On 28 Dec 2005, at 23:21, Martin Costabel wrote:
Well, then here is the longer version of the reasons for my guess:
In my version of /usr/sbin/gcc_select, there are the two lines
actual_ver="`cc -v 2>&1 | grep -i 'gcc version'`"
current_cc="`echo \"$actual_ver\" | sed -e 's/.*gcc version \([^ ]
*\).*/\1/'`"
If you execute this (in /bin/sh) and then do
echo $current_cc
you should get "4.0.1" as a result. According to what you said
before, it looks like you are instead getting the result "gcc
version 4.0.1 (Apple Computer, Inc. build 5247)". This is the value
of $actual_ver. That is, the "sed -e ..." command is not doing
anything. I am trying to understand how this is possible, but this
is difficult from the distance. Maybe you can find it out yourself.
I think I'm a little closer, but still in the dark. When I run
$ actual_ver="`cc -v 2>&1 | grep -i 'gcc version'`"
$ echo $actual_ver
gcc version 4.0.1 (Apple Computer, Inc. build 5247)
Now you can't see this, but bash is colouring 'gcc version' red. I
didn't think anything of it, but if I try
$ echo "gcc version 4.0.1 (Apple Computer, Inc. build 5247)" | sed -e
's/.*gcc version \([^ ]*\).*/\1/'
4.0.1
I reckon that there must be some control character spat out by cc -v
which is screwing with the regexp?
Duncan
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