- if test "$enable_gl" = "yes"; then
- AC_CHECK_LIB([GL], [glXGetConfig],
- ,
- [
- enable_gl="no"
- AC_MSG_WARN([Disabling GL rendering support])
- ])
- fi
-
- if test "$enable_gl" = "yes"; then
- CPPFLAGS="$CPPFLAGS $X_CFLAGS"
- LIBS="$LIBS $X_PRE_LIBS $X_LIBS $X_EXTRA_LIBS"
-
- AC_MSG_CHECKING([if we can compile with GL])
- AC_TRY_LINK(
- [
- #include <GL/gl.h>
- ],
- [
- GLfloat f = 0.0;
- glVertex3f(f, f, f);
- ],
- [
- AC_MSG_RESULT([yes])
- ],
- [
- AC_MSG_RESULT([no])
- AC_MSG_WARN([Disabling GL rendering support])
- enable_gl="no"
- ])
+ AC_CHECK_LIB([GL], [glXGetConfig],
+ ,
+ [
+ AC_MSG_ERROR([A valid libGL could not be found.])
+ ])
+
+ CPPFLAGS="$CPPFLAGS $X_CFLAGS"
+ LIBS="$LIBS $X_PRE_LIBS $X_LIBS $X_EXTRA_LIBS"
+
+ AC_MSG_CHECKING([if we can compile with GL])
+ AC_TRY_LINK(
+ [
+ #include <GL/gl.h>
+ ],
+ [
+ GLfloat f = 0.0;
+ glVertex3f(f, f, f);
+ ],
+ [
+ AC_MSG_RESULT([yes])
+ ],
+ [
+ AC_MSG_RESULT([no])
+ AC_MSG_ERROR([Could not compile against GL])
+ ])