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author | Jim Meyering <jim@meyering.net> | 1998-02-06 12:36:04 +0000 |
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committer | Jim Meyering <jim@meyering.net> | 1998-02-06 12:36:04 +0000 |
commit | 4da3feb0e90b26ce4acf23c0eec5194d00b9a564 (patch) | |
tree | bdd2cdaec16fdd326cb7a42a7ce9005c3f9bfa7c /m4/perl.m4 | |
parent | a3d39ceb13b3eb713f11ae609a87e59aeadd4336 (diff) | |
download | coreutils-4da3feb0e90b26ce4acf23c0eec5194d00b9a564.tar.xz |
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Diffstat (limited to 'm4/perl.m4')
-rw-r--r-- | m4/perl.m4 | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/m4/perl.m4 b/m4/perl.m4 new file mode 100644 index 000000000..0cc681ccd --- /dev/null +++ b/m4/perl.m4 @@ -0,0 +1,39 @@ +#serial 1 + +dnl From Jim Meyering. +dnl Find a new-enough version of Perl. +dnl + +AC_DEFUN(jm_PERL, +[ + dnl FIXME: don't hard-code 5.003 + dnl FIXME: should we cache the result? + AC_MSG_CHECKING([for perl5.003 or newer]) + if test "${PERL+set}" = set; then + # `PERL' is set in the user's environment. + candidate_perl_names="$PERL" + perl_specified=yes + else + candidate_perl_names='perl perl5' + perl_specified=no + fi + + found=no + AC_SUBST(PERL) + PERL="$missing_dir/missing perl" + for perl in $candidate_perl_names; do + # Run test in a subshell; some versions of sh will print an error if + # an executable is not found, even if stderr is redirected. + if ( $perl -e 'require 5.003' ) > /dev/null 2>&1; then + PERL=$perl + found=yes + break + fi + done + + AC_MSG_RESULT($found) + test $found = no && AC_MSG_WARN([ +*** You don't seem to have perl5.003 or newer installed. +*** Because of that, you may be unable to regenerate certain files +*** if you modify the sources from which they are derived.] ) +]) |