[FFmpeg-cvslog] cmdutils: check for SetDllDirectory() availability

[James Almer]

ffmpeg | branch: release/3.1 | James Almer <jamrial at gmail.com> | Mon Aug 22 19:25:50 2016 -0300| [f4b8892ccbf08ea5b38177bb7ad042921d082eac] | committer: James Almer

cmdutils: check for SetDllDirectory() availability

It's only available on Windows XP or newer.

Should fix compilation with mingw32 using the default OS target.

Reviewed-by: Michael Niedermayer <michael at niedermayer.cc>
Signed-off-by: James Almer <jamrial at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f4b8892ccbf08ea5b38177bb7ad042921d082eac
---

 cmdutils.c | 2 +-
 configure  | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/cmdutils.c b/cmdutils.c
index 6960f8c..a725e77 100644
--- a/cmdutils.c
+++ b/cmdutils.c
@@ -109,7 +109,7 @@ static void log_callback_report(void *ptr, int level, const char *fmt, va_list v
 
 void init_dynload(void)
 {
-#ifdef _WIN32
+#if HAVE_SETDLLDIRECTORY
     /* Calling SetDllDirectory with the empty string (but not NULL) removes the
      * current working directory from the DLL search path as a security pre-caution. */
     SetDllDirectory("");
diff --git a/configure b/configure
index adb4c27..5b069eb 100755
--- a/configure
+++ b/configure
@@ -1935,6 +1935,7 @@ SYSTEM_FUNCS="
     sched_getaffinity
     SetConsoleTextAttribute
     SetConsoleCtrlHandler
+    SetDllDirectory
     setmode
     setrlimit
     Sleep
@@ -5475,6 +5476,7 @@ check_func_headers windows.h MapViewOfFile
 check_func_headers windows.h PeekNamedPipe
 check_func_headers windows.h SetConsoleTextAttribute
 check_func_headers windows.h SetConsoleCtrlHandler
+check_func_headers windows.h SetDllDirectory
 check_func_headers windows.h Sleep
 check_func_headers windows.h VirtualAlloc
 check_struct windows.h "CONDITION_VARIABLE" Ptr