CODEWITHSUNDEEP
linuxinstallationfedorayumgmp
Justin Lloyd
Justin Lloyd

Reputation: 123

Fedora - Reinstalling GMP with C++ support

I'm trying to install a library that uses gmp and am running the ./configure on it. So far, I've gotten past several snags, such as requiring gcc, g++, and m4 by using:

yum install gcc
yum install gcc-g++
yum install m4

Now I'm getting this error:

checking for the GMP library version 4.1.3 or above... no
configure: error: Cannot find GMP version 4.1.3 or higher.
GMP is the GNU Multi-Precision library:
see http://www.swox.com/gmp/ for more information.
When compiling the GMP library, do not forget to enable the C++ interface:
add --enable-cxx to the configuration options.

As such, I tried both installing and updating gmp using yum:

yum install gmp
yum update gmp

Install tells me it's already installed and is v. 5.1.2 Updating says there's nothing to update.

I went to the gmp site and it is currently v. 6.0.0

I downloaded it and ran configure (using --enable-cxx), make, and make install. Yet, nothing has changed. It still says I have v. 5.1.2 and the configure for the library still says it can't find 4.1.3 and above / try enabling c++. The gmp files (such as gmp.h) are being placed in /usr/local/lib and /include

I've been at this for hours without any progress. I'm rather new to linux so I imagine there's something I just don't know about.

Am I not installing 6.0.0 correctly to overwrite the already installed one? Or is there a way to reinstall the original with the c++ option?

Any help would be appreciated. Thanks.

Upvotes: 0

Views: 5278

Answers (3)

Dark Burrow
Dark Burrow

Reputation: 41

dnf install gmp-devel resolved this for me on rhel

Upvotes: 2

Justin Lloyd
Justin Lloyd

Reputation: 123

I figured it out.
Under the --help section of the ./configure for the library I was trying to install, there was actually a feature just for this:

--with-gmp-include=DIR
--with-gmp-lib=DIR

Using these, I was able to get it to install.
Thanks for the help.

I think I was too focused on trying to update the system install of gmp.

Upvotes: -1

Tyler
Tyler

Reputation: 1837

When you manually install something, as you have, it doesn't get installed in the normal /usr/lib directory and therefore it doesn't overwrite it. This is a good thing. In general, you shouldn't mess with files installed by the package manager. (Except in the case that they are config files that are meant to be edited.)

When you install manually, it is installed to /usr/local/lib. Fortunately, GCC and other compilers don't care which directory something is installed in, they will find it (when it's in standard places like /usr/* or /usr/local/*).

Just include the C++ header and add the correct -l library flag.

Upvotes: 1

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