[PATCH] D87418: [LLD] Allow configuring default ld.lld backend

[Mateusz Mikuła via Phabricator via llvm-commits]

mati865 updated this revision to Diff 291055.

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D87418/new/

https://reviews.llvm.org/D87418

Files:
  lld/CMakeLists.txt
  lld/tools/lld/lld.cpp


Index: lld/tools/lld/lld.cpp
===================================================================
--- lld/tools/lld/lld.cpp
+++ lld/tools/lld/lld.cpp
@@ -92,7 +92,8 @@
       continue;
     return isPETargetName(*(it + 1));
   }
-  return false;
+
+  return strcmp(LLD_DEFAULT_LD_LLD_BACKEND, "MINGW") ? false : true;
 }
 
 static Flavor parseProgname(StringRef progname) {
Index: lld/CMakeLists.txt
===================================================================
--- lld/CMakeLists.txt
+++ lld/CMakeLists.txt
@@ -193,6 +193,15 @@
 option(LLD_BUILD_TOOLS
   "Build the lld tools. If OFF, just generate build targets." ON)
 
+set(LLD_DEFAULT_LD_LLD_BACKEND "ELF"
+    CACHE STRING "Default backend for ld.lld, can be either ELF (default) or MINGW")
+string(TOUPPER "${LLD_DEFAULT_LD_LLD_BACKEND}" uppercase_LLD_DEFAULT_LD_LLD_BACKEND)
+if (uppercase_LLD_DEFAULT_LD_LLD_BACKEND MATCHES "^ELF$|^MINGW$")
+  add_definitions("-DLLD_DEFAULT_LD_LLD_BACKEND=\"${uppercase_LLD_DEFAULT_LD_LLD_BACKEND}\"")
+else()
+  message(FATAL_ERROR "LLD_DEFAULT_LD_LLD_BACKEND can only be either ELF or MINGW")
+endif()
+
 if (MSVC)
   add_definitions(-wd4530) # Suppress 'warning C4530: C++ exception handler used, but unwind semantics are not enabled.'
   add_definitions(-wd4062) # Suppress 'warning C4062: enumerator X in switch of enum Y is not handled' from system header.


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