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configure: Support MSVC 2015

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The C runtime C99 compatibility had been improved a lot and it now
rejects some of the compatibility defines provided for the older
versions.

Many thanks to Ray for the time spent testing.

Bug-Id: 864
CC: libav-stable@libav.org
This commit is contained in:
Luca Barbato 2015-06-05 15:07:06 +02:00
parent bc76c46943
commit a6f19d6a9f
2 changed files with 16 additions and 17 deletions
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22
configure vendored
View File

@ -3021,9 +3021,6 @@ probe_cc(){
_ld_path='-libpath:'
_flags='-nologo'
_cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
if [ $pfx = hostcc ]; then
append _cflags -Dsnprintf=_snprintf
fi
elif $_cc 2>&1 | grep -q Intel; then
_type=icl
_ident=$($_cc 2>&1 | head -n1)
@ -3047,9 +3044,6 @@ probe_cc(){
# -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
# with MSVC which enables it by default.
_cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
if [ $pfx = hostcc ]; then
append _cflags -Dsnprintf=_snprintf
fi
elif $_cc --version 2>/dev/null | grep -q ^cparser; then
_type=cparser
_ident=$($_cc --version | head -n1)
@ -3743,6 +3737,16 @@ probe_libc(){
add_${pfx}cppflags -D__printf__=__gnu_printf__
elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
eval ${pfx}libc_type=msvcrt
if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
if [ "$pfx" = host_ ]; then
add_host_cppflags -Dsnprintf=_snprintf
else
add_compat strtod.o strtod=avpriv_strtod
add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf \
_snprintf=avpriv_snprintf \
vsnprintf=avpriv_vsnprintf
fi
fi
# The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
# 0x601 by default unless something else is set by the user.
# This can easily lead to us detecting functions only present
@ -3773,12 +3777,6 @@ case $libc_type in
bionic)
add_compat strtod.o strtod=avpriv_strtod
;;
msvcrt)
add_compat strtod.o strtod=avpriv_strtod
add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf \
_snprintf=avpriv_snprintf \
vsnprintf=avpriv_vsnprintf
;;
esac
# hacks for compiler/libc/os combinations

11
libavutil/internal.h
View File

@ -130,11 +130,6 @@
#include "libm.h"
#if defined(_MSC_VER)
#pragma comment(linker, "/include:"EXTERN_PREFIX"avpriv_strtod")
#pragma comment(linker, "/include:"EXTERN_PREFIX"avpriv_snprintf")
#endif
/**
* Return NULL if CONFIG_SMALL is true, otherwise the argument
* without modification. Used to disable the definition of strings
@ -208,6 +203,12 @@ void avpriv_request_sample(void *avc,
const char *msg, ...) av_printf_format(2, 3);
#if HAVE_LIBC_MSVCRT
#include <crtversion.h>
#if defined(_VC_CRT_MAJOR_VERSION) && _VC_CRT_MAJOR_VERSION < 14
#pragma comment(linker, "/include:"EXTERN_PREFIX"avpriv_strtod")
#pragma comment(linker, "/include:"EXTERN_PREFIX"avpriv_snprintf")
#endif
#define avpriv_open ff_open
#endif