rabbitmq-c currently fails to build in a number of static linking
situations, due to two issues:
- CMake FindOpenSSL module is buggy. Even though it uses pkg-config,
it doesn't use the information returned by pkg-config, and
therefore doesn't know about second order libraries that need be
part of the link for static linking to succeed. Due to this, -lz is
not passed, and therefore rabbitmq-c fails when linking against
libssl/libcrypto. This issue has been reported to upstream CMake at
https://gitlab.kitware.com/cmake/cmake/issues/16885.
- popt might use libintl, but CMake doesn't know about that. For
autotools based packages, we typically work around this by passing
LIBS=, but CMake apparently has no equivalent to LIBS=.
To workaround this, we only use the OpenSSL and Popt optional
dependencies in dynamic linking situations.
Fixes:
http://autobuild.buildroot.net/results/798dbe5e5fd0463bb2066cb115656795144c327f/
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
beb6524225