7.2.5 Variants of dg-require-support

A few of the dg-require directives take arguments.

dg-require-iconv codeset

Skip the test if the target does not support iconv. codeset is the codeset to convert to.

dg-require-profiling profopt

Skip the test if the target does not support profiling with option profopt.

dg-require-visibility vis

Skip the test if the target does not support the visibility attribute. If vis is "", support for visibility("hidden") is checked, for visibility("vis") otherwise.

The original dg-require directives were defined before there was support for effective-target keywords. The directives that do not take arguments could be replaced with effective-target keywords.

dg-require-alias ""

Skip the test if the target does not support the `alias' attribute.

dg-require-compat-dfp ""

Skip this test unless both compilers in a compat testsuite support decimal floating point.

dg-require-cxa-atexit ""

Skip the test if the target does not support __cxa_atexit. This is equivalent to dg-require-effective-target cxa_atexit.

dg-require-dll ""

Skip the test if the target does not support DLL attributes.

dg-require-fork ""

Skip the test if the target does not support fork.

dg-require-gc-sections ""

Skip the test if the target's linker does not support the --gc-sections flags. This is equivalent to dg-require-effective-target gc-sections.

dg-require-host-local ""

Skip the test if the host is remote, rather than the same as the build system. Some tests are incompatible with DejaGnu's handling of remote hosts, which involves copying the source file to the host and compiling it with a relative path and "-o a.out".

dg-require-mkfifo ""

Skip the test if the target does not support mkfifo.

dg-require-named-sections ""

Skip the test is the target does not support named sections. This is equivalent to dg-require-effective-target named_sections.

dg-require-weak ""

Skip the test if the target does not support weak symbols.

dg-require-weak-override ""

Skip the test if the target does not support overriding weak symbols.