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install: Replace scripts/output-format.sed with objdump -f [BZ #26559]

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GNU ld and gold have supported --print-output-format since 2011. glibc
requires binutils>=2.25 (2015), so if LD is GNU ld or gold, we can
assume the option is supported.

lld is by default a cross linker supporting multiple targets. It auto
detects the file format and does not need OUTPUT_FORMAT. It does not
support --print-output-format.

By parsing objdump -f, we can support all the three linkers.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
This commit is contained in:
Fangrui Song
2021-01-11 11:56:54 -08:00
parent bf7db6d369
commit 87d583c6e8
6 changed files with 3 additions and 77 deletions
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35
scripts/output-format.sed
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@ -1,35 +0,0 @@
/ld.*[ ]-E[BL]/b f
/collect.*[ ]-E[BL]/b f
/OUTPUT_FORMAT[^)]*$/{N
s/\n[ ]*/ /
}
t o
: o
s/^.*OUTPUT_FORMAT(\([^,]*\), \1, \1).*$/OUTPUT_FORMAT(\1)/
t q
s/^.*OUTPUT_FORMAT(\([^,]*\), \([^,]*\), \([^,]*\)).*$/\1,\2,\3/
t s
s/^.*OUTPUT_FORMAT(\([^,)]*\).*$)/OUTPUT_FORMAT(\1)/
t q
d
: s
s/"//g
G
s/\n//
s/^\([^,]*\),\([^,]*\),\([^,]*\),B/OUTPUT_FORMAT(\2)/p
s/^\([^,]*\),\([^,]*\),\([^,]*\),L/OUTPUT_FORMAT(\3)/p
s/^\([^,]*\),\([^,]*\),\([^,]*\)/OUTPUT_FORMAT(\1)/p
/,/s|^|*** BUG in libc/scripts/output-format.sed *** |p
q
: q
s/"//g
p
q
: f
s/^.*[ ]-E\([BL]\)[ ].*$/,\1/
t h
s/^.*[ ]-E\([BL]\)$/,\1/
t h
d
: h
h