diff options
| author | Jörg Krause <joerg.krause@embedded.rocks> | 2016-03-06 15:50:03 +0100 |
|---|---|---|
| committer | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2016-03-06 15:59:46 +0100 |
| commit | 4cd669ff93cda2b54f18d8b955385a80eb2c6c0b (patch) | |
| tree | 21648c3ba0d35df0e600ddaa420d7f44a397ef7e /package/czmq | |
| parent | 7a960de66f706366cf408b58b957a5e4d89eab18 (diff) | |
| download | buildroot-4cd669ff93cda2b54f18d8b955385a80eb2c6c0b.tar.gz buildroot-4cd669ff93cda2b54f18d8b955385a80eb2c6c0b.zip | |
package/czmq: fix static linking
Currently, building czmq statically fails for some architectures with undefined
references to the math library:
/usr/powerpc-buildroot-linux-uclibc/sysroot/usr/lib/libstdc++.a(compatibility-ldbl.o): In function `std::tr1::hash<long double>::operator()(long double) const':
compatibility-ldbl.cc:(.text._ZNKSt3tr14hashIeEclEe+0x3c): undefined reference to `frexpl'
It turns out that this is actually a problem with libstdc++. Depending on the
arch, some functions will be in compatibility-ldbl.o. If you use any of these
functions, that file will be linked in. And when that file is linked in, all
the _other_ functions, which you actually don't use, are also linked in. And
one of these functions is the template function hash<long double>::operator(),
which uses frexpl.
Requiring czmq to link with -lm is a bit weird, given that neither itself,
nor any of its dependencies really need it...
So ideally it should be fixed in libstdc++ itself. However, as upstream
accepted a patch to link with -lm, we use this patch to fix static linking.
Fixes:
http://autobuild.buildroot.net/results/206/2061238affb685db998100a56c6571538d089a5b/
http://autobuild.buildroot.net/results/caf/caf002d213c9dd09df07858c5c199411ca8ddfa3/
http://autobuild.buildroot.net/results/568/568ac92d2f6d0604b9bf354ea9dca0a7cb5341f6/
http://autobuild.buildroot.net/results/945/9452982fc14f579c61b45a1a189db5f89aab3b80/
Cc: Arnout Vandecappelle <arnout@mind.be>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Diffstat (limited to 'package/czmq')
| -rw-r--r-- | package/czmq/czmq.hash | 1 | ||||
| -rw-r--r-- | package/czmq/czmq.mk | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/package/czmq/czmq.hash b/package/czmq/czmq.hash index 6398552944..20ed7b611d 100644 --- a/package/czmq/czmq.hash +++ b/package/czmq/czmq.hash @@ -1,2 +1,3 @@ # Locally calculated sha256 e56f8498daf70310b31c42669b2f9b753c5e747eafaff6d4fdac26d72a474b27 czmq-v3.0.2.tar.gz +sha256 74e003c05ab1391502dff2eaad96a5361b19583cd1ee0ad681c929721c8e1e3a bcf583633e8b27a9bfbed1e4a717b9373f7446be.patch diff --git a/package/czmq/czmq.mk b/package/czmq/czmq.mk index 0060c8979f..2b73b6135a 100644 --- a/package/czmq/czmq.mk +++ b/package/czmq/czmq.mk @@ -6,6 +6,7 @@ CZMQ_VERSION = v3.0.2 CZMQ_SITE = $(call github,zeromq,czmq,$(CZMQ_VERSION)) +CZMQ_PATCH = https://github.com/zeromq/czmq/commit/bcf583633e8b27a9bfbed1e4a717b9373f7446be.patch # Autoreconf required as we use the git tree CZMQ_AUTORECONF = YES |
