Merge pull request #1747 from unvermuthet/linux-use-static-cpp

Implement `use_static_cpp` flag for Linux

Author: dsnopek

cmake/linux.cmake

@@ -14,11 +14,25 @@ function(linux_options)
  Not implemented as compiler selection is managed by CMake. Look to
  doc/cmake.rst for examples.
  ]]
+ option(GODOTCPP_USE_STATIC_CPP "Link libgcc and libstdc++ statically for better portability" ON)
 endfunction()
 
 #[===========================[ Target Generation ]===========================]
 function(linux_generate)
+ set(STATIC_CPP "$<BOOL:${GODOTCPP_USE_STATIC_CPP}>")
+
  target_compile_definitions(godot-cpp PUBLIC LINUX_ENABLED UNIX_ENABLED)
 
+ # gersemi: off
+ target_link_options(
+ godot-cpp
+ PUBLIC
+ $<${STATIC_CPP}:
+ -static-libgcc
+ -static-libstdc++
+ >
+ )
+ # gersemi: on
+
  common_compiler_flags()
 endfunction()

tools/linux.py

@@ -5,6 +5,7 @@
 
 def options(opts):
  opts.Add(BoolVariable("use_llvm", "Use the LLVM compiler - only effective when targeting Linux", False))
+ opts.Add(BoolVariable("use_static_cpp", "Link libgcc and libstdc++ statically for better portability", True))
 
 
 def exists(env):
@@ -37,6 +38,10 @@ def generate(env):
  env.Append(CCFLAGS=["-march=rv64gc"])
  env.Append(LINKFLAGS=["-march=rv64gc"])
 
+ # Link statically for portability
+ if env["use_static_cpp"]:
+ env.Append(LINKFLAGS=["-static-libgcc", "-static-libstdc++"])
+
  env.Append(CPPDEFINES=["LINUX_ENABLED", "UNIX_ENABLED"])
 
  # Refer to https://github.com/godotengine/godot/blob/master/platform/linuxbsd/detect.py