meson: link to libm if available
This isn't necessary with more recent versions of GCC and clang
since we use the builtin versions instead, but for very old compilers
(like GCC < 4.4) we may need it.
@@ -62,6 +62,8 @@ if not c_openmp_simd
simde_deps += dependency('openmp', required: false)
endif
+simde_deps += cc.find_library('m', required: false)
+
simde_include_dir = include_directories('..')
subdir('common')
