Csaba Osztrogonác daba2b76fc Fix HAVE_M_LIB check for older CMake (#4437) ...

With older CMake (for example 2.8.12.2) the feature check of HAVE_M_LIB
reports false positive fail due to -Werror=strict-prototypes. It is already
fixed in CMake https://gitlab.kitware.com/cmake/cmake/-/commit/4bc17345

The feature is present and works, so we should only ignore this build warning.

Additionally the necessary GCC/Clang guard added to the similar
CMake feature check in jerry-port/default/CMakeLists.txt

JerryScript-DCO-1.0-Signed-off-by: Csaba Osztrogonác csaba.osztrogonac@h-lab.eu

2021-01-11 11:26:47 +01:00

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Fix HAVE_M_LIB check for older CMake (#4437)

2021-01-11 11:26:47 +01:00