There are two scenarios here:
1. Standalone flang build, where we use an installed clang-tblgen
binary. We need to use find_package() to find it.
2. Combined build of clang and flang, where we want to use the
path specified in CLANG_TABLEGEN_EXE during the clang build --
however, this variable was previously not exported.
The new implementation matches what is done for mlir-tblgen.
Differential Revision: https://reviews.llvm.org/D131475
add_subdirectory(utils/TableGen)
+# Export CLANG_TABLEGEN_EXE for use by flang docs.
+set(CLANG_TABLEGEN_EXE "${CLANG_TABLEGEN_EXE}" CACHE INTERNAL "")
+
add_subdirectory(include)
# All targets below may depend on all tablegen'd files.
ARGS ${CMAKE_CURRENT_BINARY_DIR}/Source/FIR/CreateFIRLangRef.py)
# CLANG_TABLEGEN_EXE variable needs to be set for clang_tablegen to run without error
- set(CLANG_TABLEGEN_EXE clang-tblgen)
+ find_program(CLANG_TABLEGEN_EXE "clang-tblgen" ${LLVM_TOOLS_BINARY_DIR} NO_DEFAULT_PATH)
gen_rst_file_from_td(FlangCommandLineReference.rst -gen-opt-docs FlangOptionsDocs.td docs-flang-html)
endif()
if (${SPHINX_OUTPUT_MAN})