Differences

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--- nix:gcc [2016/05/11 16:38] – [Example] kauffman
+++ nix:gcc [2021/01/20 12:25] (current) – kauffman
@@ Line 1: / Line 1: @@
 ====== GCC ======
+===== GCC Versions that are already installed on CS infrastructure =====
+Usually, we install multiple versions. The default version of GCC probably won't be changed system wide... ever.
+We are now taking more advantage of environment modules. This means depending on when you read this you could load the version of GCC you want to use.
+<code>
+$ module --terse avail |grep gcc
+/etc/environment-modules/modules:
+gcc/4.9.4
+gcc/5.5.0
+gcc/6.5.0
+gcc/7.5.0
+gcc/8.4.0
+gcc/9.3.0
+gcc/10.2.0
+</code>
+<code>
+$ module load gcc/4.9.4
+</code>
+<code>
+$ echo "$PATH | $INCLUDE | $LD_LIBRARY_PATH | $MANPATH"
+/usr/local/gcc/4.9.4/bin:/home/kauffman3/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games:/opt/puppetlabs/bin
+| /usr/local/gcc/4.9.4/include | /usr/local/gcc/4.9.4/lib |
+/usr/local/gcc/4.9.4/man:/usr/share/man
+</code>
+<code>
+$ gcc --version
+gcc (GCC) 4.9.4
+</code>
+<code>
+$ module unload gcc
+</code>
 ===== Building GCC in your home directory =====
 https://gcc.gnu.org/wiki/InstallingGCC
@@ Line 15: / Line 54: @@
 #!/bin/bash
-PREFIX="$HOME/.local/gcc/4.9.3"
+gccversion='7.1.0'
+PREFIX="$HOME/.local/gcc/${gccversion}"
-# Building gcc in $HOME
+# Building gcc
+gccversionuc="${gccversion//./_}"
 INSTALLDIR=/tmp/$USER
@@ Line 23: / Line 64: @@
 cd $INSTALLDIR
-svn co svn://gcc.gnu.org/svn/gcc/tags/gcc_4_9_3_release gcc-4.9.3
+svn co svn://gcc.gnu.org/svn/gcc/tags/gcc_${gccversionuc}_release gcc-${gccversion}
-cd gcc-4.9.3
+cd gcc-${gccversion}
 ./contrib/download_prerequisites
 cd ../
 mkdir objdir
 cd objdir
-$PWD/../gcc-4.9.3/configure \
+$PWD/../gcc-${gccversion}/configure \
   --prefix=$PREFIX \
   --enable-languages=c,c++,fortran,go \
@@ Line 40: / Line 81: @@
 # clean up
 rm -r $INSTALLDIR/objdir
 export PATH=$HOME/$PREFIX/bin:$PATH
@@ Line 51: / Line 91: @@
 </code>
-If building a package you will want to use ''checkinstall''. Replace ''make install'' something like the following:
+===== Troubleshooting =====
+==== 'module' command not found ====
+To resolve you may have to do the following:
 <code>
-checkinstall \
+source /etc/profile.d/modules.sh
-  --strip=no \
-  --stripso=no \
-  --umask=022 \
-  --install=no \
-  --pkgname='gcc-uofc-cs' \
-  --pkgversion='4.9.3' \
-  --pkgrelease='1' \
-  --pkggroup='devel' \
-  --maintainer='Techstaff \<techstaff@cs.uchicago.edu\>' \
-  --review-control \
-  make install
 </code>