[vlc-commits] configure: link with synchronization library when building for win8+

[Steve Lhomme]

vlc/vlc-3.0 | branch: master | Steve Lhomme <robux4 at ycbcr.xyz> | Fri Jun  5 10:46:56 2020 +0200| [e55fba35b4e8a66d0f8d4304bb7111dd4ea4586d] | committer: Steve Lhomme

configure: link with synchronization library when building for win8+

That's what should be used when calling WaitOnAddress.
It's not part of the kernel32.dll anymore.

https://docs.microsoft.com/en-us/windows/win32/api/synchapi/nf-synchapi-waitonaddress

(cherry picked from commit 6cf8a7f8996b3684558bbac9177d09bedd912f91) (rebased)

rebased:
- the default windows version in this branch is XP, not Windows7

Signed-off-by: Steve Lhomme <robux4 at ycbcr.xyz>

> http://git.videolan.org/gitweb.cgi/vlc/vlc-3.0.git/?a=commit;h=e55fba35b4e8a66d0f8d4304bb7111dd4ea4586d
---

 configure.ac | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/configure.ac b/configure.ac
index 6ac9a9f256..1eb7d02631 100644
--- a/configure.ac
+++ b/configure.ac
@@ -235,6 +235,18 @@ case "${host_os}" in
     ],[
       AC_DEFINE([_WIN32_WINNT], 0x0502, [Define to '0x0502' for Windows XP SP2 APIs.])
     ])
+    AC_MSG_CHECKING([if libsynchronization is needed])
+    AC_PREPROC_IFELSE([AC_LANG_PROGRAM(
+      [[#if _WIN32_WINNT >= 0x0602
+       # error building for Win8+ and above
+       #endif
+      ]],[[;]])
+    ],[
+      AC_MSG_RESULT([no])
+    ],[
+      AC_MSG_RESULT([yes])
+      VLC_ADD_LIBS([libvlccore], [-lsynchronization])
+    ])
     AC_DEFINE([_WIN32_IE], 0x0600, [Define to '0x0600' for IE 6.0 (and shell) APIs.])
     AC_DEFINE([_UNICODE], [1], [Define to 1 for Unicode (Wide Chars) APIs.])
     AC_DEFINE([UNICODE], [1], [Define to 1 for Unicode (Wide Chars) APIs.])