don't export symbols via regular make

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numba · Jun 14, 2021 · e1f251d · e1f251d
1 parent 5812318
commit e1f251d
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Showing 2 changed files with 11 additions and 1 deletion.
diff --git a/ffi/Makefile.linux b/ffi/Makefile.linux
@@ -5,6 +5,8 @@ CXX ?= g++
 CXX_FLTO_FLAGS ?= -flto
 LD_FLTO_FLAGS ?= -flto -Wl,--exclude-libs=ALL
 
+# don't export LLVM symbols
+
 CXXFLAGS := $(CPPFLAGS) $(CXXFLAGS) $(LLVM_CXXFLAGS) $(CXX_FLTO_FLAGS)
 LDFLAGS := $(LDFLAGS) $(LLVM_LDFLAGS) $(LD_FLTO_FLAGS)
 LIBS = $(LLVM_LIBS)

diff --git a/ffi/build.py b/ffi/build.py
@@ -193,7 +193,15 @@ def main_posix(kind, library_ext):
     os.environ['LLVM_CXXFLAGS'] = ' '.join(cxxflags)
 
     ldflags = run_llvm_config(llvm_config, ["--ldflags"])
-    os.environ['LLVM_LDFLAGS'] = ldflags.strip()
+    os.environ['LLVM_LDFLAGS'] = " ".join((ldflags.strip(),
+     # Grab Don't export LLVM symbols
+     "-Wl,-unexported_symbol,__ZTVN4llvm*",
+     "-Wl,-unexported_symbol,__ZNK4llvm*",
+     "-Wl,-unexported_symbol,__ZN4llvm*",
+     "-Wl,-unexported_symbol,__ZTIN4llvm*",
+     "-Wl,-unexported_symbol,_LLVM*",
+     "-Wl,-unexported_symbol,__ZTSN4llvm*"))
+
     # static link libstdc++ for portability
     if int(os.environ.get('LLVMLITE_CXX_STATIC_LINK', 0)):
         os.environ['CXX_STATIC_LINK'] = "-static-libstdc++"