How to make use others' C library installed not for the system-wide (Ubuntu/Linux)? Post: 303042977

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Top Forums Programming How to make use others' C library installed not for the system-wide (Ubuntu/Linux)? Post 303042977 by Neo on Wednesday 15th of January 2020 12:04:38 AM

01-15-2020

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First, I suggest when troubleshooting, you should:

Use the full path name to file, not relative path name. This will insure there are no strange, unseen PATH issues. For example:

Code:

gcc -Wall -O3 -I ./htslib-1.10.2/htslib  -o vcf_parser01 vcf.c  vcf_parser01.c

I would change this to:

Code:

gcc -Wall -O3 -I /FULL/PATH/TO/HERE/htslib-1.10.2/htslib  -o vcf_parser01 vcf.c  vcf_parser01.c

Second, you should confirm that these objects are in the PATH, exactly, and that you have read / access permission for them.

Sometimes, even the best sys admins install code under one userid, then they work as another userid, and they do not have permissions to access the file. Happens all the time (at least to me, LOL).

This is generally the first two steps I always take (back to basics, before back to the future).

Insure your PATH(s) are correct and objects / symbols are in the PATH(s), correctly.
Check file and directly permissions for the userid you are using to build.

UNIX and Linux are funny things, they generally do what they are told to do and report back the "facts" as they find them. In your case, gcc cannot find required symbols and objects. This is generally because they cannot find them, i.e. not in the search PATH or the file/directory permissions are "not as required".

Please post back and let me know if you are certain your PATHs are correct and why, using the FULL PATH names to files and directories in your command line for gcc.

Since we are not "standing behind you, watching you type", we cannot "see" what directory you are in, so to be sure, it is always best to use FULL PATH names when troubleshooting a problem like this.

Thanks.

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LEARN ABOUT DEBIAN

ubuntu-dev-tools

ubuntu-dev-tools(5)						File Formats Manual					       ubuntu-dev-tools(5)

NAME

       ubuntu-dev-tools - Configuration for the ubuntu-dev-tools package.

DESCRIPTION

       The  ubuntu-dev-tools  package  is  similar in scope to the devscripts(1) package, providing a collection of scripts which may be of use to
       Ubuntu and Debian developers or others wishing to build Debian packages.

       Some of these scripts have options which may be configured  on  a  system-wide  and  per-user  basis.   These  options  are  configured	in
       devscripts.conf(5).

       All variables are described in the script's manpages. Package-wide variables begin with "UBUNTUTOOLS" and are listed below.

       Every script which reads the configuration files can be forced to ignore them by using the --no-conf command-line option.

ENVIRONMENT

       All ubuntu-dev-tools configuration variables can be set (and overridden) by setting them in the environment (unlike devscripts).

       In addition, several scripts use the following environment variables:

       UBUMAIL
	      Overrides  DEBEMAIL  and	DEBFULLNAME  when  the	target	is  clearly  Ubuntu.   Can  either  contain an e-mail address or Full Name
	      <email@example.org>.

       DEBEMAIL, DEBFULLNAME
	      As in devscripts(1).

PACKAGE-WIDE VARIABLES
       The currently recognised package-wide variables are:

       UBUNTUTOOLS_BUILDER
	      This specifies the preferred test-builder, one of pbuilder (default), sbuild, pbuilder-dist.

       UBUNTUTOOLS_DEBIAN_MIRROR
	      The preferred Debian archive mirror.  Should be of the form http://ftp.debian.org/debian (no trailing slash).  If not specified, the
	      master will be used.

       UBUNTUTOOLS_DEBSEC_MIRROR
	      The  preferred Debian security archive mirror.  Should be of the form http://security.debian.org (no trailing slash).  If not speci-
	      fied, the master will be used.

       UBUNTUTOOLS_UBUNTU_MIRROR
	      The preferred Ubuntu archive mirror.  Should be of the form http://archive.ubuntu.com/ubuntu (no trailing slash).  If not specified,
	      the master will be used.

       UBUNTUTOOLS_UBUNTU_PORTS_MIRROR
	      The preferred Ubuntu archive mirror.  Should be of the form http://ports.ubuntu.com (no trailing slash).	If not specified, the mas-
	      ter will be used.

       UBUNTUTOOLS_LPINSTANCE
	      The launchpad instance to communicate with. e.g. production (default) or staging.

       UBUNTUTOOLS_MIRROR_FALLBACK
	      Whether or not to fall-back to the master archive mirror.  This is usually the desired behaviour, as mirrors can	lag  the  masters.
	      If on a private network with only a local mirror, you may want to set this to no.  One of yes (default) or no.

       UBUNTUTOOLS_UPDATE_BUILDER
	      Whether or not to update the test-builder before each test build.  One of yes or no (default).

       UBUNTUTOOLS_WORKDIR
	      The directory to use for preparing source packages etc.  When unset, defaults to a directory in /tmp/ named after the script.

SEE ALSO

       devscripts(1), devscripts.conf(5)

AUTHORS

       This manpage was written by Stefano Rivera <stefanor@ubuntu.com>.

ubuntu-dev-tools						 December 19 2010					       ubuntu-dev-tools(5)