s/^@GL_GENERATE_ALLOCA_H_FALSE@/\#/
s/^@GL_GENERATE_STDBOOL_H_TRUE@/\#/
s/^@GL_GENERATE_STDBOOL_H_FALSE@//
+s/^@GL_GENERATE_STDALIGN_H_TRUE@//
+s/^@GL_GENERATE_STDALIGN_H_FALSE@/\#/
s/^@GL_GENERATE_STDARG_H_TRUE@/\#/
s/^@GL_GENERATE_STDARG_H_FALSE@/\#/
s/^@GL_GENERATE_STDDEF_H_TRUE@/\#/