Conditionalize building GLX and EGL tests and headers.

Note that the generated code is still generated, they just aren't
built and installed.  The goal with that is that someone could take
the built .c and .h files and drop it into their own project, if they
want to avoid shared libs.

configure.ac

@@ -47,6 +47,27 @@ AC_DISABLE_STATIC
 AC_PROG_LIBTOOL
 AC_SYS_LARGEFILE
 
+case $host_os in
+    mingw*)
+        build_egl=no
+        build_glx=no
+        ;;
+    *)
+        build_egl=yes
+        build_glx=yes
+        ;;
+esac
+
+AM_CONDITIONAL(BUILD_EGL, test x$build_egl = xyes)
+if test x$build_egl = xyes; then
+    AC_DEFINE([BUILD_EGL], [1], [build EGL tests])
+fi
+
+AM_CONDITIONAL(BUILD_GLX, test x$build_glx = xyes)
+if test x$build_glx = xyes; then
+    AC_DEFINE([BUILD_GLX], [1], [build GLX tests])
+fi
+
 if test "x$GCC" = xyes; then
     save_CFLAGS="$CFLAGS"
     AC_MSG_CHECKING([whether $CC supports -fvisibility=hidden])

include/epoxy/Makefile.am

@@ -26,5 +26,10 @@ epoxyinclude_HEADERS = \
         $(GLX_INCLUDES) \
 	$()
 
+if BUILD_EGL
 EGL_INCLUDES = egl.h
+endif
+
+if BUILD_GLX
 GLX_INCLUDES = glx.h
+endif

src/Makefile.am

@@ -30,10 +30,18 @@ lib_LTLIBRARIES = libepoxy.la
 
 epoxyinclude_DATA = \
 	$(GENERATED_GL_INCLUDES) \
-	$(GENERATED_GLX_INCLUDES) \
-	$(GENERATED_EGL_INCLUDES) \
+	$(INSTALL_GLX_INCLUDES) \
+	$(INSTALL_EGL_INCLUDES) \
 	$()
 
+if BUILD_EGL
+INSTALL_EGL_INCLUDES = $(GENERATED_EGL_INCLUDES)
+endif
+
+if BUILD_GLX
+INSTALL_GLX_INCLUDES = $(GENERATED_GLX_INCLUDES)
+endif
+
 GENERATED_GL_INCLUDES = \
 	$(builddir)/../include/epoxy/gl_generated.h \
 	$(builddir)/../include/epoxy/gl_generated_vtable_defines.h \

test/Makefile.am

@@ -21,8 +21,8 @@
 EPOXY = $(builddir)/../src/libepoxy.la
 
 check_LTLIBRARIES = \
-	libegl_common.la \
-	libglx_common.la \
+	$(EGL_LIBS) \
+	$(GLX_LIBS) \
 	$()
 
 libegl_common_la_SOURCES = \
@@ -41,17 +41,33 @@ AM_CPPFLAGS = \
 	$(X11_CFLAGS)
 
 TESTS = \
+	$(EGL_TESTS) \
+	$(GLX_TESTS) \
+	headerguards \
+	miscdefines \
+	$()
+
+check_PROGRAMS = $(TESTS)
+
+if BUILD_EGL
+EGL_TESTS = \
 	egl_has_extension_nocontext \
+	$()
+
+EGL_LIBS = libegl_common.la
+endif
+
+if BUILD_GLX
+GLX_TESTS = \
 	glx_beginend \
 	glx_public_api \
 	glx_public_api_core \
 	glx_glxgetprocaddress_nocontext \
 	glx_has_extension_nocontext \
-	headerguards \
-	miscdefines \
 	$()
 
-check_PROGRAMS = $(TESTS)
+GLX_LIBS = libglx_common.la
+endif
 
 egl_has_extension_nocontext_LDFLAGS = $(X11_LIBS) $(EPOXY) libegl_common.la
 egl_has_extension_nocontext_DEPENDENCIES = libegl_common.la
@@ -70,4 +86,3 @@ glx_glxgetprocaddress_nocontext_DEPENDENCIES = libglx_common.la
 
 glx_has_extension_nocontext_LDFLAGS = $(X11_LIBS) $(EPOXY) libglx_common.la
 glx_has_extension_nocontext_DEPENDENCIES = libglx_common.la
-

test/headerguards.c

@@ -21,16 +21,29 @@
  * IN THE SOFTWARE.
  */
 
+#include <config.h>
+
 #include <epoxy/gl.h>
+
+#ifdef BUILD_EGL
 #include <epoxy/egl.h>
+#endif
+
+#ifdef BUILD_GLX
 #include <epoxy/glx.h>
+#endif
 
+#ifdef BUILD_EGL
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
+#endif
+
+#ifdef BUILD_GLX
 #include <GL/gl.h>
 #include <GL/glext.h>
 #include <GL/glx.h>
 #include <GL/glxext.h>
+#endif
 
 int main(int argc, char **argv)
 {

test/miscdefines.c

@@ -22,8 +22,14 @@
  */
 
 #include <epoxy/gl.h>
+
+#ifdef BUILD_EGL
 #include <epoxy/egl.h>
+#endif
+
+#ifdef BUILD_GLX
 #include <epoxy/glx.h>
+#endif
 
 #if GL_VERSION_3_2 != 1
 #error bad GL_VERSION_3_2