[Buildroot] [PATCH] ptpd2: fix bfin compile by avoiding gcc bug

[Waldemar Brodkorb]

 Fixes:
  http://autobuild.buildroot.net/results/cb967c8af006caa9272e800968f794ca018a7a27
  http://autobuild.buildroot.net/results/9a046dc5ef390e562b89338f0afeaef14b945458

Signed-off-by: Waldemar Brodkorb <wbx at openadk.org>
---
 package/ptpd2/ptpd2.mk | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/package/ptpd2/ptpd2.mk b/package/ptpd2/ptpd2.mk
index da6a106..43b59dc 100644
--- a/package/ptpd2/ptpd2.mk
+++ b/package/ptpd2/ptpd2.mk
@@ -24,6 +24,12 @@ else
 PTPD2_CONF_OPTS += --disable-snmp
 endif
 
+# GCC bug with Os/O1/O2/O3
+# internal compiler error: in gen_add2_insn, at optabs.c:4454
+ifeq ($(BR2_bfin),y)
+PTPD2_CONF_ENV += CFLAGS="-O0"
+endif
+
 define PTPD2_INSTALL_INIT_SYSV
 	$(INSTALL) -m 755 -D package/ptpd2/S65ptpd2 \
 		$(TARGET_DIR)/etc/init.d/S65ptpd2
-- 
2.1.4