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Re: Does anyone know bash scripting?
Posted: Mon Nov 17, 2014 12:52 pm
by sledgehammer_999
Thanks for the alternative way. I'll take into consideration when I'll commence hacking on the unix build system.
Re: Does anyone know bash scripting?
Posted: Mon Nov 17, 2014 11:13 pm
by pmzqla
[quote="sledgehammer_999"]
Thanks for the alternative way. I'll take into consideration when I'll commence hacking on the unix build system.
[/quote]
I wrote it mostly because the other solution posted is not working for me and since I'm not good with awk, I rewrote an alternative solution using sed and cut.
PS: I re-modified the script so that it works with paths containing " -", although I had to make a more complex regular expression.
[quote="sledgehammer_999"]
I wonder if it is possible to auto-create the 3 variables like m4 scripts do in configure.ac.
eg Let's say that you pass only CFLAGS to extract(). extract() parses $1 and creates these 3 vars: $1_INCLUDEPATH, $1_DEFINES and $1_OTHER. So if you pass CFLAGS you get CFLAGS_INCLUDEPATH, CFLAGS_DEFINES and CFLAGS_OTHER.
Is it that possible? I don't if bash has similar feature to the m4 language.
[/quote]
And to answer this question. You need eval to do it, but I don't think it's something commonly done.
Example:
Code: Select all
PREFIX=whatever
eval ${PREFIX}_DEFINES=content
echo $whatever_DEFINES #outputs 'content'
Re: Does anyone know bash scripting?
Posted: Tue Nov 18, 2014 11:27 pm
by sledgehammer_999
@littletree76
Unfortunately the only script from the ones you have provided is this one:
Code: Select all
#!/bin/sh
awk=/usr/bin/awk
tee=/usr/bin/tee
### Assigment of variable to be processed.
CFLAGS='xxx -I/usr/local/include/libtorrent -DRANDOM_DEF yyy -I/usr/local/include/boost -DRANDOM_DEF2=456 zzz'
### Processing start here.
### Cut and paste between the two dotted comment lines.
### -------------------------------------------------------------------------------------------------------------
VAR1=`echo $CFLAGS | $awk -F" " '{ for ( i=1; i<=NF; i++ ) if ( $i ~ /^-I/ ) printf "%s ", $i }'`
VAR2=`echo $CFLAGS | $awk -F" " '{ for ( i=1; i<=NF; i++ ) if ( $i ~ /^-D/ ) printf "%s ", $i }'`
VAR3=`echo $CFLAGS | $awk -F" " '{ for ( i=1; i<=NF; i++ ) if ( $i !~ /^-I/ && $i !~ /^-D/ ) printf "%s ", $i }'`
### Strip away extra characters.
VAR1=`echo $VAR1 | $awk '{ gsub("-.| $", "", $0); print }'`
VAR2=`echo $VAR2 | $awk '{ gsub("-.| $", "", $0); print }'`
VAR3=`echo $VAR3 | $awk '{ gsub(" $", "", $0); print }'`
echo $VAR1
echo "--------------------"
echo $VAR2
echo "--------------------"
echo $VAR3
echo "--------------------"
The others make the 3 variables have the SAME value which is "xxx yyy zzz"
@pmzqla
This code
Code: Select all
#!/bin/sh
# $1: String to parse
# Set $DEFINES, $INCLUDES, $OTHER
extract() {
if [ -z "$1" ]; then
echo "Input string required"
return 1
fi
# Convert " -" to "\n" if not between quotes
string=$(echo " "$CFLAGS | sed -e 's: -:\n:g' -e 's:"\(.*\)\n\(.*\)":\"\1 -\2":g' -e "s:'\(.*\)\n\(.*\)':\'\1 -\2':g")
SAVEIFS=$IFS
IFS=$(printf "\n\b")
for i in $string; do
case "$(echo "$i" | cut -c1)" in
'') ;;
D) VAR2="$(echo $i | cut -c2-) $VAR2";;
I) VAR1="$(echo $i | cut -c2-) $VAR1";;
*) VAR3="-$i $VAR3";;
esac
done
IFS=$SAVEIFS
}
CFLAGS='xxx -I/usr/local/include/libtorrent -DRANDOM_DEF yyy -I/usr/local/include/boost -DRANDOM_DEF2=456 zzz'
extract $CFLAGS
echo $VAR1
echo "--------------------"
echo $VAR2
echo "--------------------"
echo $VAR3
echo "--------------------"
Outputs
Code: Select all
/usr/local/include/boost /usr/local/include/libtorrent
--------------------
RANDOM_DEF2=456 zzz RANDOM_DEF yyy
--------------------
- xxx
--------------------
As you can see zzz and yyy don't belong in the defines.
Re: Does anyone know bash scripting?
Posted: Tue Nov 18, 2014 11:35 pm
by pmzqla
[quote="sledgehammer_999"]
-- cut --
Outputs
Code: Select all
/usr/local/include/boost /usr/local/include/libtorrent
--------------------
RANDOM_DEF2=456 zzz RANDOM_DEF yyy
--------------------
- xxx
--------------------
As you can see zzz and yyy don't belong in the defines.
[/quote]
I removed a comment in the last edit by mistake. The code relies on the fact that each flag starts with "-", which AFAIK is true.
EDIT:
Try with:
Code: Select all
CFLAGS='-xxx -I/usr/local/include/libtorrent -DRANDOM_DEF -yyy -I/usr/local/include/boost -DRANDOM_DEF2=456 -zzz'
Re: Does anyone know bash scripting?
Posted: Wed Nov 19, 2014 12:07 am
by sledgehammer_999
[quote="pmzqla"]
[quote="sledgehammer_999"]
-- cut --
Outputs
Code: Select all
/usr/local/include/boost /usr/local/include/libtorrent
--------------------
RANDOM_DEF2=456 zzz RANDOM_DEF yyy
--------------------
- xxx
--------------------
As you can see zzz and yyy don't belong in the defines.
[/quote]
I removed a comment in the last edit by mistake. The code relies on the fact that each flag starts with "-", which AFAIK is true.
EDIT:
Try with:
Code: Select all
CFLAGS='-xxx -I/usr/local/include/libtorrent -DRANDOM_DEF -yyy -I/usr/local/include/boost -DRANDOM_DEF2=456 -zzz'
[/quote]
It works now.
I suppose that all stuff in CFLAGS will probably start with "-". I can't imagine a valid compiler switch not starting with "-"