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Support building C++ files with MSVC

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Made appropriate changes to be able to successfully
build C++ files using a Visual C++ build on Windows.

Based on an earlier patch by Kyle Schwarz.

Comments:

-- compat/w32pthreads.h: Made appropriate changes to w32pthreads.h to
   get it to build when it is being included in a C++ file and built
   with Visual C++.  This is mostly a copy of Kyle Schwarz's patch as
   described above.

-- configure:
a) Now calling set_ccvars CXX to cause the various CXX_ variables to
   be setup properly.  For example, with MSVC (Microsoft Visual C++),
   this causes CXX_O to be set to -Fo$@ instead of using the default
   value.  The default value does not work with Visual C++.  This
   change will also have the impact of correcting CXX_O (and possibly
   CXX_C) for other compilers, although this is really only relevant
   for the Intel compiler, in addition to MSVC.
b) Now using cl for the C++ compiler for the MSVC toolchain.  This is
   currently only relevant for building the
   Blackmagic/Decklink-related files under avdevice.

Signed-off-by: Hendrik Leppkes <h.leppkes@gmail.com>
This commit is contained in:
Aaron Levinson
2017-04-13 02:38:02 -07:00
committed by Hendrik Leppkes
parent e688ca102e
commit bceb3d0f86
2 changed files with 11 additions and 7 deletions
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14
compat/w32pthreads.h
View File

@ -77,7 +77,7 @@ typedef struct pthread_cond_t {
static av_unused unsigned __stdcall attribute_align_arg win32thread_worker(void *arg)
{
pthread_t *h = arg;
pthread_t *h = (pthread_t*)arg;
h->ret = h->func(h->arg);
return 0;
}
@ -270,7 +270,7 @@ static av_unused int pthread_cond_init(pthread_cond_t *cond, const void *unused_
}
/* non native condition variables */
win32_cond = av_mallocz(sizeof(win32_cond_t));
win32_cond = (win32_cond_t*)av_mallocz(sizeof(win32_cond_t));
if (!win32_cond)
return ENOMEM;
cond->Ptr = win32_cond;
@ -288,7 +288,7 @@ static av_unused int pthread_cond_init(pthread_cond_t *cond, const void *unused_
static av_unused int pthread_cond_destroy(pthread_cond_t *cond)
{
win32_cond_t *win32_cond = cond->Ptr;
win32_cond_t *win32_cond = (win32_cond_t*)cond->Ptr;
/* native condition variables do not destroy */
if (cond_init)
return 0;
@ -305,7 +305,7 @@ static av_unused int pthread_cond_destroy(pthread_cond_t *cond)
static av_unused int pthread_cond_broadcast(pthread_cond_t *cond)
{
win32_cond_t *win32_cond = cond->Ptr;
win32_cond_t *win32_cond = (win32_cond_t*)cond->Ptr;
int have_waiter;
if (cond_broadcast) {
@ -337,7 +337,7 @@ static av_unused int pthread_cond_broadcast(pthread_cond_t *cond)
static av_unused int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
{
win32_cond_t *win32_cond = cond->Ptr;
win32_cond_t *win32_cond = (win32_cond_t*)cond->Ptr;
int last_waiter;
if (cond_wait) {
cond_wait(cond, mutex, INFINITE);
@ -369,7 +369,7 @@ static av_unused int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mu
static av_unused int pthread_cond_signal(pthread_cond_t *cond)
{
win32_cond_t *win32_cond = cond->Ptr;
win32_cond_t *win32_cond = (win32_cond_t*)cond->Ptr;
int have_waiter;
if (cond_signal) {
cond_signal(cond);
@ -397,7 +397,7 @@ static av_unused int pthread_cond_signal(pthread_cond_t *cond)
static av_unused void w32thread_init(void)
{
#if _WIN32_WINNT < 0x0600
HANDLE kernel_dll = GetModuleHandle(TEXT("kernel32.dll"));
HMODULE kernel_dll = GetModuleHandle(TEXT("kernel32.dll"));
/* if one is available, then they should all be available */
cond_init = (void (WINAPI*)(pthread_cond_t *))
GetProcAddress(kernel_dll, "InitializeConditionVariable");