On 09/29/2015 04:38 AM, Ryan Schmidt wrote:
Hello, I am a developer with the MacPorts package management system, and I want
to report to you a bug in cmake 3.3.2 that affects OS X.
I was going to file a bug report in your issue tracker, but the bright yellow box at the
top of the "report issue" page made it sound like I should send my report here
instead.
The problem is that cmake cannot identify the compiler, when compiling any
project (that uses cmake) universally (i.e. for more than one architecture,
e.g. for both x86_64 and i386):
-- cmake version 3.3.2
-- The C compiler identification is unknown
-- The CXX compiler identification is unknown
This could cause programs that rely on identifying the compiler to either build
incorrectly or even (e.g. in the case of x265) to fail to build at all. For
cross-referencing purposes, this problem was previously reported to the
MacPorts project here:
https://trac.macports.org/ticket/48331
Is it possible that beyond setting CMAKE_OSX_ARCHITECTURES the project
also tries to manually add -arch flags to CFLAGS/CXXFLAGS?
The test binary produced for compiler identification with just
CMAKE_OSX_ARCHITECTURES set is not a fat binary for me and
identification is successful (CMake 3.3.2).
Manually adding "-arch x86_64 -arch i386" to the compiler flags breaks
this since now the test binary itself is also fat.
Nils
--
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