build: fix compilation by including <wchar.h> and checking for regwexec.

configure.ac

@@ -65,6 +65,7 @@ AC_SUBST(DLL_LDFLAGS)
 AC_CHECK_HEADERS(windows.h winsock2.h io.h process.h unistd.h inttypes.h stdint.h libc.h malloc.h dlfcn.h regex.h sys/cdefs.h sys/socket.h netinet/in.h arpa/inet.h sys/uio.h aio.h sys/mman.h sys/wait.h sys/resource.h sys/time.h endian.h mach/task.h)
 
 AC_CHECK_FUNCS(setenv waitpid setrlimit gettimeofday fork kill pipe _pipe)
+AC_CHECK_FUNCS(regexec regwexec)
 AC_CHECK_FUNCS(dup dup2 ftello fseeko _IO_getc getline getdelim fgetln map_fd memalign posix_memalign aio_read accept bind connect socket readv pread recv recvfrom recvmsg mmap valloc sigaction getpagesize)
 AC_CHECK_FUNCS(getc_unlocked getchar_unlocked fgetc_unlocked fread_unlocked fgets_unlocked)
 AC_CHECK_FUNCS(__getdelim __srefill __filbuf __srget __uflow)

msvc/config.h

@@ -81,8 +81,9 @@
 #define HAVE_RECV 1
 #define HAVE_RECVFROM 1
 /* #undef HAVE_RECVMSG */
-/* #undef HAVE_REGEX_H */
+/* #undef HAVE_REGEXEC */
 #define HAVE_REGEX_H 1
+#define HAVE_REGWEXEC 1
 #define HAVE_REOPENFILE 1
 /* #undef HAVE_SETENV */
 /* #undef HAVE_SETRLIMIT */

src/common/fd.c

@@ -199,7 +199,7 @@ void _zz_fd_fini(void)
 
 int _zz_mustwatch(char const *file)
 {
-#if defined HAVE_REGEX_H
+#if defined HAVE_REGEXEC
     if(has_include && regexec(&re_include, file, 0, NULL, 0) == REG_NOMATCH)
         return 0; /* not included: ignore */
 
@@ -214,7 +214,7 @@ int _zz_mustwatch(char const *file)
 
 int _zz_mustwatchw(wchar_t const *file)
 {
-#if defined HAVE_REGEX_H
+#if defined HAVE_REGWEXEC
     if(has_include && regwexec(&re_include, file, 0, NULL, 0) == REG_NOMATCH)
         return 0; /* not included: ignore */
 

src/common/fd.h

@@ -14,6 +14,9 @@
  *  fd.h: file descriptor functions
  */
 
+#include <stdint.h>
+#include <wchar.h>
+
 extern void _zz_include(char const *);
 extern void _zz_exclude(char const *);
 extern void _zz_setseed(int32_t);