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bootstrap: don't use cmp's -s option when reading from a pipe

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GNU cmp exits without reading all input when given the -s option,
and that can cause termination of the writing process via SIGPIPE.
Instead, when reading from a pipe, just redirect output to /dev/null
so that all input is read.
This commit is contained in:
Jim Meyering
2008-12-29 20:43:48 +01:00
parent 13601dd3cf
commit cf5616a0aa
1 changed files with 2 additions and 2 deletions
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4
bootstrap
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@@ -198,7 +198,7 @@ insert_sorted_if_absent() {
file=$1
str=$2
test -f $file || touch $file
echo "$str" | sort -u - $file | cmp -s - $file \
echo "$str" | sort -u - $file | cmp - $file > /dev/null \
|| echo "$str" | sort -u - $file -o $file \
|| exit 1
}
@@ -585,7 +585,7 @@ slurp() {
if test $file = Makefile.am; then
copied=$copied${sep}$gnulib_mk; sep=$nl
remove_intl='/^[^#].*\/intl/s/^/#/;'"s!$bt_regex/!!g"
sed "$remove_intl" $1/$dir/$file | cmp -s - $dir/$gnulib_mk || {
sed "$remove_intl" $1/$dir/$file | cmp - $dir/$gnulib_mk > /dev/null || {
echo "$0: Copying $1/$dir/$file to $dir/$gnulib_mk ..." &&
rm -f $dir/$gnulib_mk &&
sed "$remove_intl" $1/$dir/$file >$dir/$gnulib_mk