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cmake: require C 17 for the engine, native and Saigo-built games #2016

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cmake: require C 17 for the engine, native and Saigo-built games #2016

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13 changes: 10 additions & 3 deletions cmake/DaemonFlags.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -350,9 +350,16 @@ else()
# will complain about implicitly defined lseek, read, write and close.
# GNU99 or later standard is required when building lua or lua will
# complain that the compiler doesn't support 'long long'.
try_c_flag(GNU99 "-std=gnu99")
if (NOT FLAG_GNU99)
message(FATAL_ERROR "GNU99 is not supported by the compiler")
if (YOKAI_TARGET_SYSTEM_NACL AND NOT USE_NACL_SAIGO)
try_c_flag(GNU99 "-std=gnu99")
if (NOT FLAG_GNU99)
message(FATAL_ERROR "GNU99 is not supported by the compiler")
endif()
else()
try_c_flag(GNU17 "-std=gnu17")
if (NOT FLAG_GNU17)
message(FATAL_ERROR "GNU17 is not supported by the compiler")
endif()
endif()
endif()

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