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command.h: Add a U_BOOT_LONGHELP macro

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In order to be able to discard unused long help texts without further
linker lists, add a macro for defining the long help messages which uses
__maybe_unused.  This allows us to discard them as unreferenced as part
of the link.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Tom Rini 2023-10-07 15:13:07 -04:00
parent ef3ceb2cae
commit dec5777fff
1 changed files with 3 additions and 0 deletions
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3
include/command.h
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@ -328,6 +328,9 @@ int cmd_source_script(ulong addr, const char *fit_uname, const char *confname);
# define _CMD_HELP(x)
#endif
#define U_BOOT_LONGHELP(_cmdname, text) \
static __maybe_unused const char _cmdname##_help_text[] = text
#define U_BOOT_SUBCMDS_DO_CMD(_cmdname) \
static int do_##_cmdname(struct cmd_tbl *cmdtp, int flag, \
int argc, char *const argv[], \