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env-gcc-8.4.sh

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+#!/bin/bash
+#
+# Look for GCC-8.4
+x=`which gcc-8.4 2>/dev/null`
+if [ -n "$x" ]; then
+    gdir=`dirname $x`
+elif [ -f "/usr/gcc-8.4/bin/gcc" ]; then
+    gdir="/usr/gcc-8.4/bin"
+else
+    echo Cannot find GCC 8.4
+    exit 1
+fi
+
+echo GCC is in $gdir
+
+export CC="$gdir/gcc"
+export CPP="$gdir/cpp"
+export CXX="$gdir/g++"
+export PATH="$gdir:$PATH"
+
+echo Starting subshell. Type exit to exit.
+
+$SHELL
+

env-gcc-9.3.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+#
+# Look for GCC-9.3
+x=`which gcc-9.3 2>/dev/null`
+if [ -n "$x" ]; then
+    gdir=`dirname $x`
+elif [ -f "/usr/gcc-9.3/bin/gcc" ]; then
+    gdir="/usr/gcc-9.3/bin"
+else
+    echo Cannot find GCC 9.3
+    exit 1
+fi
+
+echo GCC is in $gdir
+
+export CC="$gdir/gcc"
+export CPP="$gdir/cpp"
+export CXX="$gdir/g++"
+export PATH="$gdir:$PATH"
+
+echo Starting subshell. Type exit to exit.
+
+$SHELL
+