tree 98489b2cba06382c782c3a5d607c796e88fe10ed
parent 46d3ab3c49e0ecf9bb389619e6d01e54c27c3279
author Chris Kay <chris.kay@arm.com> 1705344307 +0000
committer Chris Kay <chris.kay@arm.com> 1705586283 +0000

build: always use the C compiler to preprocess

We're a bit inconsistent about which tool we use to preprocess source
files; in some places we use `$(CC) -E` whilst in others we use `cpp`.

This change forces all invocations of the C preprocessor to use the
first scheme, which ensures that the preprocessor behaves the same way
as the C compiler used when compiling C source files.

Change-Id: Iede2f25ff86ea8b43d7a523e32648058d5023832
Signed-off-by: Chris Kay <chris.kay@arm.com>