Hello - This recent commit:
https://git.savannah.gnu.org/gitweb/?p=gnulib.git;a=commit;h=8ad7bc671475d3291df10a1a1d64fddfd30e5175 renders Flex generated lexers uncompilable. If you use GnuLib, you're using wrappers around standard headers like stdio.h. The recent commit added lines to such wrappers like this: #if !_GL_CONFIG_H_INCLUDED #error "Please include config.h first." #endif The problem is a Flex-generated lexer's .c file has: /* begin standard C headers. */ #include <stdio.h> #include <string.h> #include <errno.h> #include <stdlib.h> generated near the top and the project's include path is set to pick up the wrapper headers first — and the lexer's .c file doesn't have: #include "config.h" before the include of the wrapper headers, so it complains. IMHO, this is a problem with Flex, not GnuLib. Flex should have a mechanism to insert code at the top of the generated lexer like Bison’s "%code top” directive. So this is just an FYI that the aforementioned commit can break machine generated C code. - Paul
