Fix the builds with LLVM_TOOL_LLVM_DRIVER_BUILD enabled.
LLVM_ENABLE_EXPORTED_SYMBOLS_IN_EXECUTABLES is not completely
compatible with export_executable_symbols as the later will be ignored
if the previous is set to NO.
Fix the issue by passing if symbols need to be exported to
llvm_add_exectuable so the link flag can be determined directly
without calling export_executable_symbols_* later.
`LLVM_ENABLE_EXPORTED_SYMBOLS_IN_EXECUTABLES` is not completely
compatible with `export_executable_symbols` as the later will be ignored
if the previous is set to NO.
Fix the issue by passing if symbols need to be exported to
`llvm_add_exectuable` so the link flag can be determined directly
without calling `export_executable_symbols_*` later.
/Users/jiefu/llvm-project/llvm/examples/OrcV2Examples/OrcV2CBindingsBasicUsage/OrcV2CBindingsBasicUsage.c:77:52: error: cast from 'char **' to 'const char **' must have all intermediate pointers const qualified to be safe [-Werror,-Wcast-qual]
LLVMParseCommandLineOptions(argc, (const char **)argv, "");
^
/Users/jiefu/llvm-project/llvm/examples/OrcV2Examples/OrcV2CBindingsAddObjectFile/OrcV2CBindingsAddObjectFile.c:63:52: error: cast from 'char **' to 'const char **' must have all intermediate pointers const qualified to be safe [-Werror,-Wcast-qual]
LLVMParseCommandLineOptions(argc, (const char **)argv, "");
^
/Users/jiefu/llvm-project/llvm/examples/OrcV2Examples/OrcV2CBindingsDumpObjects/OrcV2CBindingsDumpObjects.c:62:52: error: cast from 'char **' to 'const char **' must have all intermediate pointers const qualified to be safe [-Werror,-Wcast-qual]
LLVMParseCommandLineOptions(argc, (const char **)argv, "");
^
...
This reapplies 85c649bc02a, which was reverted in 35767e43d62 due to failures
with some example programs. The fix was to add export_executable_symbols to the
example programs.
This patch breaks Orc.h up into Orc.h, LLJIT.h and OrcEE.h.
Orc.h contain core Orc utilities.
LLJIT.h contains LLJIT specific types and functions.
OrcEE.h contains types and functions that depend on ExecutionEngine.
The intent is that these headers should match future library divisions: Clients
who only use Orc.h should only need to link againt the Orc core libraries,
clients using LLJIT.h will also need to link against LLVM core, and clients
using OrcEE.h will also have to link against ExecutionEngine.
In addition to breaking up the Orc.h header this patch introduces functions to:
(1) Set the object linking layer creation function on LLJITBuilder.
(2) Create an RTDyldObjectLinkingLayer instance (particularly for use in (1)).
(3) Register JITEventListeners with an RTDyldObjectLinkingLayer.
Together (1), (2) and (3) can be used to force use of RTDyldObjectLinkingLayer
as the underlying JIT linker for LLJIT, rather than the platform default, and
to register event listeners with the RTDyldObjectLinkingLayer.
