10-13-2005
sed headache
Hi all,
I've got a thorny sed/regex problem and I thought somebody out there might be able to help.
I'd like to use sed in a Makefile to parse a path string. The path might look like this:
case 1: /mnt/users/bob/build/src
or
case 2: /mnt/users/bob/build/src/foo
or
case 3: /mnt/users/bob/build/src/foo/bar/src/more/src
I'd like to write a sed command which returns the string "/mnt/users/bob/build" in all cases.
Here's what I have so far:
sed -e "s^\(.*\)/src/.*^\1^g"
This works well for case 2, but not 1 or 3. I could use brute force repetition:
sed -e "s^\(.*\)/src/.*^\1^g" -e "s^\(.*\)/src/.*^\1^g" -e "s^\(.*\)/src/.*^\1^g" -e "s^\(.*\)/src/.*^\1^g"
to handle case 3, but that's downright ugly and still doesn't handle case 1.
To handle case 1 I tried this:
sed -e "s^\(.*\)/src\$^\1^g"
but this just gives an error message (maybe the end-of-line $ is not escaped properly?)
Arrgh!
Can someone please help?
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LEARN ABOUT CENTOS
create_makefile
CREATE_MAKEFILE [FIXME: manual] CREATE_MAKEFILE
NAME
create_makefile - Creates Makefile.in and Makefile from a Makefile.am
SYNOPSIS
create_makefile [relativepath/Makefile] [relativepath]
DESCRIPTION
create_makefile creates the Makefile.in and Makefile in a subdirectory containing a Makefile.am. This script saves time compared to
re-running configure completely
Note that you must supply the path to the desired MakefileMakefile.am (though the final /Makefile may be omitted).
This script may be run from the toplevel directory (the one containing configure) or from one of it's subdirectories.
If the source directory is different from the build directory (see the environment variables below), it will be assumed that the
Makefile.am and Makefile.in belong beneath the source directory and that the Makefile belongs beneath the build directory.
This utility is part of the KDE Software Development Kit.
ENVIRONMENT
One of the following variables (but not both) should be set if the source directory is different from the build directory. If the build
directory is simply a subdirectory of the source directory, the simpler variable OBJ_SUBDIR should be used.
OBJ_SUBJDIR
Indicates that the build directory is in the given subdirectory of the source directory. For instance, if the source directory is
kdesdk and the build directory is kdesdk/obj-i386-linux, then OBJ_SUBDIR should be set to obj-i386-linux.
OBJ_REPLACEMENT
A sed expression that is used to transform the source directory into the build directory. For instance, if the source directory is
~/src/kdesdk and the build directory is ~/src/kdesdk-obj, then OBJ_REPLACEMENT should be set to s#kdesdk#kdesdk-obj#.
SEE ALSO
create_makefiles(1)
AUTHORS
create_makefile was written by David Faure<faure@kde.org> and others. This manual page was prepared by Ben Burton<bab@debian.org> for the
Debian GNU/Linux system (but may be used by others).
[FIXME: source] March 8, 2003 CREATE_MAKEFILE