From 72a081c61775deb06034f5b7e922f7e6246178af Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?L=C3=A9o=20Lam?= <leo@leolam.fr>
Date: Sun, 30 Jun 2019 13:29:52 +0200
Subject: [PATCH] CMake: Create thin archives on Linux

This significantly reduces unnecessary disk writes and space usage
when building Citra.

libcore.a is now only ~1MB rather than several hundred megabytes.
---
 src/CMakeLists.txt | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 663a9493f..4a4c39f17 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -80,6 +80,15 @@ else()
             add_compile_options("-static")
         endif()
     endif()
+
+    if(CMAKE_SYSTEM_NAME STREQUAL "Linux" OR MINGW)
+        # GNU ar: Create thin archive files.
+        # Requires binutils-2.19 or later.
+        set(CMAKE_C_ARCHIVE_CREATE   "<CMAKE_AR> qcTP <TARGET> <LINK_FLAGS> <OBJECTS>")
+        set(CMAKE_C_ARCHIVE_APPEND   "<CMAKE_AR> qTP  <TARGET> <LINK_FLAGS> <OBJECTS>")
+        set(CMAKE_CXX_ARCHIVE_CREATE "<CMAKE_AR> qcTP <TARGET> <LINK_FLAGS> <OBJECTS>")
+        set(CMAKE_CXX_ARCHIVE_APPEND "<CMAKE_AR> qTP  <TARGET> <LINK_FLAGS> <OBJECTS>")
+    endif()
 endif()
 
 add_subdirectory(common)