[nginx] Win32: Open Watcom C compatibility fixes.

[Maxim Dounin]

details:   http://hg.nginx.org/nginx/rev/670ceaba03d8
branches:  
changeset: 5358:670ceaba03d8
user:      Maxim Dounin <mdounin at mdounin.ru>
date:      Wed Sep 04 20:48:22 2013 +0400
description:
Win32: Open Watcom C compatibility fixes.

Precompiled headers are disabled as they lead to internal compiler errors
with long configure lines.  Couple of false positive warnings silenced.
Various win32 typedefs are adjusted to work with Open Watcom C 1.9 headers.

With this patch, it's now again possible to compile nginx using owc386,
with options we normally compile on win32 minus ipv6 and ssl.

diffstat:

 auto/cc/owc                            |   8 ++++----
 auto/lib/pcre/makefile.owc             |   2 +-
 src/core/ngx_string.c                  |   2 +-
 src/http/modules/ngx_http_mp4_module.c |   2 +-
 src/os/win32/ngx_win32_config.h        |  14 ++++++++++++++
 5 files changed, 21 insertions(+), 7 deletions(-)

diffs (85 lines):

diff --git a/auto/cc/owc b/auto/cc/owc
--- a/auto/cc/owc
+++ b/auto/cc/owc
@@ -65,10 +65,10 @@ have=NGX_HAVE_C99_VARIADIC_MACROS . auto
 
 
 # the precompiled headers
-CORE_DEPS="$CORE_DEPS $NGX_OBJS/ngx_config.pch"
-NGX_PCH="$NGX_OBJS/ngx_config.pch"
-NGX_BUILD_PCH="-fhq=$NGX_OBJS/ngx_config.pch"
-NGX_USE_PCH="-fh=$NGX_OBJS/ngx_config.pch"
+#CORE_DEPS="$CORE_DEPS $NGX_OBJS/ngx_config.pch"
+#NGX_PCH="$NGX_OBJS/ngx_config.pch"
+#NGX_BUILD_PCH="-fhq=$NGX_OBJS/ngx_config.pch"
+#NGX_USE_PCH="-fh=$NGX_OBJS/ngx_config.pch"
 
 
 # the link flags, built target is NT GUI mode application
diff --git a/auto/lib/pcre/makefile.owc b/auto/lib/pcre/makefile.owc
--- a/auto/lib/pcre/makefile.owc
+++ b/auto/lib/pcre/makefile.owc
@@ -4,7 +4,7 @@
 
 
 CFLAGS =	-c -zq -bt=nt -ot -op -oi -oe -s -bm $(CPU_OPT)
-PCREFLAGS =	-DHAVE_CONFIG_H -DPCRE_STATIC -DPOSIX_MALLOC_THRESHOLD=10 \
+PCREFLAGS =	-DHAVE_CONFIG_H -DPCRE_STATIC -DPOSIX_MALLOC_THRESHOLD=10 &
 		-DSUPPORT_PCRE8 -DHAVE_MEMMOVE
 
 
diff --git a/src/core/ngx_string.c b/src/core/ngx_string.c
--- a/src/core/ngx_string.c
+++ b/src/core/ngx_string.c
@@ -486,7 +486,7 @@ ngx_sprintf_num(u_char *buf, u_char *las
 
     if (hexadecimal == 0) {
 
-        if (ui64 <= NGX_MAX_UINT32_VALUE) {
+        if (ui64 <= (uint64_t) NGX_MAX_UINT32_VALUE) {
 
             /*
              * To divide 64-bit numbers and to find remainders
diff --git a/src/http/modules/ngx_http_mp4_module.c b/src/http/modules/ngx_http_mp4_module.c
--- a/src/http/modules/ngx_http_mp4_module.c
+++ b/src/http/modules/ngx_http_mp4_module.c
@@ -1129,7 +1129,7 @@ ngx_http_mp4_update_mdat_atom(ngx_http_m
 
     atom_header = mp4->mdat_atom_header;
 
-    if ((uint64_t) atom_data_size > 0xffffffff) {
+    if ((uint64_t) atom_data_size > (uint64_t) 0xffffffff) {
         atom_size = 1;
         atom_header_size = sizeof(ngx_mp4_atom_header64_t);
         ngx_mp4_set_64value(atom_header + sizeof(ngx_mp4_atom_header_t),
diff --git a/src/os/win32/ngx_win32_config.h b/src/os/win32/ngx_win32_config.h
--- a/src/os/win32/ngx_win32_config.h
+++ b/src/os/win32/ngx_win32_config.h
@@ -128,13 +128,27 @@ typedef unsigned short int  uint16_t;
 
 typedef __int64             int64_t;
 typedef unsigned __int64    uint64_t;
+
+#ifndef __WATCOMC__
 typedef int                 intptr_t;
 typedef u_int               uintptr_t;
+#endif
+
 
 /* Windows defines off_t as long, which is 32-bit */
 typedef __int64             off_t;
 #define _OFF_T_DEFINED
 
+#ifdef __WATCOMC__
+
+/* off_t is redefined by sys/types.h used by zlib.h */
+#define __TYPES_H_INCLUDED
+typedef int                 dev_t;
+typedef unsigned int        ino_t;
+
+#endif
+
+
 typedef int                 ssize_t;
 typedef uint32_t            in_addr_t;
 typedef u_short             in_port_t;