没有libclang.a成功构建后为iOS？

Question

我为3.7版提取了正式的llvm/clang源代码，做了一些小补丁(NSGetEnviron())，用cmake为iOS进行了配置和构建：

cmake ../llvm_37_ios \
 -DCMAKE_INSTALL_PREFIX=/Volumes/Transcend/dev/src/llvm_37_ios_armv7_installed \
 -DLLVM_ENABLE_TERMINFO=OFF \
 -DLLVM_ENABLE_THREADS=OFF \
 -DCMAKE_OSX_SYSROOT=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk \
 -DCMAKE_C_FLAGS="-stdlib=libc++ -arch armv7 -mios-version-min=8.0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk" \
 -DCMAKE_CXX_FLAGS="-stdlib=libc++ -arch armv7 -mios-version-min=8.0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk" \
 -DCMAKE_CROSSCOMPILING=True \
 -DLLVM_TABLEGEN=/Volumes/Transcend/dev/src/llvm_37_local_build/bin/llvm-tblgen \
 -DCLANG_TABLEGEN=/Volumes/Transcend/dev/src/llvm_37_local_build/bin/clang-tblgen \
 -DCMAKE_BUILD_TYPE=Release \
 -DLLVM_TARGETS_TO_BUILD="ARM;X86"

然而，我没有找到libclang.a，而是找到了另一个libclang*.a库：

MBA-Anton:llvm_37_ios_armv7_build asmirnov$ find . -name "libclang.a"
MBA-Anton:llvm_37_ios_armv7_build asmirnov$ find . -name "libclang*.a"
./lib/libclangBasic.a
./lib/libclangLex.a
./lib/libclangASTMatchers.a
./lib/libclangParse.a
./lib/libclangDynamicASTMatchers.a
./lib/libclangAnalysis.a
./lib/libclangEdit.a
./lib/libclangRewrite.a
./lib/libclangAST.a
./lib/libclangDriver.a
./lib/libclangCodeGen.a
./lib/libclangSerialization.a
./lib/libclangRewriteFrontend.a
./lib/libclangSema.a
./lib/libclangFrontendTool.a
./lib/libclangARCMigrate.a
./lib/libclangToolingCore.a
./lib/libclangFrontend.a
./lib/libclangIndex.a
./lib/libclangTooling.a
./lib/libclangFormat.a
./lib/libclangStaticAnalyzerFrontend.a
./lib/libclangStaticAnalyzerCore.a
./lib/libclangStaticAnalyzerCheckers.a

由于某种原因，创建了共享库，但没有创建静态库：

Linking CXX executable ../../../../bin/clang
[ 98%] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/CIndexDiagnostic.cpp.o
[ 98%] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/CIndexHigh.cpp.o
[ 98%] Built target clang
[ 98%] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/CIndexInclusionStack.cpp.o
[ 98%] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/CIndexUSRs.cpp.o
[ 98%] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/CIndexer.cpp.o
[ 98%] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/CXComment.cpp.o
[ 98%] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/CXCursor.cpp.o
[ 98%] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/CXCompilationDatabase.cpp.o
[ 98%] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/CXLoadedDiagnostic.cpp.o
[100%] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/CXSourceLocation.cpp.o
[100%] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/CXStoredDiagnostic.cpp.o
[100%] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/CXString.cpp.o
[100%] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/CXType.cpp.o
[100%] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/IndexBody.cpp.o
[100%] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/IndexDecl.cpp.o
[100%] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/IndexTypeSourceInfo.cpp.o
[100%] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/Indexing.cpp.o
[100%] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/IndexingContext.cpp.o
Linking CXX shared library ../../../../lib/libclang.dylib
[100%] Built target libclang

是我错过了什么，还是它是clang配置错误？

Answer 1

默认情况下，libclang是作为共享库构建的，因为它简化了使用费伊或类似机制的其他语言(如Python )的使用。

要构建静态库，请使用在LIBCLANG_BUILD_STATIC中定义的CMake选项

option(LIBCLANG_BUILD_STATIC
  "Build libclang as a static library (in addition to a shared one)" OFF)

您可以使用它如下：

cmake -DLIBCLANG_BUILD_STATIC=ON ...