pkg(gcc-10.2.0): Add c, c++ and D via gcc 10.2.0

packages/gcc/10.2.0/build.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+
+# Put instructions to build your package in here
+[[ -d "bin" ]] && exit 0
+PREFIX=$(realpath $(dirname $0))
+
+mkdir -p build obj
+
+cd build
+
+curl "https://ftp.gnu.org/gnu/gcc/gcc-10.2.0/gcc-10.2.0.tar.gz" -o gcc.tar.gz
+
+tar xzf gcc.tar.gz --strip-components=1
+
+./contrib/download_prerequisites
+
+cd ../obj
+
+# === autoconf based === 
+../build/configure --prefix "$PREFIX" --enable-languages=c,c++,d --disable-multilib --disable-bootstrap
+
+make -j$(nproc)
+make install -j$(nproc)
+cd ../
+rm -rf build obj

packages/gcc/10.2.0/compile

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+#!/usr/bin/env bash
+
+# Put instructions to compile source code, remove this file if the language does not require this stage
+
+
+case "${PISTON_ALIAS}" in
+    gcc | c)
+        gcc -std=c11 $* -lm
+        ;;
+    g++ | c++ | cpp)
+        g++ -std=c++17 $*
+        ;;
+    gccgo | go)
+        gccgo $*
+        ;;
+    gdc | d)
+        gdc $*
+        ;;
+    *)
+        echo "How did you get here? (${PISTON_ALIAS})"
+        exit 1
+        ;;
+esac
+
+chmod +x a.out

packages/gcc/10.2.0/environment

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+#!/usr/bin/env bash
+
+# Put 'export' statements here for environment variables
+export PATH=$PWD/bin:$PATH

packages/gcc/10.2.0/metadata.json

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+{
+  "language": "gcc",
+  "version": "10.2.0",
+  "aliases": ["c","g++","c++","cpp","gdc","d"],
+  "author": "Thomas Hobson <git@hexf.me>"
+}

packages/gcc/10.2.0/run

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+#!/usr/bin/env bash
+
+# Put instructions to run the runtime
+
+shift # Discard main filename
+./a.out $*

packages/gcc/10.2.0/test.c

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+#include <stdio.h>
+
+int main(void) {
+    printf("OK");
+    return 0;
+}

packages/gcc/10.2.0/test.cpp

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+#include <iostream>
+
+int main(void) {
+    printf("OK");
+    return 0;
+}

packages/gcc/10.2.0/test.d

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+import std.stdio;
+
+void main() {
+    writeln("OK");
+}