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configure: check for _beginthreadex

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fixes thread support detection in e.g., cross-compiles/mingw installs
without libpthread, the behavior is unchanged in mingw installs with
libpthread. in the latter case although libpthread is detected the
windows api (_beginthreadex) path is being used.

Change-Id: Ie5f39f15f380731a1006a2497496d627f08fa103
This commit is contained in:
James Zern 2014-07-20 14:56:37 -07:00
parent 1549d62067
commit 40b086f78a
1 changed files with 5 additions and 1 deletions
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6
configure.ac
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@ -161,7 +161,11 @@ if test "$enable_threading" = "yes"; then
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
CC="$PTHREAD_CC"
],
[enable_threading=no])
[AC_CHECK_FUNC([_beginthreadex],
[AC_DEFINE([WEBP_USE_THREAD], [1],
[Undefine this to disable thread
support.])],
[enable_threading=no])])
fi
AC_MSG_NOTICE([checking if threading is enabled... ${enable_threading-no}])