fix up exists etc deparsing

[perl5.git] / runtests.SH

diff --git a/runtests.SH b/runtests.SH
index 304b719..71f41d1 100755 (executable)
--- a/runtests.SH
+++ b/runtests.SH
@@ -16,21 +16,41 @@ case "$0" in
 esac
 echo "Extracting runtests (with variable substitutions)"
 rm -f runtests
+
 $spitshell >runtests <<!GROK!THIS!
 $startsh -e
 # runtests.SH
 # 
+!GROK!THIS!
+
+## In the following, dollars and backticks do not need the extra backslash.
+$spitshell >>runtests <<'!NO!SUBS!'
+
+export PATH || (echo "OOPS, this isn't sh.  Desperation time.  I will feed myself to sh."; sh $0; kill $$)
+
+# Avoid "warning: jobserver unavailable: using -j1." warnings under GNU make.
+# When gmake -j N spawns a child, it passes
+#    MAKEFLAGS=" --jobserver-fds=3,4 -j".
+# in the environment.  Also, if make recognises that the child is another
+# make (e.g. it's invoked as $(MAKE) or +command), it keeps open fd's 3
+# and 4 to allow the child process to access the job server. Otherwise,
+# those fd's aren't kept open.
+# In the case where one does 'make -j 16 test_harness', this script is
+# called with MAKEFLAGS set, but fd's 3 and 4 closed. Later when
+# descendents of this script run cpan/ExtUtils-Constant/t/Constant.t
+# which itelf invokes make, the warnings ensue.
 
-export PATH || (echo "OOPS, this isn't sh.  Desperation time.  I will feed myself to sh."; sh \$0; kill \$\$)
+unset MAKEFLAGS
 
-case \$# in
+
+case $# in
     0)
        echo "runtests tty_flag ..."
        exit 1
        ;;
 esac
 
-case \$1 in
+case $1 in
     tty)
        tty=Y
        ;;
@@ -50,12 +70,25 @@ case \$1 in
        ;;
 esac
 
-if test X"\$TESTFILE" = X; then
+if test X"$TESTFILE" = X; then
     TESTFILE=TEST
 fi
 
 cd t
 
+# If this is run under an old shell that doesn't automatically 
+# update PWD, then we must update it.  Otherwise, t/io/fs.t gets 
+# mixed up about what directory we are in.
+case "$PWD" in
+    '')  ;; # Do nothing if it isn't set at all.
+    */t) ;; # Leave it alone if it's properly updated.
+    *) PWD=${PWD}/t; export PWD ;;  # Otherwise, fix it.
+esac
+
+!NO!SUBS!
+
+## In the following, dollars and backticks do need the extra backslash.
+$spitshell >>runtests <<!GROK!THIS!
 # The second branch is for testing without a tty or controlling terminal,
 # see t/op/stat.t
 if test \$tty = Y; then