Setting path for GCC? Post: 40460

Sponsored Content

Top Forums UNIX for Dummies Questions & Answers Setting path for GCC? Post 40460 by HOUSCOUS on Tuesday 16th of September 2003 01:22:27 AM

09-16-2003

Registered User

Setting path for GCC?

Dear all, I have downloaded the latest version of gcc --- gcc-3.3.1.tar.gz from gnu.org. My Linux distribution is Mandrake 9.0. This was how I installed it:

su -
passwrd:

mkdir /usr/local/src
cd /usr/local/src

gunzip /tmp/gcc-3.3.1.tar.gz #where I downloaded the file
tar xvf /tmp/gcc-3.3.1.tar

cd /opt/build
/usr/local/src/gcc-3.3.1/configure
--prefix=/usr --libdir=/usr/lib --with-slibdir=/lib --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --disable-checking --enable-long-long --enable-__cxa_atexit --enable-languages=c,c++,ada,f77,objc,java --host=i586-mandrake-linux-gnu --with-system-zlib

make
make install

After I have done all these, I used "which, whereis, -v, and --version" to check the version of GCC.

Quote:

$ which gcc
/usr/bin/gcc

$ whereis gcc
gcc: /usr/bin/gcc3.2-version /usr/bin/gcc /usr/local/bin/gcc /usr/share/man/man1/gcc.1.bz2 /usr/share/man/man1/gcc.1

$ gcc -v
Reading specs from /usr//bin/../lib/gcc-lib/i586-mandrake-linux-gnu/3.3.1/specs
Configured with: /usr/local/src/gcc-3.3.1/configure --prefix=/usr --libdir=/usr/lib --with-slibdir=/lib --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --disable-checking --enable-long-long --enable-__cxa_atexit --enable-languages=c,c++,ada,f77,objc,java --host=i586-mandrake-linux-gnu --with-system-zlib
Thread model: posix
gcc version 3.3.1

$ gcc --version
gcc (GCC) 3.3.1
Copyright (C) 2003 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

$

I can see the system holds two versions of gcc, and if I didn't guess it wrong, the system is still using the old gcc-3.2 as the default.

I have two questions here:
First, how could I set system to use gcc-3.3.1? Someone told me because gcc-3.2 was installed in /usr/bin and gcc-3.3.1 was in /usr/local/bin so I have to change the order in $PATH. I didn't understand that clear, so I went to ~/.bashrc and changed it. But after I rebooted the system, I saw the system was still using gcc-3.2. As a newbie, I hope someone could walk me through it step-by-step or even a little tip will be appreciated.
My second question is about removing the older version of gcc. I don't think I need two versions of gcc in my system since they require space. I want to remove the older version. My Mandrake 9.0 uses rpm to install gcc-3.2 in the system, so I tried to use "rpm -e gcc" to delete the old version. I failed because of the software dependency. Is there any way to remove it and not hurting my other programs have installed in my computer?

Thanx in advanced.

HOUSCOUS

HOUSCOUS

View Public Profile for HOUSCOUS

Find all posts by HOUSCOUS

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Help on setting path variable

Hi there, I need help on setting the path variable. How can I set the path variable with Bourne Shell. My scripts goes like this, but did not work. #!/bin/sh PATH=/usr/bin:/usr/ucb:/etc:/export/home/zchen/home export PATH Thanks, Z

2. Shell Programming and Scripting

Setting path

Hi all, I have a java command in a shell script. When i m executing the command from the prompt its working fine. But when i paste the same command in a shell script and execute the shell script it says path not found. Please help.

3. Solaris

Problem Setting $PATH

I am trying to install the pkg-get package to a fresh install of Solaris 10. I am able to download and install correctly using the default directory for both pkg-get and wget as found on blastwave.org. When I issue the command "which wget and which pkg-get" it returns no wget or pkg-get found in...

4. Shell Programming and Scripting

Setting up a path in UNIX

I have the following script "test". When i tried to execute it, I am not able to run it. I dunno why ? Then i tried getting the first few lines of the script which is displayed below: $head -10 test #!/bin/ksh PROG=$0;export PROG ORAUSER=`get_inf_env INFORM_DB_ACCOUNT`;export ORAUSER...

5. Shell Programming and Scripting

Setting path names

I am in a directory called /abstracts Doing tree -d gives . ├── geo1936 │ ├── geo01n01 │ ├── geo01n02 │ └── geo01n03 ├── geo1937 │ ├── geo02n01 │ ├── geo02n02 │ ├── geo02n03 │ └── geo02n04

6. UNIX for Dummies Questions & Answers

Setting up a private path

Hi all, This is probably a very simple question but I couldn't even think of how to phrase it intelligently so google could tell me the answer. Basically I am a user on a server, I am not the admin and do not have root privileges. I have downloaded a bunch of programs that I need to use and...

7. UNIX for Dummies Questions & Answers

Is there any $PATH default setting?

This is a very newbie's question: I was trying to add a new version of the same command "blastn", but the old command always shows up first. which blastn /usr/local/bin/blastnThe two versions of the same command "blastn" are located in: which -a blastn /usr/local/bin/blastn...

8. Shell Programming and Scripting

Setting class path

hi , can anybody help me to chage the class path in unix server.. what are the files need to update ....

9. Programming

Gcc linker search path order

I have a build where I wish to link against and load a specific version of a library and a different version of the same library is installed on the system. I'm using a -L option to point to the version that I wish to link against but gcc still seems to choose the installed version. Is there a way...

LEARN ABOUT CENTOS

ld.hugetlbfs

LD.HUGETLBFS(1) 					      General Commands Manual						   LD.HUGETLBFS(1)

NAME

       ld.hugetlbfs - link a program for huge pages

SYNOPSIS

       ld.hugetlbfs [options]

DESCRIPTION

       ld.hugetlbfs replaces the normal ld command for linking programs to use hugepages.  Under gcc, you should use the option -B /usr/share/lib-
       hugetlbfs which tells gcc to look in a non-standard location for the linker.  This could be set in the CFLAGS environment variable.

       -Wl,--hugetlbfs-align

	      This method of linking an application permits greater flexibility at runtime.  Using HUGETLB_ELFMAP, it is possible to control which
	      program segments are placed in hugepages.  The following four settings will cause the indicated segments to be placed in hugepages:

		      HUGETLB_ELFMAP=R	      Read-only segments (text)
		      HUGETLB_ELFMAP=W	      Writable segments (data/BSS)
		      HUGETLB_ELFMAP=RW       All segments (text/data/BSS)
		      HUGETLB_ELFMAP=no       No segments

	      It is possible to select specific huge page sizes for read-only and writable segments by using the following advanced syntax:

		      HUGETLB_ELFMAP=[R[=<pagesize>]:[W[=<pagesize>]]

	      -Wl,--hugetlbfs-link=B

	      Under binutils 2.16 or older, this option will link the application to store BSS data (only) into hugepages.

	      -Wl,--hugetlbfs-link=BDT

	      Under binutils 2.16 or older, this option will link the application to store text, initialized data and BSS data into hugepages.

FILES

       [DESTDIR|/usr/share]/doc/libhugetlbfs/HOWTO

SEE ALSO

       libhugetlbfs(7), hugectl(8), hugeedit(8)

AUTHORS

       libhugetlbfs was written by various people on the libhugetlbfs-devel mailing list.

								  March 12, 2012						   LD.HUGETLBFS(1)