kumquat-buildroot/package/czmq/czmq.hash

# Locally calculated
sha256  e56f8498daf70310b31c42669b2f9b753c5e747eafaff6d4fdac26d72a474b27  czmq-v3.0.2.tar.gz
sha256  74e003c05ab1391502dff2eaad96a5361b19583cd1ee0ad681c929721c8e1e3a  bcf583633e8b27a9bfbed1e4a717b9373f7446be.patch
package/czmq: add hash file Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> 2016-03-05 21:02:23 +01:00			`# Locally calculated`
			`sha256 e56f8498daf70310b31c42669b2f9b753c5e747eafaff6d4fdac26d72a474b27 czmq-v3.0.2.tar.gz`
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> 2016-03-06 15:50:03 +01:00			`sha256 74e003c05ab1391502dff2eaad96a5361b19583cd1ee0ad681c929721c8e1e3a bcf583633e8b27a9bfbed1e4a717b9373f7446be.patch`