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/usr/bin/c89-gcc is in gcc 4:4.9.2-2.

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#! /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 ${1+"$@"}