On 08/04/11 17:39, Bruno Haible wrote:
Hi Bruce,
I fixed up the "mk" script to be more portable
Indeed, that looks like most portability problems have been eliminated.
tho I haven't tried it on Solaris' /bin/sh.
Probably won't work. I don't have access.
You can also test it with 'zsh', 'ksh', 'ash', and 'dash' on a glibc system.
If it works with these shells, it will likely also pass with /bin/sh on
various systems.
zsh stumbles on this:
egrep -h "$grep_expr" $errno_list | \
sed "$sed_cmd" | \
awk '{ print $1 " " $2 }' | \
sort -u -n -k2 > ${tmpd}/sorted.txt
so it is not Bourne-enough to count. It tries to run awk with
the $errno_list argument instead of just passing output through to it.
Hopeless.
ash:
> $ ash -x ./mk-err-names.sh
> ./mk-err-names.sh: 37: Syntax error: word unexpected (expecting ")")
1 #! /bin/sh
2
3 init() {
4 tmpd=`mktemp -d ${TMPDIR:-/tmp}/err-names-XXXXXX`
5 test -d "${tmpd}" || {
6 tmpd=${TMPDIR:-/tmp}/err-names-$$
7 rm -rf ${tmpd}
8 mkdir ${tmpd}
9 }
10 tmpf=${tmpd}/temp.c
11 trap "rm -rf ${tmpd}" EXIT
12 echo '#include <errno.h>' > ${tmpf}
13
14 test -z "$CC" && {
15 CC=`command -v gcc 2>/dev/null`
16 test -x "$CC" || CC=`command -v cc`
17 }
18
19 errno_list=`
20 $CC -E ${tmpf} | \
21 sed -n -e 's/\.h[^-_a-zA-Z0-9/].*/.h/' \
22 -e 's@.*\(/usr/include.*/errno\)@\1@p' | \
23 sort -u `
24
25 grep_expr='^[ ]*#[ ]*define[ ]+E[A-Z_0-9]+[ ]*[0-9]'
26 sed_cmd='s/^[ ]*#[ ]*define[ ]*//'
27
28 egrep -h "$grep_expr" $errno_list | \
29 sed "$sed_cmd" | \
30 awk '{ print $1 " " $2 }' | \
31 sort -u -n -k2 > ${tmpd}/sorted.txt
32 }
33
34 compute_limits() {
35 max_val=`sed -n '$s/^[A-Z_0-9]*[ ]*//p' ${tmpd}/sorted.txt`
36 max_width=0
37 last_val=-1
38 offset=0
Not very Bourne-like either. The others work. It seems I have 'em all.
Even Solaris' /bin/sh. I still have access to one at U of Utah. It works.
