support homebrew on macOS.

zlib path => /usr/local/opt/zlib/{lib/include}

diff --git a/src/config-lib.m4 b/src/config-lib.m4
index d29945b..a3e4fbf 100644 (file)
--- a/src/config-lib.m4
+++ b/src/config-lib.m4
@@ -28,7 +28,7 @@ fi
       AC_MSG_ERROR([Can't find ZLIB headers under "$PHP_ZLIB_DIR"])
     fi
   else
-    for i in /usr/local /usr; do
+    for i in /usr/local /usr /usr/local/opt/zlib; do
       if test -f "$i/include/zlib/zlib.h"; then
         PHP_ZLIB_DIR="$i"
         PHP_ZLIB_INCDIR="$i/include/zlib"