Hi Tim,

> the command expands to
> 
> if gawk --version | grep GNU >/dev/null 2>&1; then              \
>   (cd . && autoconf --trace AC_CONFIG_FILES:'$1') |     \
>     tr ' ' '\n' |                                               \
>     /usr/bin/sed -ne '/Makefile/{s/\.in$//;p;}' |                       \
>     while read m; do                                            \
>       make -qp -f $m .DUMMY-TARGET 2>/dev/null |                \
>         gawk -v file=$m -e 'BEGIN { RS = "\n\n"; in_rules = 0; } /^#
> Files/ { in_rules = 1; } /\$</ && in_rules && $0 !~ /^(.*\n)*
> \.\w+(\.\w+)?:/ { print "Error: " file ": $< in a non implicit rule\n"

Does the attached patch fix it?

Bruno