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[flang] Allow configuring building the flang runtime standalone 

This allows building the flang runtime and libFortranDecimal standalone,
without setting up the full llvm build, by pointing cmake to these
directories.

This is the other one out of two essential steps for building the flang runtimes
for a foreign target, i.e. setting up cross compiling with flang.

Differential Revision: https://reviews.llvm.org/D130352
This commit is contained in:
Martin Storsjö 2022-07-20 00:47:02 +03:00
parent 96a3b78183
commit b75a3c9f31
2 changed files with 75 additions and 0 deletions
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37
flang/lib/Decimal/CMakeLists.txt
View File

@ -1,3 +1,40 @@
if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
cmake_minimum_required(VERSION 3.13.4)
project(FortranDecimal C CXX)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED TRUE)
set(CMAKE_CXX_EXTENSIONS OFF)
set(FLANG_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../..")
set(LLVM_COMMON_CMAKE_UTILS "${FLANG_SOURCE_DIR}/../cmake")
set(LLVM_CMAKE_UTILS "${FLANG_SOURCE_DIR}/../llvm/cmake")
# Add path for custom modules
list(INSERT CMAKE_MODULE_PATH 0
"${FLANG_SOURCE_DIR}/cmake"
"${FLANG_SOURCE_DIR}/cmake/modules"
"${LLVM_COMMON_CMAKE_UTILS}"
"${LLVM_COMMON_CMAKE_UTILS}/Modules"
"${LLVM_CMAKE_UTILS}"
"${LLVM_CMAKE_UTILS}/modules"
)
include(AddLLVM)
include(AddFlang)
include(TestBigEndian)
test_big_endian(IS_BIGENDIAN)
if (IS_BIGENDIAN)
add_compile_definitions(FLANG_BIG_ENDIAN=1)
else ()
add_compile_definitions(FLANG_LITTLE_ENDIAN=1)
endif ()
include_directories(BEFORE
${FLANG_SOURCE_DIR}/include)
endif()
add_flang_library(FortranDecimal INSTALL_WITH_TOOLCHAIN
binary-to-decimal.cpp

38
flang/runtime/CMakeLists.txt
View File

@ -6,6 +6,44 @@
#
#===------------------------------------------------------------------------===#
if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
cmake_minimum_required(VERSION 3.13.4)
project(FlangRuntime C CXX)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED TRUE)
set(CMAKE_CXX_EXTENSIONS OFF)
set(FLANG_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/..")
set(LLVM_COMMON_CMAKE_UTILS "${FLANG_SOURCE_DIR}/../cmake")
set(LLVM_CMAKE_UTILS "${FLANG_SOURCE_DIR}/../llvm/cmake")
# Add path for custom modules
list(INSERT CMAKE_MODULE_PATH 0
"${FLANG_SOURCE_DIR}/cmake"
"${FLANG_SOURCE_DIR}/cmake/modules"
"${LLVM_COMMON_CMAKE_UTILS}"
"${LLVM_COMMON_CMAKE_UTILS}/Modules"
"${LLVM_CMAKE_UTILS}"
"${LLVM_CMAKE_UTILS}/modules"
)
include(AddLLVM)
include(AddFlang)
include(TestBigEndian)
test_big_endian(IS_BIGENDIAN)
if (IS_BIGENDIAN)
add_compile_definitions(FLANG_BIG_ENDIAN=1)
else ()
add_compile_definitions(FLANG_LITTLE_ENDIAN=1)
endif ()
include_directories(BEFORE
${FLANG_SOURCE_DIR}/include)
endif()
include(CheckCXXSymbolExists)
include(CheckCXXSourceCompiles)
check_cxx_symbol_exists(strerror string.h HAVE_STRERROR)