Module Conftest

Configure check to see if the compiler works.
Note that this uses the current value of compiler and linker flags, make
sure $CFLAGS, $CPPFLAGS and $LIBS are set correctly.
"language" should be "C" or "C++" and is used to select the compiler.
Default is "C".
"text" may be used to specify the code to be build.
Returns an empty string for success, an error message for failure.

Configure check for a working C compiler.

This checks whether the C compiler, as defined in the $CC construction
variable, can compile a C source file. It uses the current $CCCOM value
too, so that it can test against non working flags.

Configure check for a working shared C compiler.

This checks whether the C compiler, as defined in the $SHCC construction
variable, can compile a C source file. It uses the current $SHCCCOM value
too, so that it can test against non working flags.

Configure check for a working CXX compiler.

This checks whether the CXX compiler, as defined in the $CXX construction
variable, can compile a CXX source file. It uses the current $CXXCOM value
too, so that it can test against non working flags.

Configure check for a working shared CXX compiler.

This checks whether the CXX compiler, as defined in the $SHCXX construction
variable, can compile a CXX source file. It uses the current $SHCXXCOM value
too, so that it can test against non working flags.

Configure check for a function "function_name".
"language" should be "C" or "C++" and is used to select the compiler.
Default is "C".
Optional "header" can be defined to define a function prototype, include a
header file or anything else that comes before main().
Sets HAVE_function_name in context.havedict according to the result.
Note that this uses the current value of compiler and linker flags, make
sure $CFLAGS, $CPPFLAGS and $LIBS are set correctly.
Returns an empty string for success, an error message for failure.

Configure check for a C or C++ header file "header_name".
Optional "header" can be defined to do something before including the
header file (unusual, supported for consistency).
"language" should be "C" or "C++" and is used to select the compiler.
Default is "C".
Sets HAVE_header_name in context.havedict according to the result.
Note that this uses the current value of compiler and linker flags, make
sure $CFLAGS and $CPPFLAGS are set correctly.
Returns an empty string for success, an error message for failure.

Configure check for a C or C++ type "type_name".
Optional "header" can be defined to include a header file.
"language" should be "C" or "C++" and is used to select the compiler.
Default is "C".
Sets HAVE_type_name in context.havedict according to the result.
Note that this uses the current value of compiler and linker flags, make
sure $CFLAGS, $CPPFLAGS and $LIBS are set correctly.
Returns an empty string for success, an error message for failure.

This check can be used to get the size of a given type, or to check whether
the type is of expected size.

Arguments:
    - type : str
        the type to check
    - includes : sequence
        list of headers to include in the test code before testing the type
    - language : str
        'C' or 'C++'
    - expect : int
        if given, will test wether the type has the given number of bytes.
        If not given, will automatically find the size.

    Returns:
        status : int
            0 if the check failed, or the found size of the type if the check succeeded.

Checks whether symbol is declared.

Use the same test as autoconf, that is test whether the symbol is defined
as a macro or can be used as an r-value.

Arguments:
    symbol : str
        the symbol to check
    includes : str
        Optional "header" can be defined to include a header file.
    language : str
        only C and C++ supported.

Returns:
    status : bool
        True if the check failed, False if succeeded.

Configure check for a C or C++ libraries "libs".  Searches through
the list of libraries, until one is found where the test succeeds.
Tests if "func_name" or "call" exists in the library.  Note: if it exists
in another library the test succeeds anyway!
Optional "header" can be defined to include a header file.  If not given a
default prototype for "func_name" is added.
Optional "extra_libs" is a list of library names to be added after
"lib_name" in the build command.  To be used for libraries that "lib_name"
depends on.
Optional "call" replaces the call to "func_name" in the test code.  It must
consist of complete C statements, including a trailing ";".
Both "func_name" and "call" arguments are optional, and in that case, just
linking against the libs is tested.
"language" should be "C" or "C++" and is used to select the compiler.
Default is "C".
Note that this uses the current value of compiler and linker flags, make
sure $CFLAGS, $CPPFLAGS and $LIBS are set correctly.
Returns an empty string for success, an error message for failure.