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Fix missing PTHREAD_MUTEX_RECURSIVE_NP
The musl C library does not provide the non portable
PTHREAD_MUTEX_RECURSIVE_NP. In addition, uClibc does not define it as
a #define, but as an enum value, so doing a #if defined() check
doesn't work properly. Instead, add a AC_CHECK_DECL() autoconf check.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
[Thomas: switch to an autoconf check.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Index: b/configure.in
===================================================================
--- a/configure.in
+++ b/configure.in
@@ -294,6 +294,10 @@
AC_DEFINE([HAVE_LIBPTHREAD], [], [Define if pthread library is there (-lpthread)])
AC_DEFINE([HAVE_PTHREAD_H], [], [Define if <pthread.h> is there])
WITH_THREADS="1"]))
+
+ AC_CHECK_DECL([PTHREAD_MUTEX_RECURSIVE_NP],
+ [AC_DEFINE([HAVE_PTHREAD_MUTEX_RECURSIVE_NP], [], [whether HAVE_PTHREAD_MUTEX_RECURSIVE_NP is defined])],
+ [], [#include <pthread.h>])
fi
dnl Use weak symbols on linux/gcc to avoid imposing libpthreads to apps
Index: b/libgamin/gam_data.c
===================================================================
--- a/libgamin/gam_data.c
+++ b/libgamin/gam_data.c
@@ -470,7 +470,7 @@
}
if (is_threaded > 0) {
pthread_mutexattr_init(&attr);
-#if defined(linux) || defined(PTHREAD_MUTEX_RECURSIVE_NP)
+#if defined(HAVE_PTHREAD_MUTEX_RECURSIVE_NP)
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE_NP);
#else
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
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