Look for pthreads functionality in libc.
If there is no libpthread, look for pthreads functionality in libc
before failing to configure pthreads. This is necessary on at least the
Android platform.
Reported by Mike Hommey.
diff --git a/configure.ac b/configure.ac
index 295e646..47d5784 100644
--- a/configure.ac
+++ b/configure.ac
@@ -746,8 +746,11 @@
dnl Configure pthreads.
AC_CHECK_HEADERS([pthread.h], , [AC_MSG_ERROR([pthread.h is missing])])
+dnl Some systems may embed pthreads functionality in libc; check for libpthread
+dnl first, but try libc too before failing.
AC_CHECK_LIB([pthread], [pthread_create], [LIBS="$LIBS -lpthread"],
- [AC_MSG_ERROR([libpthread is missing])])
+ [AC_SEARCH_LIBS([pthread_create], , ,
+ AC_MSG_ERROR([libpthread is missing]))])
CPPFLAGS="$CPPFLAGS -D_REENTRANT"