perf python: Check if clang supports -fno-semantic-interposition

The set of C compiler options used by distros to build python bindings
may include options that are unknown to clang, we check for a variety of
such options, add -fno-semantic-interposition to that mix:

This fixes the build on, among others, Manjaro Linux:

    GEN      /tmp/build/perf/python/perf.so
  clang-9: error: unknown argument: '-fno-semantic-interposition'
  error: command 'clang' failed with exit status 1
  make: Leaving directory '/git/perf/tools/perf'

  [perfbuilder@602aed1c266d ~]$ gcc -v
  Using built-in specs.
  COLLECT_GCC=gcc
  COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/9.3.0/lto-wrapper
  Target: x86_64-pc-linux-gnu
  Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-pkgversion='Arch Linux 9.3.0-1' --with-bugurl=https://bugs.archlinux.org/ --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++,d --enable-shared --enable-threads=posix --with-system-zlib --with-isl --enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object --enable-linker-build-id --enable-lto --enable-plugin --enable-install-libiberty --with-linker-hash-style=gnu --enable-gnu-indirect-function --enable-multilib --disable-werror --enable-checking=release --enable-default-pie --enable-default-ssp --enable-cet=auto gdc_include_dir=/usr/include/dlang/gdc
  Thread model: posix
  gcc version 9.3.0 (Arch Linux 9.3.0-1)
  [perfbuilder@602aed1c266d ~]$

Cc: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

Author: acmel

tools/perf/util/setup.py

@@ -21,6 +21,8 @@ def clang_has_option(option):
             vars[var] = sub("-fstack-clash-protection", "", vars[var])
         if not clang_has_option("-fstack-protector-strong"):
             vars[var] = sub("-fstack-protector-strong", "", vars[var])
+        if not clang_has_option("-fno-semantic-interposition"):
+            vars[var] = sub("-fno-semantic-interposition", "", vars[var])
 
 from distutils.core import setup, Extension