meson: make cpp invocations cross-compilation friendly

This implementation assumes that the arguments in compiler.cmd_array()
don't contain any spaces. Since we are only interested in compilation
on Linux, I think this is a safe assumption.

Solution suggested by Nirbheek Chauhan.

1 files changed, 2 insertions, 0 deletions

diff --git a/meson.build b/meson.build
index 57e439e733..8c01872a26 100644
--- a/meson.build
+++ b/meson.build
@@ -295,6 +295,8 @@ foreach arg : ['-Wl,-z,relro',
   endif
 endforeach
 
+cpp = ' '.join(cc.cmd_array()) + ' -E'
+
 #####################################################################
 # compilation result tests