Makefile.vc: add a 'legacy' RTLIBCFG option
disables buffer security checks (/GS-) and any machine optimizations
(e.g., sse2)
fixes issue #228
Change-Id: I81fa483dc1654199b2017626320383d2d63317dc
diff --git a/Makefile.vc b/Makefile.vc
index e86ac79..70d6859 100644
--- a/Makefile.vc
+++ b/Makefile.vc
@@ -27,7 +27,7 @@
NOLOGO = /nologo
CCNODBG = cl.exe $(NOLOGO) /O2 /DNDEBUG
CCDEBUG = cl.exe $(NOLOGO) /Od /Gm /Zi /D_DEBUG /RTC1
-CFLAGS = /Isrc $(NOLOGO) /W3 /EHsc /c /GS
+CFLAGS = /Isrc $(NOLOGO) /W3 /EHsc /c
CFLAGS = $(CFLAGS) /DWIN32 /D_CRT_SECURE_NO_WARNINGS /DWIN32_LEAN_AND_MEAN
CFLAGS = $(CFLAGS) /DHAVE_WINCODEC_H /DWEBP_USE_THREAD
LDFLAGS = /LARGEADDRESSAWARE /MANIFEST /NXCOMPAT /DYNAMICBASE
@@ -54,6 +54,11 @@
!IF "$(RTLIBCFG)" == "static"
RTLIB = /MT
RTLIBD = /MTd
+!ELSE IF "$(RTLIBCFG)" == "legacy"
+RTLIBCFG = static
+RTLIB = /MT
+RTLIBD = /MTd
+CFLAGS = $(CFLAGS) /GS- /arch:IA32
!ELSE
RTLIB = /MD
RTLIBD = /MDd
@@ -139,6 +144,7 @@
!MESSAGE - all - build (de)mux-based targets for CFG
!MESSAGE
!MESSAGE RTLIBCFG controls the runtime library linkage - 'static' or 'dynamic'.
+!MESSAGE 'legacy' will produce a Windows 2000 compatible library.
!MESSAGE OBJDIR is the path where you like to build (obj, bins, etc.),
!MESSAGE defaults to ..\obj
