If LLVM is compiled with the LLVM_VERSION_SUFFIX cmake option, then the
version may have an additional suffix, for example "18.1.7+libcxx".
Gentoo for example uses this to fend off ABI issues between libstdc++
and libc++.
Signed-off-by: Violet Purcell <vimproved@inventati.org>
get_clang_ver fails if clang is built from scratch.
Teach get_clang_ver to recognize the clang version even for clang built
from git.
These are the tests I ran:
# /usr/local/bin/clang --version
clang version 18.0.0git (https://github.com/llvm/llvm-project.git c458f928fad7bbcf08ab1da9949eb2969fc9f89c)
# meson-scripts/get_clang_ver /usr/local/bin/clang
18.0.0
# /usr/bin/clang --version
clang version 17.0.6 (CentOS 17.0.6-5.el9)
# meson-scripts/get_clang_ver /usr/bin/clang
17.0.6
Signed-off-by: Breno Leitao <leitao@debian.org>
Some distro may add their own prefix to the version string of clang, for
example in Ubuntu:
$ clang --version
Ubuntu clang version 17.0.5 (1ubuntu1)
...
That triggers the following meson error during the setup phase:
meson.build:25:44: ERROR: String '' cannot be converted to int
Change the regexp used to evaluate the clang version to avoid this
build failure.
Signed-off-by: Andrea Righi <andrea.righi@canonical.com>
