From: Paul Eggert <eggert@cs.ucla.edu>
Date: Sun, 3 Dec 2023 05:50:45 +0000 (-0800)
Subject: Simplify recent $PERL check
X-Git-Tag: v1.16i~7
X-Git-Url: http://git.ipfire.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=668e8a20e3561063ee7478e91c9f81bb40cfed7a;p=thirdparty%2Fautomake.git

Simplify recent $PERL check

* configure.ac: Don’t spin off subprocesses to check $PERL.
---

diff --git a/configure.ac b/configure.ac
index 946fecb67..5cda80a18 100644
--- a/configure.ac
+++ b/configure.ac
@@ -68,13 +68,16 @@ AUTOMAKE="\"`pwd`/pre-inst-env\" automake-$APIVERSION"
 AC_PROG_LN_S
 
 AC_PATH_PROG([PERL], [perl])
-if test -z "$PERL"; then
+case $PERL in
+ '')
    AC_MSG_ERROR([perl not found])
-elif echo "$PERL" | grep '[ 	]' >/dev/null; then
+   ;;
+ *' '* | *'	'*)
   AC_MSG_ERROR([The path to your Perl contains spaces or tabs.
 This would cause build failures later or unusable programs.
 Please use a path without spaces and try again.])
-fi
+  ;;
+esac
 
 # Save details about the selected perl interpreter in config.log.
 AM_RUN_LOG([$PERL --version])