Long overdue MinGW port maintenance.

* Makefile: Use new EXE variable from config.mk.

* configure (exe, have_windows_h): New variables.
Handle situations with .exe suffix; on MiGW, the rm command
doesn't work on executables if the .exe suffix is not given.
New tests for localtime_r and gmtime_r.

* lib.c: Supply declarations which are missing on MinGW because
we use gcc -ansi, because MinGW doesn't follow established conventions
like -D_POSIX_SOURCE.  Supply definitions for gmtime_r, localtime_r,
setenv and unsetenv.

* parser.l: Supply declarations which are missing on MinGW.

* signal.h (async_sig_enabled): Declare differently based on
HAVE_POSIX_SIGS.
Misspelled typedef fixed in the code for !HAVE_POSIX_SIGS
that has hitherto not been compiled.
(sig_mask): Wrap declaration in #ifdef HAVE_POSIX_SIGS because
it relies on sigset_t.

* stream.c: Supply declarations which are missing on MinGW.
Include <windows.h> if we have it.
(sleep): Define for Windows.
(statf): Handle missing st_blksize and st_blocks members in struct
stat.
(stream_init): Handle numerous missing S_* macros.

* utf8.c: Supply declarations which are missing on MinGW.

1 files changed, 51 insertions, 0 deletions

diff --git a/lib.c b/lib.c
index 0939bd9a..54927f81 100644
--- a/lib.c
+++ b/lib.c
@@ -60,6 +60,15 @@
 #define max(a, b) ((a) > (b) ? (a) : (b))
 #define min(a, b) ((a) < (b) ? (a) : (b))
 
+#if HAVE_WINDOWS_H
+int putenv(const char *);
+int tzset(void);
+#endif
+
+#if !HAVE_POSIX_SIGS
+int async_sig_enabled = 0;
+#endif
+
 val packages;
 
 val system_package, keyword_package, user_package;
@@ -5086,6 +5095,29 @@ val time_sec_usec(void)
   return cons(num(tv.tv_sec), num(tv.tv_usec));
 }
 
+#if !HAVE_GMTIME_R
+/*
+ * Ugly hacks for MingW, which uses the Microsft C Run Time Library, 
+ * whic in turn is stuck in the Dark Ages * without _r functions.
+ */
+struct tm *gmtime_r(const time_t *timep, struct tm *result);
+struct tm *localtime_r(const time_t *timep, struct tm *result);
+
+struct tm *gmtime_r(const time_t *timep, struct tm *result)
+{
+  struct tm *hack = gmtime(timep);
+  *result = *hack;
+  return hack;
+}
+
+struct tm *localtime_r(const time_t *timep, struct tm *result)
+{
+  struct tm *hack = localtime(timep);
+  *result = *hack;
+  return hack;
+}
+#endif
+
 static val string_time(struct tm *(*break_time_fn)(const time_t *, struct tm *),
                        char *format, time_t time)
 {
@@ -5158,6 +5190,25 @@ val make_time(val year, val month, val day,
   return make_time_impl(mktime, year, month, day, hour, minute, second, isdst);
 }
 
+#if !HAVE_SETENV
+static void
+setenv(const char *name, const char *value, int overwrite)
+{
+  int len = strlen(name)+1+strlen(value)+1;
+  char *str = (char *) chk_malloc(len);
+  (void) overwrite;
+  sprintf(str, "%s=%s", name, value);
+  putenv(str);
+} 
+
+static void
+unsetenv(const char *name)
+{
+  setenv(name, "", 1);
+}
+
+#endif
+
 #if !HAVE_TIMEGM
 static time_t timegm_hack(struct tm *tm)
 {