autoconf/m4/opengl.m4


AC_DEFUN([SM_OPENGL],
[
	AC_LANG_PUSH(C)

	AC_CHECK_HEADER("GL/gl.h", ,
	AC_MSG_ERROR("OpenGL headers not found."), [$GL_INCLUDES])
	
	GL_LIBS=""
	
	AX_CHECK_LIB_USING_HEADER(GL, 'glBegin(GL_POINTS)', GL/gl.h, [GL_LIBS="-lGL"])
	
	if test "$GL_LIBS" = ""; then
	AX_CHECK_LIB_USING_HEADER(opengl32, 'glBegin(GL_POINTS)', GL/gl.h, [GL_LIBS="-lopengl32"])
	fi
	if test "$GL_LIBS" = ""; then
			AC_MSG_ERROR("No usable OpenGL library found.")
	fi
	
	AC_SUBST(GL_LIBS)
])
Now detects OpenGL correctly. 2013-10-24 02:11:18 -05:00
			`AC_DEFUN([SM_OPENGL],`
			`[`
			`AC_LANG_PUSH(C)`

			`AC_CHECK_HEADER("GL/gl.h", ,`
			`AC_MSG_ERROR("OpenGL headers not found."), [$GL_INCLUDES])`

			`GL_LIBS=""`

Meet AX_CHECK_LIB_USING_HEADER. Also threw X11 back in because why the hell not. configure actually completes successfully now. 2013-10-24 17:31:34 -05:00			`AX_CHECK_LIB_USING_HEADER(GL, 'glBegin(GL_POINTS)', GL/gl.h, [GL_LIBS="-lGL"])`
Now detects OpenGL correctly. 2013-10-24 02:11:18 -05:00
Slightly more robust ifs. Actually export GL_LIBS. 2013-10-26 17:41:27 -05:00			`if test "$GL_LIBS" = ""; then`
Meet AX_CHECK_LIB_USING_HEADER. Also threw X11 back in because why the hell not. configure actually completes successfully now. 2013-10-24 17:31:34 -05:00			`AX_CHECK_LIB_USING_HEADER(opengl32, 'glBegin(GL_POINTS)', GL/gl.h, [GL_LIBS="-lopengl32"])`
Now detects OpenGL correctly. 2013-10-24 02:11:18 -05:00			`fi`
Slightly more robust ifs. Actually export GL_LIBS. 2013-10-26 17:41:27 -05:00			`if test "$GL_LIBS" = ""; then`
Now detects OpenGL correctly. 2013-10-24 02:11:18 -05:00			`AC_MSG_ERROR("No usable OpenGL library found.")`
			`fi`
Slightly more robust ifs. Actually export GL_LIBS. 2013-10-26 17:41:27 -05:00
			`AC_SUBST(GL_LIBS)`
Now detects OpenGL correctly. 2013-10-24 02:11:18 -05:00			`])`