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This patch enables ENABLE_SHARED=1 to build DLL based LLVM toolchain on MingW & Cygwin.

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Patch by Takumi Nakamura!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111268 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov
2010-08-17 19:03:03 +00:00
parent c5ed0134a7
commit 59a430f68f
2 changed files with 117 additions and 17 deletions
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52
tools/llvm-shlib/Makefile
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@@ -15,6 +15,17 @@ NO_BUILD_ARCHIVE = 1
LINK_LIBS_IN_SHARED = 1
SHARED_LIBRARY = 1
include $(LEVEL)/Makefile.config
ifeq ($(HOST_OS), $(filter $(HOST_OS), Cygwin MingW))
EXPORTED_SYMBOL_FILE = $(ObjDir)/$(LIBRARYNAME).exports
# It is needed to force static-stdc++.a linked.
# FIXME: It should be omitted when configure detects system's stdc++.dll.
SHLIB_FRAG_NAMES += stdc++.a.o
endif
include $(LEVEL)/Makefile.common
# Include all archives in libLLVM.(so|dylib) except the ones that have
@@ -57,3 +68,44 @@ ifeq ($(HOST_OS), Linux)
# Don't allow unresolved symbols.
LLVMLibsOptions += -Wl,--no-undefined
endif
ifeq ($(HOST_OS), $(filter $(HOST_OS), Cygwin MingW))
SHLIB_STUBS := $(addprefix $(ObjDir)/, $(SHLIB_FRAG_NAMES))
SHLIB_FRAGS := $(patsubst %.a.o, $(ObjDir)/%.syms.txt, $(LIBRARYNAME).a.o $(SHLIB_FRAG_NAMES))
LLVMLibsOptions := $(SHLIB_STUBS) $(LLVMLibsOptions)
$(LibName.SO): $(SHLIB_STUBS)
%.syms.txt: %.a.o
$(Echo) Collecting global symbols of $(notdir $*)
$(Verb) $(NM_PATH) -g $< > $@
$(ObjDir)/$(LIBRARYNAME).exports: $(SHLIB_FRAGS) $(ObjDir)/.dir
$(Echo) Generating exports for $(LIBRARYNAME)
$(Verb) ($(SED) -n \
-e "s/^.* T _\([^.][^.]*\)$$/\1/p" \
-e "s/^.* [BDR] _\([^.][^.]*\)$$/\1 DATA/p" \
$(SHLIB_FRAGS) \
| sort -u) > $@
$(ObjDir)/$(LIBRARYNAME).a.o: $(LLVMLibsPaths) $(ObjDir)/.dir
$(Echo) Linking all LLVMLibs together for $(LIBRARYNAME)
$(Verb) $(Link) -nostartfiles -Wl,-r -nodefaultlibs -o $@ \
-Wl,--whole-archive $(LLVMLibsPaths) \
-Wl,--no-whole-archive
$(ObjDir)/stdc++.a.o: $(ObjDir)/.dir
$(Echo) Linking all libs together for static libstdc++.a
$(Verb) $(Link) -nostartfiles -Wl,-r -nodefaultlibs -o $@ \
-Wl,--whole-archive -lstdc++ \
-Wl,--no-whole-archive
# FIXME: workaround to invalidate -lstdc++
$(Echo) Making dummy -lstdc++ to lib
$(Verb) $(AR) rc $(ToolDir)/libstdc++.dll.a
# FIXME: Is install-local needed?
clean-local::
$(Verb) $(RM) -f $(ToolDir)/libstdc++.dll.a
endif