configure: avoid "test -e"

"test -e" is POSIX but clearly was not supported by the SunOS sh
version, -f is supported and should be a decent equivalent

Bug: http://curl.haxx.se/bug/view.cgi?id=3371574

diff --git a/configure.ac b/configure.ac
index b5adde5..b1fbf3e 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1330,7 +1330,7 @@ if test X"$OPT_SSL" != Xno; then
     dnl the user told us to look
     OPENSSL_PCDIR="$OPT_SSL/lib/pkgconfig"
     AC_MSG_NOTICE([PKG_CONFIG_LIBDIR will be set to "$OPENSSL_PCDIR"])
-    if test -e "$OPENSSL_PCDIR/openssl.pc"; then
+    if test -f "$OPENSSL_PCDIR/openssl.pc"; then
       PKGTEST="yes"
     fi