[dpdk-dev] [PATCH v2 3/3] eal: remove references to execinfo.h for musl

[Wei Dai <wei.dai@intel.com>]

execinfo.h is not supported by musl now.
need to remove references to execinfo.h to
build DPDK with musl.

musl is an implementation of the userspace portion
of the standard library functionality described in
the ISO C and POSIX standards, plus common extensions.

Get more details about musl from
http://www.musl-libc.org

This also aplies to some other LIBC implementation which
doesn't support backtrace( ) and backtrace_symbols( ).

Signed-off-by: Wei Dai <wei.dai@intel.com>
---
 lib/librte_eal/linuxapp/eal/eal_debug.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/librte_eal/linuxapp/eal/eal_debug.c b/lib/librte_eal/linuxapp/eal/eal_debug.c
index 5fbc17c..3a9aee9 100644
--- a/lib/librte_eal/linuxapp/eal/eal_debug.c
+++ b/lib/librte_eal/linuxapp/eal/eal_debug.c
@@ -31,7 +31,9 @@
  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#ifdef RTE_EAL_ENABLE_BACKTRACE
 #include <execinfo.h>
+#endif
 #include <stdarg.h>
 #include <signal.h>
 #include <stdlib.h>
@@ -47,6 +49,7 @@
 /* dump the stack of the calling core */
 void rte_dump_stack(void)
 {
+#ifdef RTE_EAL_ENABLE_BACKTRACE
 	void *func[BACKTRACE_SIZE];
 	char **symb = NULL;
 	int size;
@@ -64,6 +67,7 @@ void rte_dump_stack(void)
 	}
 
 	free(symb);
+#endif
 }
 
 /* not implemented in this environment */
-- 
2.7.4