Jenkins build is failing with an unresolved symbol __builtin_bswap16. The jenkins instance is on Debian 6 (oldstable) with gcc 4.4.5, which doesn't provide an implementation for this.
Here's a quick patch to provide a fallback, which should unbreak the integration tests. -r
From fce1c517987bf691e49a510ef09b3ca81646db69 Mon Sep 17 00:00:00 2001 From: Ralph Giles <gi...@thaumas.net> Date: Wed, 2 Jul 2014 14:12:38 -0700 Subject: [PATCH] Fix bswap16 issue on Debian 6. Versions of GCC prior to 4.8 didn't provide an implementation of __builtin_bswap16 on x86_64. Detect those versions and supply a fallback implementation. A cleaner fix would be to detect bswap16 independently of bswap32 in configure and handle them separately. See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52624 --- include/share/endswap.h | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/include/share/endswap.h b/include/share/endswap.h index 058fe0b..de933e6 100644 --- a/include/share/endswap.h +++ b/include/share/endswap.h @@ -33,6 +33,14 @@ #if HAVE_BSWAP32 /* GCC and Clang */ +/* GCC prior to 4.8 didn't provide bswap16 on x86_64 */ +#if __GNUC__ <= 4 && __GNUC_MINOR__ < 8 +static inline unsigned short __builtin_bswap16(unsigned short a) +{ + return (a<<8)|(a>>8); +} +#endif + #define ENDSWAP_16(x) (__builtin_bswap16 (x)) #define ENDSWAP_32(x) (__builtin_bswap32 (x)) -- 1.7.2.5
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