Revert r351833 and r352250.

They were breaking the Windows build when using MSBuild, see the
discussion on D56781.

r351833: "Use response file when generating LLVM-C.dll"

> Use response file when generating LLVM-C.dll
>
> As discovered in D56774 the command line gets to long, so use a response file to give the script the libs. This change has been tested and is confirmed working for me.
>
> Commited on behalf of Jakob Bornecrantz
>
> Differential Revision: https://reviews.llvm.org/D56781

r352250: "Build LLVM-C.dll by default on windows and enable in release package"

>  Build LLVM-C.dll by default on windows and enable in release package
>
>  With the fixes to the building of LLVM-C.dll in D56781 this should now
>  be safe to land. This will greatly simplify dealing with LLVM for people
>  that just want to use the C API on windows. This is a follow up from
>  D35077.
>
>  Patch by Jakob Bornecrantz!
>
>  Differential revision: https://reviews.llvm.org/D56774

llvm-svn: 352492

Author: zmodem

llvm/CMakeLists.txt

@@ -534,7 +534,7 @@ if(NOT DEFINED LLVM_DYLIB_COMPONENTS)
 endif()
 option(LLVM_LINK_LLVM_DYLIB "Link tools against the libllvm dynamic library" OFF)
 if(MSVC)
-  option(LLVM_BUILD_LLVM_C_DYLIB "Build LLVM-C.dll (Windows only)" ON)
+  option(LLVM_BUILD_LLVM_C_DYLIB "Build LLVM-C.dll (Windows only)" OFF)
 else()
   option(LLVM_BUILD_LLVM_C_DYLIB "Build libllvm-c re-export library (Darwin only)" OFF)
 endif()

llvm/tools/llvm-shlib/CMakeLists.txt

@@ -137,20 +137,13 @@ if(MSVC)
     list(APPEND FULL_LIB_NAMES ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib/${lib}.lib)
   endforeach()
 
-  # Need to seperate lib names with newlines.
-  string(REPLACE ";" "\n" FILE_CONTENT "${FULL_LIB_NAMES}")
-
-  # Write out the full lib names into file to be read by the python script.
-  set(LIBSFILE ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/libllvm-c.args)
-  file(WRITE ${LIBSFILE} "${FILE_CONTENT}")
-
   # Generate the exports file dynamically.
   set(GEN_SCRIPT ${CMAKE_CURRENT_SOURCE_DIR}/gen-msvc-exports.py)
 
   set(LLVM_EXPORTED_SYMBOL_FILE ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/libllvm-c.exports)
 
   add_custom_command(OUTPUT ${LLVM_EXPORTED_SYMBOL_FILE}
-    COMMAND ${PYTHON_EXECUTABLE} ${GEN_SCRIPT} --libsfile ${LIBSFILE} ${GEN_UNDERSCORE} --nm ${LLVM_TOOLS_BINARY_DIR}/llvm-nm -o ${LLVM_EXPORTED_SYMBOL_FILE}
+    COMMAND ${PYTHON_EXECUTABLE} ${GEN_SCRIPT} ${FULL_LIB_NAMES} ${GEN_UNDERSCORE} --nm ${LLVM_TOOLS_BINARY_DIR}/llvm-nm -o ${LLVM_EXPORTED_SYMBOL_FILE}
     DEPENDS ${LIB_NAMES} llvm-nm
     COMMENT "Generating export list for LLVM-C"
     VERBATIM )

llvm/tools/llvm-shlib/gen-msvc-exports.py

@@ -82,10 +82,6 @@ def gen_llvm_c_export(output, underscore, libs, nm):
 def main():
     parser = argparse.ArgumentParser('gen-msvc-exports')
 
-    parser.add_argument(
-        '-i', '--libsfile', help='file with list of libs, new line separated',
-        action='store', default=None
-    )
     parser.add_argument(
         '-o', '--output', help='output filename', default='LLVM-C.exports'
     )
@@ -97,19 +93,12 @@ def main():
         '--nm', help='path to the llvm-nm executable', default='llvm-nm'
     )
     parser.add_argument(
-        'libs', metavar='LIBS', nargs='*', help='list of libraries to generate export from'
+        'libs', metavar='LIBS', nargs='+', help='list of libraries to generate export from'
     )
 
     ns = parser.parse_args()
 
-    libs = ns.libs
-
-    # Add if we where given a libsfile add it to the libs.
-    if ns.libsfile:
-        with open(ns.libsfile) as f:
-            libs.extend(f.read().splitlines())
-
-    gen_llvm_c_export(ns.output, ns.underscore, libs, ns.nm)
+    gen_llvm_c_export(ns.output, ns.underscore, ns.libs, ns.nm)
 
 
 if __name__ == '__main__':

llvm/utils/release/build_llvm_package.bat

@@ -52,17 +52,7 @@ svn.exe export -r %revision% http://llvm.org/svn/llvm-project/lldb/%branch% llvm
 
 
 REM Setting CMAKE_CL_SHOWINCLUDES_PREFIX to work around PR27226.
-set cmake_flags=^
-	-DCMAKE_BUILD_TYPE=Release ^
-	-DLLVM_ENABLE_ASSERTIONS=ON ^
-	-DLLVM_INSTALL_TOOLCHAIN_ONLY=ON ^
-	-DLLVM_BUILD_LLVM_C_DYLIB=ON ^
-	-DCMAKE_INSTALL_UCRT_LIBRARIES=ON ^
-	-DCLANG_FORMAT_VS_VERSION=%clang_format_vs_version% ^
-	-DPACKAGE_VERSION=%package_version% ^
-	-DLLDB_RELOCATABLE_PYTHON=1 ^
-	-DLLDB_TEST_COMPILER=%cd%\build32_stage0\bin\clang.exe ^
-	-DCMAKE_CL_SHOWINCLUDES_PREFIX="Note: including file: "
+set cmake_flags=-DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_ASSERTIONS=ON -DLLVM_INSTALL_TOOLCHAIN_ONLY=ON -DCMAKE_INSTALL_UCRT_LIBRARIES=ON -DCLANG_FORMAT_VS_VERSION=%clang_format_vs_version% -DPACKAGE_VERSION=%package_version% -DLLDB_RELOCATABLE_PYTHON=1 -DLLDB_TEST_COMPILER=%cd%\build32_stage0\bin\clang.exe -DCMAKE_CL_SHOWINCLUDES_PREFIX="Note: including file: "
 
 REM TODO: Run the "check-all" tests.