diff options
| author | Ian Romanick <idr@freedesktop.org> | 2010-07-18 16:55:31 -0700 |
|---|---|---|
| committer | Ian Romanick <idr@freedesktop.org> | 2010-07-18 16:55:31 -0700 |
| commit | 9a48bdd102c7cc51a8049e5df86c8e538d0f1d13 (patch) | |
| tree | fa87bfd23155103f31057f424aa966df5a6415b9 | |
| parent | 640b86e028431a566b1c21e9be3f52e2bf18e87c (diff) | |
Add checks to configure.ac for the window system
Soon the library will need to call the window system depenedent
GetProcAddress funtion.
| -rw-r--r-- | configure.ac | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index af5c479..0c4f964 100644 --- a/configure.ac +++ b/configure.ac @@ -32,6 +32,12 @@ AC_TYPE_UINT8_T AC_HEADER_STDC AC_CHECK_FUNCS(fopen_s) +AC_ARG_WITH([winsys], + [AS_HELP_STRING([--with-winsys], + [select windowing system to use between glx, egl, and wgl @<:@default=check@:>@])], + [], + [with_winsys=check]) + AC_ARG_ENABLE([debug], [AS_HELP_STRING([--enable-debug], [use debug compiler flags and macros @<:@default=disabled@:>@])], @@ -63,6 +69,55 @@ else fi CXXFLAGS="$CXXFLAGS $WARN" +# Determine which window system layer to use. If none is selected or detected, +# see if the required functions are statically available (this maybe the case +# on OpenGL ES 2.0 or on OS X). + +if test "x$with_winsys" = xcheck ; then + AC_CHECK_HEADER("GL/glx.h", [have_glx=yes], [], []) + AC_CHECK_HEADER("EGL/egl.h", [have_egl=yes], [], []) + AC_CHECK_HEADER("GL/wgl.h", [have_wgl=yes], [], []) + + if test "x$have_glx" = xyes ; then + if test "x$have_egl" = xyes -o "x$have_wgl" = xyes ; then + AC_MSG_ERROR("cannot determine which window system to use") + fi + + with_winsys=glx + fi + + if test "x$have_egl" = xyes ; then + if test "x$have_wgl" = xyes ; then + AC_MSG_ERROR("cannot determine which window system to use") + fi + + with_winsys=egl + fi + + if test "x$have_wgl" = xyes ; then + with_winsys=wgl + fi +fi + +if test "x$with_winsys" = xglx ; then + AC_DEFINE([HAVE_GLX], [1], [Use GLX as the window system layer.]) +elif test "x$with_winsys" = xegl ; then + AC_DEFINE([HAVE_EGL], [1], [Use EGL as the window system layer.]) +elif test "x$with_winsys" = xwgl ; then + AC_DEFINE([HAVE_WGL], [1], [Use WGL as the window system layer.]) +elif test "x$with_winsys" = xcheck -o "x$with_winsys" = xno; then + # No window system. Check that the OpenGL library makes OpenGL 2.0 + # symbols statically available. + AC_CHECK_FUNCS(glCreateShader, + [], + [AC_MSG_ERROR("cannot find glCreateShader. Update library path or select a window system via --with-winsys")] + ) +else + AC_MSG_ERROR("invalid window system selection") +fi + + + AC_OUTPUT([Makefile src/Makefile test/Makefile |