Commit f19ab673273b33078904f53c29d1a1d837793213
2023-02-26T07:27:31
* configure: Don't hardcode `grep -E`. TeXLive still supports Solaris 5.10, where the system's `grep` doesn't accept the `-E` option. We thus introduce an `EGREP` variable that is set to either `grep -E` or `-egrep`.
diff --git a/configure b/configure
index 75f8b7b..b30e5d4 100755
--- a/configure
+++ b/configure
@@ -15,10 +15,19 @@
rm -f config.mk builds/unix/unix-def.mk builds/unix/unix-cc.mk
+if test -z "$EGREP"; then
+ if echo a | grep -E '(a|b)' >/dev/null 2>&1; then
+ EGREP="grep -E"
+ else
+ # if grep -E doesn't work, assume egrep does.
+ EGREP=egrep
+ fi
+fi
+
# respect GNUMAKE environment variable for backward compatibility
if test "x$GNUMAKE" = x; then
if test "x$MAKE" = x; then
- if test "x`make -v 2>/dev/null | grep -E 'GNU|makepp'`" = x; then
+ if test "x`make -v 2>/dev/null | $EGREP 'GNU|makepp'`" = x; then
MAKE=gmake
else
MAKE=make
@@ -28,7 +37,7 @@ else
MAKE=$GNUMAKE
fi
-if test "x`$MAKE -v 2>/dev/null | grep -E 'GNU|makepp'`" = x; then
+if test "x`$MAKE -v 2>/dev/null | $EGREP 'GNU|makepp'`" = x; then
echo "GNU make (>= 3.81) or makepp (>= 2.0) is required to build FreeType2." >&2
echo "Please try" >&2
echo >&2