Extend the platform dependent build rules.
* src/mkheader.c (mk_include_name): New. (include_file): Implement '&' substitution. (try_include_file): New. (write_special): Use try_include_file and syscfg/. (main): Add a new arg. * configure.ac (CROSS_COMPILING): New am_conditional. (HOST_TRIPLET_STRING): New ac_define. * src/gen-posix-lock-obj.c (main): Print the host triplet. * src/w32-lock-obj-pub.in: Move to ... * src/syscfg/lock-obj-pub.mingw32.h: here. * src/Makefile.am (lock_obj_pub): New. (pre_mkheader_cmds): New. (gpg-error.h): Run pre_mkheader_cmds. (parts_of_gpg_error_h, lock-obj-pub.native.h): Do not use when cross-compiling.
- Signed-off-by: Werner Koch <wk@gnupg.org>