ruby: Build with -Os instead of -Oz (see #1520)

When building ruby with clang and -Oz it segmentation faults on
32-bit arm, so use -Os there instead.

diff --git a/build-package.sh b/build-package.sh
index 7487f4c..0d7b6eb 100755 (executable)
--- a/build-package.sh
+++ b/build-package.sh
@@ -571,7 +571,9 @@ termux_step_setup_toolchain() {
        if [ -n "$TERMUX_DEBUG" ]; then
                CFLAGS+=" -g3 -O1 -fstack-protector --param ssp-buffer-size=4 -D_FORTIFY_SOURCE=2"
        else
-               if [ "$TERMUX_PKG_CLANG" = "no" ]; then
+               if [ "$TERMUX_PKG_CLANG" = "no" ] || [ "$TERMUX_PKG_NAME" = "ruby" -a "$TERMUX_ARCH" = arm ]; then
+                       # The exception for "ruby" and arm exception is to avoid -Oz for ruby, which causes
+                       # segmentation fault on 32-bit arm with NDK r15c and ruby 2.4.2 (#1520).
                        CFLAGS+=" -Os"
                else
                        # -Oz seems good for clang, see https://github.com/android-ndk/ndk/issues/133