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This question is an exact duplicate of:

I want to install a library libevent . I forgot to su root and run ./configure under my user acount esolve. Then I notice there are errors after running make install with esolve.

My root can't modify files which are modified by esolve (I'm not very clear why, because this computer's Linux OS has been configured by some system/network administrator).

Now I su root and run ./configure, and I get the following error:

 ./configure: line 2178 config.log permission denied

So where can I find the config.log file and remove or modify it?

FYI - my computer: 3.6.10-2.fc16.x86_64

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migrated from Jun 16 '13 at 16:52

This question came from our site for users of Linux, FreeBSD and other Un*x-like operating systems.

marked as duplicate by Daniel Beck Jun 16 '13 at 17:14

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

up vote 1 down vote accepted

If you're running the ./configure command in a specific directory, I'd expect the config.log to be in that location. You can run this command to find the file from that directory:

$ find . -name "config.log"

If you're accessing a directory that is mounted from another system then root may not have access to do things on this mounted directory. This is typically the case in Linux/UNIX.

You can check by running this command, again run this from the same directory above:

$ df -h .
Filesystem            Size  Used Avail Use% Mounted on
                      429G  375G   32G  93% /

If you see a path like: /dev/... then the directory is part of the local filesystem of the computer, if you see something like these:

# windows share mounted locally
$ df -h .
Filesystem            Size  Used Avail Use% Mounted on
//remotecomputer/t    22T   12T   10T  55% /remote/t

# linux share mounted locally
$ df -h .
Filesystem            Size  Used Avail Use% Mounted on
                       43G   33G  8.3G  80% /cobbler/isos

Then the filesystem is being mounted from another computer and shown as part of the local filesystem, even though it technically isn't.

It's in these last 2 cases where root often times doesn't have write permissions to the shared directories.

compiling on a remote share

Typically what I would do is run the first 2 steps of the compilation as a non-root user and then switch over to root for the installation step:

as non-root

$ ./configure
$ make

as root

$ make install

Assuming that the target for the installation is some local directory to the computer such as /usr or /usr/local.

share|improve this answer
you are right, the directory is mounted from another system. then what can I do if I want to install the library? – misteryes Jun 14 '13 at 17:25
You should be able to run the ./configure & make steps as your non-root account, and then run the make install as root. Are you specifying local paths for the ./configure? – slm Jun 14 '13 at 17:27

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