Merge branch '53-gcc-9-2-0-build-new-version' into 'master'

Resolve "gcc/9.2.0: build new version"

Closes #53

See merge request Pmodules/buildblocks!67

Programming/gcc/build

@@ -2,13 +2,8 @@
 
 pbuild::set_download_url "https://ftp.gnu.org/gnu/gcc/$P-$V/$P-$V.tar.gz"
 
-# use system gcc to compile
-#declare -rx CC=gcc
-#declare -rx CXX=g++
-
 pbuild::add_to_group 'Programming'
 pbuild::install_docfiles 'COPYING' 'COPYING.LIB' 'COPYING.RUNTIME' 'COPYING3' 'COPYING3.LIB' 'NEWS' 'README'
-pbuild::compile_in_sourcetree
 
 #pbuild::pre_prep_Darwin() {
 #	if (( V_MAJOR == 8 )); then

Programming/gcc/files/variants.rhel6

@@ -30,5 +30,5 @@ gcc/8.2.0	stable		b:gmp/6.1.2 b:mpfr/4.0.1 b:mpc/1.1.0
 gcc/8.3.0	stable		b:gmp/6.1.2-1 b:mpfr/4.0.2 b:mpc/1.1.0-3
 
 gcc/9.1.0	stable		b:gmp/6.1.2-1 b:mpfr/4.0.2 b:mpc/1.1.0-3
-gcc/9.2.0	stable		b:gmp/6.1.2-1 b:mpfr/4.0.2 b:mpc/1.1.0-3
+gcc/9.2.0	stable		b:gmp/6.1.2-1 b:mpfr/4.0.2 b:mpc/1.1.0-3 b:isl/0.21