From cbbc0b2a3ede1234b66ebdc394aad725a67b5910 Mon Sep 17 00:00:00 2001
From: Mika Lindqvist <postmaster@raasu.org>
Date: Wed, 29 Apr 2015 19:09:26 +0300
Subject: [PATCH] Fix forced inlining to work with Visual Studio.

---
 deflate.c          | 2 +-
 win32/Makefile.msc | 2 +-
 zutil.h            | 6 ++++++
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/deflate.c b/deflate.c
index da42bb30..09d486c4 100644
--- a/deflate.c
+++ b/deflate.c
@@ -213,7 +213,7 @@ local inline Pos insert_string(deflate_state *z_const s, z_const Pos str)
 
 
 #ifndef NOT_TWEAK_COMPILER
-__attribute__ ((always_inline)) local void 
+alwaysinline local void 
 bulk_insert_str(deflate_state *s, Pos startpos, uInt count) {
     uInt idx;
     for (idx = 0; idx < count; idx++) {
diff --git a/win32/Makefile.msc b/win32/Makefile.msc
index d7a9ec8d..318be92e 100644
--- a/win32/Makefile.msc
+++ b/win32/Makefile.msc
@@ -22,7 +22,7 @@ LD = link
 AR = lib
 RC = rc
 CFLAGS  = -nologo -MD -W3 -O2 -Oy- -Zi -Fd"zlib" $(LOC)
-WFLAGS  = -D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE -DNOT_TWEAK_COMPILER
+WFLAGS  = -D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE
 LDFLAGS = -nologo -debug -incremental:no -opt:ref -manifest
 ARFLAGS = -nologo
 RCFLAGS = /dWIN32 /r
diff --git a/zutil.h b/zutil.h
index 5feddb24..d0cab497 100644
--- a/zutil.h
+++ b/zutil.h
@@ -96,6 +96,12 @@ extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
    But it provides __inline instead, so use that. */
 #if defined(_MSC_VER) && !defined(inline)
 #  define inline __inline
+#endif
+
+#if defined(_MSC_VER)
+#  define alwaysinline __forceinline
+#else
+#  define alwaysinline __attribute__ ((always_inline))
 #endif
 
         /* common defaults */
-- 
2.47.2