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#!/bin/sh
set -ex
if [ -z "$CC" ]; then
CC="gcc"
fi
SRCLANG=c
MACROLIST=macro-list.txt
CCDEFS=cc-definitions.txt
CLANGDEFS=clang-definitions.txt
# Gather list of macros as "NAME" = NAME.
$CC -dM -E -x $SRCLANG /dev/null -o - | \
grep "#define" | sort -f | sed -e "s/#define \([^ ]*\) .*/\"\1\" = \1/" > $MACROLIST
$CC -E -x $SRCLANG $MACROLIST > $CCDEFS
clang -E -x $SRCLANG $MACROLIST > $CLANGDEFS
diff $CCDEFS $CLANGDEFS
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