From bd9e16f732a6eb01a033c19f0ccf5fda4d0671f2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Storsj=C3=B6?= <martin@martin.st>
Date: Wed, 9 Feb 2022 12:21:13 +0200
Subject: [PATCH] build-libcxx: Build with -ffunction-sections -fdata-sections

This allows shrinking binaries somewhat, if linking the runtimes
statically and using the -Wl,--gc-sections option.
---
 build-libcxx.sh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/build-libcxx.sh b/build-libcxx.sh
index 27bd323..bd4170b 100755
--- a/build-libcxx.sh
+++ b/build-libcxx.sh
@@ -97,6 +97,8 @@ build_all() {
             -DCMAKE_C_COMPILER=$arch-w64-mingw32-clang \
             -DCMAKE_CXX_COMPILER=$arch-w64-mingw32-clang++ \
             -DCMAKE_CXX_COMPILER_TARGET=$arch-w64-windows-gnu \
+            -DCMAKE_C_FLAGS="-ffunction-sections -fdata-sections" \
+            -DCMAKE_CXX_FLAGS="-ffunction-sections -fdata-sections" \
             -DCMAKE_CROSSCOMPILING=TRUE \
             -DCMAKE_SYSTEM_NAME=Windows \
             -DCMAKE_C_COMPILER_WORKS=TRUE \