With CMake, you can control compilation and link flags with the following
environment variables:
* CC: specify C compiler
* CFLAGS: C compiler flags
* CXX: specify C++ compiler
* CXXFLAGS: C++ compiler flags
* LDFLAGS: linker flags
And to finish you can overload make command for generation using CMAKE_COMMAND
option of ExternalProject_Add:
CMAKE_CMMAND “${CMAKE_COMMAND}” -E env CXX=${CMAKE_CXX_COMPILER} LDFLAGS=“…”
“${CMAKE_COMMAND}”
From: CMake <cmake-boun...@cmake.org<mailto:cmake-boun...@cmake.org>> on behalf
of Cedric Doucet <cedric.dou...@inria.fr<mailto:cedric.dou...@inria.fr>>
Date: Thursday 10 December 2015 at 18:21
To: "cmake@cmake.org<mailto:cmake@cmake.org>"
<cmake@cmake.org<mailto:cmake@cmake.org>>
Subject: [CMake] ExternalProject_Add and inheritance
Hello,
I use the ExternalProject_Add command to manage third-party libraries.
In the same time, I need to overcome some compatibility problems between GCC 4
and GCC 5 (strings are not defined in the same way in the STL).
The solution I use is the one given here:
http://stackoverflow.com/questions/33500337/how-to-handle-dual-abi-in-gcc-5
It allows me to force to use the libstdc++.so given by the GCC repository given
to the cmake command.
The problem is that trick does not work with the ExternalProject_Add command
because configuration steps of third-party libraries are autonomous.
Do you know how to solve the problem?
For example, if I use the ExternalProject_Add command to manage a third-library
whose configuration also depends on a cmake script, how could I tell this
script to use the compilers and the libstdc++.so I provided to my own cmake
script?
Best,
Cédric
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