-
Notifications
You must be signed in to change notification settings - Fork 162
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Fix gcc compile checks (missing m4 file)
Signed-off-by: Ben Collins <[email protected]>
- Loading branch information
1 parent
33f8c38
commit c9d06fa
Showing
5 changed files
with
256 additions
and
8 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,243 @@ | ||
| # =========================================================================== | ||
| # https://www.gnu.org/software/autoconf-archive/ax_gcc_func_attribute.html | ||
| # =========================================================================== | ||
| # | ||
| # SYNOPSIS | ||
| # | ||
| # AX_GCC_FUNC_ATTRIBUTE(ATTRIBUTE) | ||
| # | ||
| # DESCRIPTION | ||
| # | ||
| # This macro checks if the compiler supports one of GCC's function | ||
| # attributes; many other compilers also provide function attributes with | ||
| # the same syntax. Compiler warnings are used to detect supported | ||
| # attributes as unsupported ones are ignored by default so quieting | ||
| # warnings when using this macro will yield false positives. | ||
| # | ||
| # The ATTRIBUTE parameter holds the name of the attribute to be checked. | ||
| # | ||
| # If ATTRIBUTE is supported define HAVE_FUNC_ATTRIBUTE_<ATTRIBUTE>. | ||
| # | ||
| # The macro caches its result in the ax_cv_have_func_attribute_<attribute> | ||
| # variable. | ||
| # | ||
| # The macro currently supports the following function attributes: | ||
| # | ||
| # alias | ||
| # aligned | ||
| # alloc_size | ||
| # always_inline | ||
| # artificial | ||
| # cold | ||
| # const | ||
| # constructor | ||
| # constructor_priority for constructor attribute with priority | ||
| # deprecated | ||
| # destructor | ||
| # dllexport | ||
| # dllimport | ||
| # error | ||
| # externally_visible | ||
| # fallthrough | ||
| # flatten | ||
| # format | ||
| # format_arg | ||
| # gnu_format | ||
| # gnu_inline | ||
| # hot | ||
| # ifunc | ||
| # leaf | ||
| # malloc | ||
| # noclone | ||
| # noinline | ||
| # nonnull | ||
| # noreturn | ||
| # nothrow | ||
| # optimize | ||
| # pure | ||
| # sentinel | ||
| # sentinel_position | ||
| # unused | ||
| # used | ||
| # visibility | ||
| # warning | ||
| # warn_unused_result | ||
| # weak | ||
| # weakref | ||
| # | ||
| # Unsupported function attributes will be tested with a prototype | ||
| # returning an int and not accepting any arguments and the result of the | ||
| # check might be wrong or meaningless so use with care. | ||
| # | ||
| # LICENSE | ||
| # | ||
| # Copyright (c) 2013 Gabriele Svelto <[email protected]> | ||
| # | ||
| # Copying and distribution of this file, with or without modification, are | ||
| # permitted in any medium without royalty provided the copyright notice | ||
| # and this notice are preserved. This file is offered as-is, without any | ||
| # warranty. | ||
|
|
||
| #serial 13 | ||
|
|
||
| AC_DEFUN([AX_GCC_FUNC_ATTRIBUTE], [ | ||
| AS_VAR_PUSHDEF([ac_var], [ax_cv_have_func_attribute_$1]) | ||
| AC_CACHE_CHECK([for __attribute__(($1))], [ac_var], [ | ||
| AC_LINK_IFELSE([AC_LANG_PROGRAM([ | ||
| m4_case([$1], | ||
| [alias], [ | ||
| int foo( void ) { return 0; } | ||
| int bar( void ) __attribute__(($1("foo"))); | ||
| ], | ||
| [aligned], [ | ||
| int foo( void ) __attribute__(($1(32))); | ||
| ], | ||
| [alloc_size], [ | ||
| void *foo(int a) __attribute__(($1(1))); | ||
| ], | ||
| [always_inline], [ | ||
| inline __attribute__(($1)) int foo( void ) { return 0; } | ||
| ], | ||
| [artificial], [ | ||
| inline __attribute__(($1)) int foo( void ) { return 0; } | ||
| ], | ||
| [cold], [ | ||
| int foo( void ) __attribute__(($1)); | ||
| ], | ||
| [const], [ | ||
| int foo( void ) __attribute__(($1)); | ||
| ], | ||
| [constructor_priority], [ | ||
| int foo( void ) __attribute__((__constructor__(65535/2))); | ||
| ], | ||
| [constructor], [ | ||
| int foo( void ) __attribute__(($1)); | ||
| ], | ||
| [deprecated], [ | ||
| int foo( void ) __attribute__(($1(""))); | ||
| ], | ||
| [destructor], [ | ||
| int foo( void ) __attribute__(($1)); | ||
| ], | ||
| [dllexport], [ | ||
| __attribute__(($1)) int foo( void ) { return 0; } | ||
| ], | ||
| [dllimport], [ | ||
| int foo( void ) __attribute__(($1)); | ||
| ], | ||
| [error], [ | ||
| int foo( void ) __attribute__(($1(""))); | ||
| ], | ||
| [externally_visible], [ | ||
| int foo( void ) __attribute__(($1)); | ||
| ], | ||
| [fallthrough], [ | ||
| void foo( int x ) {switch (x) { case 1: __attribute__(($1)); case 2: break ; }}; | ||
| ], | ||
| [flatten], [ | ||
| int foo( void ) __attribute__(($1)); | ||
| ], | ||
| [format], [ | ||
| int foo(const char *p, ...) __attribute__(($1(printf, 1, 2))); | ||
| ], | ||
| [gnu_format], [ | ||
| int foo(const char *p, ...) __attribute__((format(gnu_printf, 1, 2))); | ||
| ], | ||
| [format_arg], [ | ||
| char *foo(const char *p) __attribute__(($1(1))); | ||
| ], | ||
| [gnu_inline], [ | ||
| inline __attribute__(($1)) int foo( void ) { return 0; } | ||
| ], | ||
| [hot], [ | ||
| int foo( void ) __attribute__(($1)); | ||
| ], | ||
| [ifunc], [ | ||
| int my_foo( void ) { return 0; } | ||
| static int (*resolve_foo(void))(void) { return my_foo; } | ||
| int foo( void ) __attribute__(($1("resolve_foo"))); | ||
| ], | ||
| [leaf], [ | ||
| __attribute__(($1)) int foo( void ) { return 0; } | ||
| ], | ||
| [malloc], [ | ||
| void *foo( void ) __attribute__(($1)); | ||
| ], | ||
| [noclone], [ | ||
| int foo( void ) __attribute__(($1)); | ||
| ], | ||
| [noinline], [ | ||
| __attribute__(($1)) int foo( void ) { return 0; } | ||
| ], | ||
| [nonnull], [ | ||
| int foo(char *p) __attribute__(($1(1))); | ||
| ], | ||
| [noreturn], [ | ||
| void foo( void ) __attribute__(($1)); | ||
| ], | ||
| [nothrow], [ | ||
| int foo( void ) __attribute__(($1)); | ||
| ], | ||
| [optimize], [ | ||
| __attribute__(($1(3))) int foo( void ) { return 0; } | ||
| ], | ||
| [pure], [ | ||
| int foo( void ) __attribute__(($1)); | ||
| ], | ||
| [sentinel], [ | ||
| int foo(void *p, ...) __attribute__(($1)); | ||
| ], | ||
| [sentinel_position], [ | ||
| int foo(void *p, ...) __attribute__(($1(1))); | ||
| ], | ||
| [returns_nonnull], [ | ||
| void *foo( void ) __attribute__(($1)); | ||
| ], | ||
| [unused], [ | ||
| int foo( void ) __attribute__(($1)); | ||
| ], | ||
| [used], [ | ||
| int foo( void ) __attribute__(($1)); | ||
| ], | ||
| [visibility], [ | ||
| int foo_def( void ) __attribute__(($1("default"))); | ||
| int foo_hid( void ) __attribute__(($1("hidden"))); | ||
| int foo_int( void ) __attribute__(($1("internal"))); | ||
| int foo_pro( void ) __attribute__(($1("protected"))); | ||
| ], | ||
| [warning], [ | ||
| int foo( void ) __attribute__(($1(""))); | ||
| ], | ||
| [warn_unused_result], [ | ||
| int foo( void ) __attribute__(($1)); | ||
| ], | ||
| [weak], [ | ||
| int foo( void ) __attribute__(($1)); | ||
| ], | ||
| [weakref], [ | ||
| static int foo( void ) { return 0; } | ||
| static int bar( void ) __attribute__(($1("foo"))); | ||
| ], | ||
| [ | ||
| m4_warn([syntax], [Unsupported attribute $1, the test may fail]) | ||
| int foo( void ) __attribute__(($1)); | ||
| ] | ||
| )], []) | ||
| ], | ||
| dnl GCC doesn't exit with an error if an unknown attribute is | ||
| dnl provided but only outputs a warning, so accept the attribute | ||
| dnl only if no warning were issued. | ||
| [AS_IF([grep -- -Wattributes conftest.err], | ||
| [AS_VAR_SET([ac_var], [no])], | ||
| [AS_VAR_SET([ac_var], [yes])])], | ||
| [AS_VAR_SET([ac_var], [no])]) | ||
| ]) | ||
| AS_IF([test yes = AS_VAR_GET([ac_var])], | ||
| [AS_IF([test $1 = visibility], | ||
| [AC_SUBST([GCC_EXPORT], ["__attribute__((visibility(\"default\")))"])], | ||
| [AC_SUBST(AS_TR_CPP(GCC_FUNC_$1),["__attribute__((deprecated))"])], [])], []) | ||
| AS_VAR_POPDEF([ac_var]) | ||
| ]) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters