[PATCH] scripts: headers_install.sh: Normalize __ASSEMBLY__ to __ASSEMBLER__
Thomas Huth <[email protected]> Mon, 20 Jul 2026 12:10:25 +0200
| Newsgroups | org.kernel.vger.linux-kbuild,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
From: Thomas Huth <[email protected]> A previous patch to headers_install.sh normalized the usage of __ASSEMBLER__ to __ASSEMBLY__ in the UAPI headers due to the assumption that older versions of GCC might not define __ASSEMBLER__ automatically and thus using __ASSEMBLER__ in the UAPI headers might break compilation with very old versions of GCC. However, as we now reassured, even GCC 2.95 still defines __ASSEMBLER__ automatically (and even older versions are hopefully not in use with the current Linux UAPI headers anymore). __ASSEMBLER__ is also set automatically by other C compilers like PCC (see https://github.com/IanHarvey/pcc/blob/cvs2git/2018.09.20/cc/cc/cc.1#L405) and Tiny-C (see https://repo.or.cz/tinycc.git/commitdiff/a25325e9be13e52a), so using __ASSEMBLER__ in UAPI header files should really be fine. Thus let's head forwards and standardize on __ASSEMBLER__ instead of __ASSEMBLY__ in the UAPI header files now. Suggested-by: Thomas Weißschuh <[email protected]> Link: https://lore.kernel.org/all/[email protected]/ Signed-off-by: Thomas Huth <[email protected]> --- Based-on: https://lore.kernel.org/all/[email protected]/ To avoid the churn, feel free to squash this patch with Thomas Weißschuh's original patch as long as it has not been merged to Linus' tree yet. scripts/headers_install.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/scripts/headers_install.sh b/scripts/headers_install.sh index 83e4475968781..2f1d1767ca267 100755 --- a/scripts/headers_install.sh +++ b/scripts/headers_install.sh @@ -36,7 +36,7 @@ sed -E -e ' s/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g s/(^|[[:space:](])(inline|asm|volatile)([[:space:](]|$)/\1__\2__\3/g s@#(ifndef|define|endif[[:space:]]*/[*])[[:space:]]*_UAPI@#\1 @ - s/__ASSEMBLER__/__ASSEMBLY__/g + s/__ASSEMBLY__/__ASSEMBLER__/g ' $INFILE > $TMPFILE || exit 1 scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ $TMPFILE > $OUTFILE -- 2.55.0