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Convert shared build of LLVM OpenMP to in-tree #1558

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Convert shared build of LLVM OpenMP to in-tree #1558

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28 changes: 6 additions & 22 deletions Makefile.in
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Original file line number Diff line number Diff line change
Expand Up @@ -80,6 +80,8 @@ EXTRA_MULTILIB_TEST := @extra_multilib_test@
XLEN := $(shell echo $(WITH_ARCH) | tr A-Z a-z | sed 's/.*rv\([0-9]*\).*/\1/')
ifneq ($(XLEN),32)
XLEN := 64
LLVM_OPENMP := openmp
LLVM_OPENMP_CMAKE_FLAGS := -DRUNTIMES_CMAKE_ARGS="-DLIBOMP_OMPD_SUPPORT=OFF;-DLIBOMP_ARCHER_SUPPORT=OFF;-DOPENMP_ENABLE_LIBOMPTARGET=OFF"
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Should we turn off these for static build as well?

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We disable LIBOMPTARGGET already. Archer and OMPD are related to debugging, if out of tree build locates them it might be one more argument in favor of that 😄

endif

make_tuple = riscv$(1)-unknown-$(2)
Expand Down Expand Up @@ -1148,36 +1150,18 @@ stamps/build-llvm-linux: $(LLVM_SRCDIR) $(LLVM_SRC_GIT) $(BINUTILS_SRCDIR) $(BIN
-DCMAKE_BUILD_TYPE=Release \
-DLLVM_TARGETS_TO_BUILD="RISCV" \
-DLLVM_ENABLE_PROJECTS="clang;lld" \
-DLLVM_ENABLE_RUNTIMES="compiler-rt;libcxx;libcxxabi;libunwind" \
-DLLVM_ENABLE_RUNTIMES="compiler-rt;libcxx;libcxxabi;libunwind;$(LLVM_OPENMP)" \
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If LLVM_OPENMP is empty, the build system of LLVM will complain Runtime "" is not a supported runtime..

$(LLVM_OPENMP_CMAKE_FLAGS) \
-DLLVM_DEFAULT_TARGET_TRIPLE="$(LINUX_TUPLE)" \
-DDEFAULT_SYSROOT="../sysroot" \
-DLLVM_RUNTIME_TARGETS=$(call make_tuple,$(XLEN),linux-gnu) \
-DLLVM_RUNTIME_TARGETS=default \
-DLLVM_INSTALL_TOOLCHAIN_ONLY=On \
-DLLVM_BINUTILS_INCDIR=$(BINUTILS_SRCDIR)/include \
-DLLVM_PARALLEL_LINK_JOBS=4
$(MAKE) -C $(notdir $@)
$(MAKE) -C $(notdir $@) install
# Build shared/static OpenMP libraries on RV64.
# Build static OpenMP libraries on RV64.
if test $(XLEN) -eq 64; then \
mkdir $(notdir $@)/openmp-shared; \
cmake -S$(LLVM_SRCDIR)/openmp \
-B$(notdir $@)/openmp-shared \
-DCMAKE_INSTALL_PREFIX=$(SYSROOT) \
-DCMAKE_C_COMPILER=$(INSTALL_DIR)/bin/clang \
-DCMAKE_CXX_COMPILER=$(INSTALL_DIR)/bin/clang++ \
-DOPENMP_ENABLE_LIBOMPTARGET=Off \
-DCMAKE_BUILD_TYPE=Release \
-DLIBOMP_ARCH=riscv64 \
-DLIBOMP_HAVE_WARN_SHARED_TEXTREL_FLAG=On \
-DLIBOMP_HAVE_AS_NEEDED_FLAG=On \
-DLIBOMP_HAVE_VERSION_SCRIPT_FLAG=On \
-DLIBOMP_HAVE_STATIC_LIBGCC_FLAG=On \
-DLIBOMP_HAVE_Z_NOEXECSTACK_FLAG=On \
-DDISABLE_OMPD_GDB_PLUGIN=On \
-DLIBOMP_OMPD_GDB_SUPPORT=Off \
-DLIBOMP_ENABLE_SHARED=On; \
$(MAKE) -C $(notdir $@)/openmp-shared; \
$(MAKE) -C $(notdir $@)/openmp-shared install; \
mkdir $(notdir $@)/openmp-static; \
cmake -S$(LLVM_SRCDIR)/openmp \
-B$(notdir $@)/openmp-static \
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