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52 lines
1.6 KiB
CMake
52 lines
1.6 KiB
CMake
INCLUDE (CheckCXXSourceRuns)
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INCLUDE (ExternalProject)
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SET(WITH_LIBFMT "auto" CACHE STRING
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"Which libfmt to use (possible values are 'bundled', 'system', or 'auto')")
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MACRO(BUNDLE_LIBFMT)
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SET(dir "${CMAKE_BINARY_DIR}/extra/libfmt")
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SET(LIBFMT_INCLUDE_DIR "${dir}/src/libfmt/include")
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IF(CMAKE_VERSION VERSION_GREATER "3.0")
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SET(fmt_byproducts BUILD_BYPRODUCTS ${LIBFMT_INCLUDE_DIR}/fmt/format-inl.h)
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ENDIF()
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ExternalProject_Add(
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libfmt
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PREFIX "${dir}"
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URL "https://github.com/fmtlib/fmt/releases/download/11.1.4/fmt-11.1.4.zip"
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URL_MD5 ad6a56b15cddf4aad2a234e7cfc9e8c9
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INSTALL_COMMAND ""
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CONFIGURE_COMMAND ""
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BUILD_COMMAND ""
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${fmt_byproducts}
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)
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ENDMACRO()
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MACRO (CHECK_LIBFMT)
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IF(WITH_LIBFMT STREQUAL "system" OR WITH_LIBFMT STREQUAL "auto")
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SET(CMAKE_REQUIRED_INCLUDES ${LIBFMT_INCLUDE_DIR})
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CHECK_CXX_SOURCE_RUNS(
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"#define FMT_HEADER_ONLY 1
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#include <fmt/args.h>
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int main() {
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using ArgStore= fmt::dynamic_format_arg_store<fmt::format_context>;
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ArgStore arg_store;
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int answer= 4321;
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arg_store.push_back(answer);
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return fmt::vformat(\"{}\", arg_store).compare(\"4321\");
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}" HAVE_SYSTEM_LIBFMT)
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SET(CMAKE_REQUIRED_INCLUDES)
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ENDIF()
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IF(NOT HAVE_SYSTEM_LIBFMT OR WITH_LIBFMT STREQUAL "bundled")
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IF (WITH_LIBFMT STREQUAL "system")
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MESSAGE(FATAL_ERROR "system libfmt library is not found or unusable")
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ENDIF()
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BUNDLE_LIBFMT()
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ELSE()
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FIND_FILE(Libfmt_core_h fmt/core.h) # for build_depends.cmake
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ENDIF()
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ENDMACRO()
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MARK_AS_ADVANCED(LIBFMT_INCLUDE_DIR)
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