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https://github.com/torvalds/linux
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e0e2fa4b51
Remove perl from make headers_install by replacing a perl script (doing a simple regex search and replace) with a smaller, faster, simpler, POSIX-2008 shell script implementation. The new shell script is a single for loop calling sed and piping its output through unifdef to produce the target file. Same as last time except for minor tweak to deal with code review from here: http://lkml.indiana.edu/hypermail/linux/kernel/1302.3/00078.html (Note that this drops the "arch" argument, which isn't used. Kbuild already points to the right input files on the command line.) Signed-off-by: Rob Landley <rob@landley.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Josh Boyer <jwboyer@redhat.com> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Cc: David Howells <dhowell@redhat.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
43 lines
1.2 KiB
Bash
43 lines
1.2 KiB
Bash
#!/bin/sh
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if [ $# -lt 1 ]
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then
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echo "Usage: headers_install.sh OUTDIR [FILES...]
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echo
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echo "Prepares kernel header files for use by user space, by removing"
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echo "all compiler.h definitions and #includes, removing any"
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echo "#ifdef __KERNEL__ sections, and putting __underscores__ around"
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echo "asm/inline/volatile keywords."
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echo
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echo "OUTDIR: directory to write each userspace header FILE to."
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echo "FILES: list of header files to operate on."
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exit 1
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fi
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# Grab arguments
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OUTDIR="$1"
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shift
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# Iterate through files listed on command line
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FILE=
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trap 'rm -f "$OUTDIR/$FILE" "$OUTDIR/$FILE.sed"' EXIT
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for i in "$@"
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do
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FILE="$(basename "$i")"
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sed -r \
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-e 's/([ \t(])(__user|__force|__iomem)[ \t]/\1/g' \
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-e 's/__attribute_const__([ \t]|$)/\1/g' \
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-e 's@^#include <linux/compiler.h>@@' \
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-e 's/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g' \
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-e 's/(^|[ \t(])(inline|asm|volatile)([ \t(]|$)/\1__\2__\3/g' \
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-e 's@#(ifndef|define|endif[ \t]*/[*])[ \t]*_UAPI@#\1 @' \
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"$i" > "$OUTDIR/$FILE.sed" || exit 1
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scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ "$OUTDIR/$FILE.sed" \
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> "$OUTDIR/$FILE"
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[ $? -gt 1 ] && exit 1
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rm -f "$OUTDIR/$FILE.sed"
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done
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trap - EXIT
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