From: Orgad Shaneh <orgad.shaneh@audiocodes.com>
Date: Fri, 30 Oct 2020 09:57:35 +0000 (+0200)
Subject: MinGW: Fix static linkage with libgcc and libstdc++ and make it optional (#712)
X-Git-Tag: v4.1~36
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d2eb812ebe8a51085a5d348bbab7ea11725588b8;p=thirdparty%2Fccache.git

MinGW: Fix static linkage with libgcc and libstdc++ and make it optional (#712)

There is no reason to enable it by default. Looks like it was done for
enabling it to run with wine.
---

diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 356444121..2c9ba26f0 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -192,7 +192,7 @@ jobs:
             CC: x86_64-w64-mingw32-gcc-posix
             CXX: x86_64-w64-mingw32-g++-posix
             ENABLE_CACHE_CLEANUP_TESTS: 1
-            CMAKE_PARAMS: -DCMAKE_BUILD_TYPE=CI -DCMAKE_SYSTEM_NAME=Windows -DZSTD_FROM_INTERNET=ON
+            CMAKE_PARAMS: -DCMAKE_BUILD_TYPE=CI -DCMAKE_SYSTEM_NAME=Windows -DZSTD_FROM_INTERNET=ON -DSTATIC_LINK=ON
             RUN_TESTS: unittest-in-wine
             apt_get: elfutils mingw-w64 wine
 
diff --git a/CMakeLists.txt b/CMakeLists.txt
index e756c5789..1b36dc329 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -97,6 +97,10 @@ find_package(zstd 1.1.2 REQUIRED)
 include(CodeAnalysis)
 option(ENABLE_TRACING "Enable possibility to use internal ccache tracing" OFF)
 
+if(WIN32 AND CMAKE_CXX_COMPILER_ID MATCHES "GNU")
+  option(STATIC_LINK "Link statically with system libraries" OFF)
+endif()
+
 #
 # Source code
 #
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 122588703..1d5bf17d6 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -56,9 +56,12 @@ if(WIN32)
   target_link_libraries(ccache_lib PRIVATE ws2_32 "psapi")
 
   if(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
-    target_link_libraries(
-      ccache_lib PRIVATE -static gcc stdc++ winpthread -dynamic)
-  elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+    if(STATIC_LINK)
+      target_link_libraries(ccache_lib PRIVATE -static-libgcc -static-libstdc++ -static winpthread -dynamic)
+    else()
+      target_link_libraries(ccache_lib PRIVATE winpthread)
+    endif()
+  elseif(STATIC_LINK AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
     target_link_libraries(ccache_lib PRIVATE -static c++ -dynamic)
   endif()
 endif()