/usr/bin/c89-gcc is in gcc 4:4.7.2-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | #! /bin/sh
# Call the appropriate C compiler with options to accept ANSI/ISO C
# The following options are the same (as of gcc-2.95):
# -ansi
# -std=c89
# -std=iso9899:1990
extra_flag=-std=c89
for i; do
case "$i" in
-ansi|-std=c89|-std=iso9899:1990)
extra_flag=
;;
-std=*)
echo >&2 "`basename $0` called with non ANSI/ISO C option $i"
exit 1
;;
esac
done
exec gcc $extra_flag ${1+"$@"}
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