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Only use compiler features if available

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This commit is contained in:
Victor Zverovich 2020-02-02 08:29:33 -08:00
parent b55ea58705
commit 43e9b29e50
1 changed files with 7 additions and 1 deletions
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8
CMakeLists.txt
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@ -69,7 +69,13 @@ set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH}
include(cxx14)
include(CheckCXXCompilerFlag)
set(FMT_REQUIRED_FEATURES cxx_auto_type cxx_variadic_templates)
list(FIND CMAKE_CXX_COMPILE_FEATURES "cxx_variadic_templates" index)
if (${index} GREATER -1)
# Use cxx_variadic_templates instead of more appropriate cxx_std_11 for
# compatibility with older CMake versions.
set(FMT_REQUIRED_FEATURES cxx_variadic_templates)
endif ()
message(STATUS "Required features: ${FMT_REQUIRED_FEATURES}")
if (CMAKE_CXX_COMPILER_ID MATCHES "GNU")
set(PEDANTIC_COMPILE_FLAGS -pedantic-errors -Wall -Wextra -pedantic