Make deps/llvm.mk USECCACHE-friendly

JuliaLang · Jun 16, 2023 · 1983b8d · 1983b8d
1 parent ba251e8
commit 1983b8d
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/deps/llvm.mk b/deps/llvm.mk
@@ -73,6 +73,15 @@ LLVM_CPPFLAGS :=
 LLVM_LDFLAGS :=
 LLVM_CMAKE :=
 
+ifeq ($(USECCACHE), 1)
+# When USECCACHE is set to 1 we can't use `CC` and `CXX` as compilers because they include
+# `ccache` at the beginning and CMake would think that's the actual compiler, but we can use
+# `CC_ARG`/`CXX_ARG` in their place.
+LLVM_CMAKE += -DCMAKE_C_COMPILER_LAUNCHER=ccache
+LLVM_CMAKE += -DCMAKE_C_COMPILER="$(CC_ARG)"
+LLVM_CMAKE += -DCMAKE_CXX_COMPILER_LAUNCHER=ccache
+LLVM_CMAKE += -DCMAKE_CXX_COMPILER="$(CXX_ARG)"
+endif
 LLVM_CMAKE += -DLLVM_ENABLE_PROJECTS="$(LLVM_ENABLE_PROJECTS)"
 LLVM_CMAKE += -DLLVM_EXTERNAL_PROJECTS="$(LLVM_EXTERNAL_PROJECTS)"
 LLVM_CMAKE += -DLLVM_ENABLE_RUNTIMES="$(LLVM_ENABLE_RUNTIMES)"