prep. for building an env image

Author: codebje

Dockerfile

@@ -0,0 +1,19 @@
+FROM buildpack-deps:sable
+
+RUN useradd -ms /bin/bash ez80
+USER ez80
+WORKDIR /home/ez80
+COPY clang/0001-Emit-GAS-sytax.patch 0001-Emit-GAS-sytax.patch
+RUN curl -LO https://github.com/jacobly0/llvm-project/archive/1b767f5cc455.zip
+RUN unzip 1b767f5cc455.zip
+RUN cd llvm-project-1b767f5cc45505fb2d6285e717d439c6b1ea2e7f && patch -p1 < ../0001-Emit-GAS-sytax.patch
+RUN cd llvm-project-1b767f5cc45505fb2d6285e717d439c6b1ea2e7f \
+    && mkdir build \
+    && cmake -G Ninja -DLLVM_ENABLE_PROJECTS="clang" \
+                      -DCMAKE_INSTALL_PREFIX=/opt/local/ez80-none-elf \
+                      -DCMAKE_BUILD_TYPE=Release \
+                      -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=Z80 \
+                      -DLLVM_TARGETS_TO_BUILD= \
+                      -DLLVM_DEFAULT_TARGET_TRIPLE=ez80-none-elf \
+                      ../llvm-project-1b767f5cc45505fb2d6285e717d439c6b1ea2e7f/llvm \
+    && ninja install

README.md

@@ -2,4 +2,4 @@
 
  1. C/C++ compiler: LLVM with Clang
  2. Assembler, linker, object tools: GNU binutils
- 3. Standard library: patches from ZDS-II, fillers
+ 3. Standard library: MIT licensed from scratch reimplementation of intrinsics