Hello, The latest changes to getopt (commit 6471b462, "getopt: fix inclusion guards for cygwin") break compilation of getopt1.c on GNU/Linux:
GEN configmake.h CC getopt1.o getopt1.c:42: error: syntax error before '*' token getopt1.c: In function `getopt_long': getopt1.c:44: error: number of arguments doesn't match prototype /usr/include/getopt.h:162: error: prototype declaration The reason is that the declarations of getopt_long and getopt_long_r both use __getopt_argv_const, which is normally defined in getopt.h. However, if the system already has getopt.h, it gets included and further contents of the gnulib's getopt.h is ignored. Attempts to define __getopt_argv_const in getopt1.c won't fix the bug, since it is not known whether to define it to empty string or to const (see comment at getopt.in.h:39). Actually, it is impossible to include system's getopt.h and to ensure its declarations of getopt_long (et al.) match those in gnulib's getopt1.c. Any ideas how to fix it? Regards, Sergey
