TestCXXAcceptsFlag

Deprecated since version 3.0: This module should no longer be used. It has been superseded by the CheckCXXCompilerFlag module. As of CMake 3.19, the CheckCompilerFlag module is also available for checking flags across multiple languages.

This module provides a command to test whether the C++ (CXX) compiler supports specific flags.

Load this module in a CMake project with:

include(TestCXXAcceptsFlag)

Commands

This module provides the following command:

check_cxx_accepts_flag

Checks whether the CXX compiler accepts the specified flags:

check_cxx_accepts_flag(<flags> <result-variable>)

<flags>

One or more compiler flags to test. For multiple flags, provide them as a space-separated string.

<result-variable>

Name of an internal cache variable that stores the result. It is set to boolean true if the compiler accepts the flags and false otherwise.

Examples

Checking if the C++ compiler supports specific flags:

include(TestCXXAcceptsFlag)
check_cxx_accepts_flag("-fno-common -fstack-clash-protection" HAVE_FLAGS)

Migrating to the CheckCompilerFlag module:

include(CheckCompilerFlag)
check_compiler_flag(CXX "-fno-common;-fstack-clash-protection" HAVE_FLAGS)