT_LIBS"
- fi
-
- AC_CHECK_HEADERS([windows.h GL/glut.h])
- # Note 1: On Cygwin with X11, GL/GLU functions use the "normal" calling
- # convention, but GLUT functions use stdcall. To get this right, it is
- # necessary to include <windows.h> first.
- # Note 2: MinGW/MSYS comes without a GLUT header, so we use Cygwin's one in
- # that case.
- FP_CHECK_GL_HELPER([GLUT], [-lglut32 -lglut], [
-#if HAVE_WINDOWS_H
-#include <windows.h>
-#endif
-#if HAVE_GL_GLUT_H
-#include <GL/glut.h>
-#else
-#include "glut_local.h"
-#endif
- ], [glutMainLoop()])
-fi
-
-AC_SUBST([GLUT_CFLAGS])
-AC_SUBST([GLUT_LIBS])
-])# FP_CHECK_GLUT
-
-
-dnl @synopsis FP_EMPTY_STRUCTS
-dnl
-dnl Check whether empty structs is accepted by CC.
-dnl
-AC_DEFUN(FP_EMPTY_STRUCTS,
-[AC_CACHE_CHECK(empty struct support, fptools_cv_empty_structs,
-[AC_TRY_COMPILE([
-typedef struct { /*empty*/ } StgFoo;
-],
-[int i;],
-fptools_cv_empty_structs=yes,
-fptools_cv_empty_structs=no)])
-if test "$fptools_cv_empty_structs" = yes; then
-AC_DEFINE([SUPPORTS_EMPTY_STRUCTS], [1], [Define to 1 if C compiler supports declaration of empty structure types.])
-fi
-])
-
-
-dnl @synopsis FP_READDIR_EOF_ERRNO
-dnl
-dnl Check what readdir() sets 'errno' to upon reaching
-dnl end of directory; not setting it is the correct thing to do,
-dnl but mingw based versions have set it to ENOENT until recently
-dnl (summer 2004).
-dnl
-dnl
-AC_DEFUN(FP_READDIR_EOF_ERRNO,
-[AC_CACHE_CHECK([what readdir sets errno to upon EOF], fptools_cv_readdir_eof_errno,
-[AC_TRY_RUN([#include <dirent.h>
-#include <stdio.h>
-#include <errno.h>
-int
-main(argc, argv)
-int argc;
-char **argv;
-{
- FILE *f=fopen("conftestval", "w");
-#if defined(__MINGW32__)
- int fd = mkdir("testdir");
-#else
- int fd = mkdir("testdir", 0666);
-#endif
- DIR* dp;
- struct dirent* de;
- int err = 0;
-
- if (!f) return 1;
- if (fd == -1) {
- fprintf(stderr,"unable to create directory; quitting.\n");
- return 1;
- }
- close(fd);
- dp = opendir("testdir");
- if (!dp) {
- fprintf(stderr,"unable to browse directory; quitting.\n");
- rmdir("testdir");
- return 1;
- }
-
- /* the assumption here is that readdir() will only return NULL
- * due to reaching the end of the directory.
- */
- while (de = readdir(dp)) {
- ;
- }
- err = errno;
- fprintf(f,"%d", err);
- fclose(f);
- closedir(de);
- rmdir("testdir");
- return 0;
-}],fptools_cv_readdir_eof_errno=`cat conftestval`, fptools_cv_readdir_eof_errno=bogus, fptools_cv_readdir_eof_errno=0)])
-dnl the cross value is somewhat bogus.
-AC_DEFINE([READDIR_ERRNO_EOF], [$fptools_cv_readdir_eof_errno], [readdir() sets errno to this upon EOF])
-])
-
-dnl @synopsis FP_DIRENT_FLAT_LAYOUT
-dnl
-dnl Check whether 'struct dirent' (in dirent.h) has d_name defined
-dnl as being the final field in a struct, or a pointer to somewhere
-dnl else. The former is the standardly thing to do, but mingw defns
-dnl have for the longest time gone for the latter. They no longer do,
-dnl hence the need to configure test for this.
-dnl
-dnl
-AC_DEFUN(FP_DIRENT_FLAT_LAYOUT,
-[AC_CACHE_CHECK([if struct dirent layout is flat], fptools_cv_dirent_flat_layout,
-[AC_TRY_RUN([#include <dirent.h>
-#include <stdio.h>
-#include <string.h>
-int
-main(argc, argv)
-int argc;
-char **argv;
-{
- struct dirent de;
- /*
- * Check whether d_name is defined as
- * struct dirent { .... ; char d_name[..]; }
- * or
- * struct dirent { .... ; char* d_name; }
- *
- * Returns 0 if the former.
- */
- memset(&de,0,sizeof(struct dirent));
- return ((int)de.d_name == 0);
-}],fptools_cv_dirent_flat_layout=yes, fptools_cv_dirent_flat_layout=no, fptools_cv_dirent_flat_layout=yes)])
-dnl the cross value is somewhat bogus.
-if test "$fptools_cv_dirent_flat_layout" = yes; then
-AC_DEFINE([STRUCT_DIRENT_FLAT_LAYOUT], [1], [Define to 1 if struct dirent is a flat structure])
-fi
-])
-