Add the function cmake_expand_imported_targets() to expand imported
targets in a list of libraries into their on-disk file names for a
particular configuration. Adapt the implementation from KDE's
HANDLE_IMPORTED_TARGETS_IN_CMAKE_REQUIRED_LIBRARIES which has been in
use for over 2 years. Call the function from all the Check*.cmake
macros to handle imported targets named in CMAKE_REQUIRED_LIBRARIES.
Alex
We can be sure that at least cmake 2.6.3 is used when building cmcurl.
This means we always get in the first branch of the if().
I think it is not a good idea to pull a cmake module from the cmake
which is being built in, since this may use features which are not
supported in the cmake which is used to build cmake (e.g. CMAKE_CURRENT_LIST_DIR
which does not exist in cmake 2.6.3 which is the minimum for cmcurl).
A bit further below there is anyway code to handle the case that cmake is
older than 2.8.0, so it should be ok.
Alex
A lot of the libraries won't be found by default so will spit out
all sorts of errors. Don't kill QT_LIBRARIES_PLUGINS altogether as
it is sometimes useful.
The Borland compiler was re-branded as CodeGear during 2007-2009 and
since 2009 is the Embarcadero compiler. They offer predefined macros:
http://docwiki.embarcadero.com/RADStudio/en/Predefined_Macros
and distinguish themselves by __CODEGEARC__ and __CODEGEARC_VERSION__.
Version 6.30 (C++Builder XE) changed the meaning of some flags:
http://docwiki.embarcadero.com/RADStudio/en/C%2B%2B_Compiler_Option_Changes_for_XE
Teach Embarcadero compiler information files to generate build rules
with flags matching the compiler version. Leave the flags unchanged
for old Borland versions. Always set the BORLAND toolchain indicator
for compatibility with existing projects that test it. Also set the
EMBARCADERO indicator for newer toolchains.
MIPS machines are biendian hence they can run both big endian kernels
e.g. Debian mips architecture, and little endian kernels e.g. Debian
mipsel architecture. Use predefined macros to distinguish them.
Generally these are only required in build statements, as Ninja wants
to be able to chop paths up. But it doesn't hurt to also try to use
them in command line arguments.
The GenerateExportHeaders test was failing on one machine, the version
could not be determined there, so the _gcc_version was empty,
so the first argument to if() was empty, so it complained:
http://open.cdash.org/testDetails.php?test=135623436&build=2016288
Use double quotes to turn the non-existant first argument into an empty
string.
Alex
Since we know which compiler we have we can test those OpenMP flags first that
are likely to be correct. This doesn't make any difference for GNU compilers,
but it should avoid useless try_compiles and output cluttering for all others.