| dnl FTGL_CHECK_GL() |
| dnl Check for OpenGL development environment and GLU >= 1.2 |
| dnl |
| AC_DEFUN([FTGL_CHECK_GL], |
| [dnl |
| AC_REQUIRE([AC_PROG_CC]) |
| AC_REQUIRE([AC_PATH_X]) |
| AC_REQUIRE([AC_PATH_XTRA]) |
| |
| AC_ARG_WITH([--with-gl-inc], |
| AC_HELP_STRING([--with-gl-inc=DIR],[Directory where GL/gl.h is installed])) |
| AC_ARG_WITH([--with-gl-lib], |
| AC_HELP_STRING([--with-gl-lib=DIR],[Directory where OpenGL libraries are installed])) |
| |
| AC_LANG_SAVE |
| AC_LANG_C |
| |
| GL_SAVE_CPPFLAGS="$CPPFLAGS" |
| GL_SAVE_LIBS="$LIBS" |
| |
| if test "x$no_x" != xyes ; then |
| GL_CFLAGS="$X_CFLAGS" |
| GL_X_LIBS="$X_PRE_LIBS $X_LIBS -lX11 -lXext -lXmu $X_EXTRA_LIBS" |
| fi |
| |
| if test "x$with_gl_inc" != "xnone" ; then |
| if test -d "$with_gl_inc" ; then |
| GL_CFLAGS="-I$with_gl_inc" |
| else |
| GL_CFLAGS="$with_gl_inc" |
| fi |
| else |
| GL_CFLAGS= |
| fi |
| |
| CPPFLAGS="$GL_CFLAGS" |
| AC_CHECK_HEADER([GL/gl.h], [], [AC_MSG_ERROR(GL/gl.h is needed, please specify its location with --with-gl-inc. If this still fails, please contact mmagallo@debian.org, include the string FTGL somewhere in the subject line and provide a copy of the config.log file that was left behind.)]) |
| |
| AC_MSG_CHECKING([for GL library]) |
| if test "x$with_gl_lib" != "x" ; then |
| if test -d "$with_gl_lib" ; then |
| LIBS="-L$with_gl_lib -lGL" |
| else |
| LIBS="$with_gl_lib" |
| fi |
| else |
| LIBS="-lGL" |
| fi |
| AC_LINK_IFELSE([AC_LANG_CALL([],[glBegin])],[HAVE_GL=yes], [HAVE_GL=no]) |
| if test "x$HAVE_GL" = xno ; then |
| if test "x$GL_X_LIBS" != x ; then |
| LIBS="-lGL $GL_X_LIBS" |
| AC_LINK_IFELSE([AC_LANG_CALL([],[glBegin])],[HAVE_GL=yes], [HAVE_GL=no]) |
| fi |
| fi |
| if test "x$HAVE_GL" = xyes ; then |
| AC_MSG_RESULT([yes]) |
| GL_LIBS=$LIBS |
| else |
| AC_MSG_RESULT([no]) |
| AC_MSG_ERROR([GL library could not be found, please specify its location with --with-gl-lib. If this still fails, please contact mmagallo@debian.org, include the string FTGL somewhere in the subject line and provide a copy of the config.log file that was left behind.]) |
| fi |
| |
| AC_CHECK_HEADER([GL/glu.h]) |
| AC_MSG_CHECKING([for GLU version >= 1.2]) |
| AC_TRY_COMPILE([#include <GL/glu.h>], [ |
| #if !defined(GLU_VERSION_1_2) |
| #error GLU too old |
| #endif |
| ], |
| [AC_MSG_RESULT([yes])], |
| [AC_MSG_RESULT([no]) |
| AC_MSG_ERROR([GLU >= 1.2 is needed to compile this library]) |
| ]) |
| |
| AC_MSG_CHECKING([for GLU library]) |
| LIBS="-lGLU $GL_LIBS" |
| AC_LINK_IFELSE([AC_LANG_CALL([],[gluNewTess])],[HAVE_GLU=yes], [HAVE_GLU=no]) |
| if test "x$HAVE_GLU" = xno ; then |
| if test "x$GL_X_LIBS" != x ; then |
| LIBS="-lGLU $GL_LIBS $GL_X_LIBS" |
| AC_LINK_IFELSE([AC_LANG_CALL([],[gluNewTess])],[HAVE_GLU=yes], [HAVE_GLU=no]) |
| fi |
| fi |
| if test "x$HAVE_GLU" = xyes ; then |
| AC_MSG_RESULT([yes]) |
| GL_LIBS="$LIBS" |
| else |
| AC_MSG_RESULT([no]) |
| AC_MSG_ERROR([GLU library could not be found, please specify its location with --with-gl-lib. If this still fails, please contact mmagallo@debian.org, include the string FTGL somewhere in the subject line and provide a copy of the config.log file that was left behind.]) |
| fi |
| |
| AC_SUBST(GL_CFLAGS) |
| AC_SUBST(GL_LIBS) |
| |
| CPPFLAGS="$GL_SAVE_CPPFLAGS" |
| LIBS="$GL_SAVE_LIBS" |
| AC_LANG_RESTORE |
| GL_X_LIBS="" |
| ]) |
