From 95b49e7d73ce449b377b4a4f0517ee1254231d89 Mon Sep 17 00:00:00 2001
From: Guillaume Gomez <guillaume.gomez@huawei.com>
Date: Fri, 1 Mar 2024 17:59:12 +0100
Subject: [PATCH] Build libgccjit in CI

---
 src/bootstrap/src/core/build_steps/test.rs    |  1 -
 .../dist-x86_64-linux/build-gccjit.sh         | 28 +++++++++++++++++++
 .../dist-x86_64-linux/libgccjit.version       |  1 +
 .../host-x86_64/x86_64-gnu-tools/Dockerfile   | 14 ++++++++--
 4 files changed, 40 insertions(+), 4 deletions(-)
 create mode 100644 src/ci/docker/host-x86_64/dist-x86_64-linux/build-gccjit.sh
 create mode 100644 src/ci/docker/host-x86_64/dist-x86_64-linux/libgccjit.version

diff --git a/src/bootstrap/src/core/build_steps/test.rs b/src/bootstrap/src/core/build_steps/test.rs
index 4a4497e57db..c8b659903eb 100644
--- a/src/bootstrap/src/core/build_steps/test.rs
+++ b/src/bootstrap/src/core/build_steps/test.rs
@@ -3394,7 +3394,6 @@ impl Step for CodegenGCC {
             .arg("--out-dir")
             .arg(builder.stage_out(compiler, Mode::ToolRustc).join("cg_gcc"))
             .arg("--release")
-            .arg("--no-default-features")
             .arg("--mini-tests")
             .arg("--std-tests");
         cargo.args(builder.config.test_args());
diff --git a/src/ci/docker/host-x86_64/dist-x86_64-linux/build-gccjit.sh b/src/ci/docker/host-x86_64/dist-x86_64-linux/build-gccjit.sh
new file mode 100644
index 00000000000..ec4cb344e05
--- /dev/null
+++ b/src/ci/docker/host-x86_64/dist-x86_64-linux/build-gccjit.sh
@@ -0,0 +1,28 @@
+#!/bin/sh
+
+set -ex
+
+cd $1
+
+# Setting up folders for GCC
+git clone https://github.com/antoyo/gcc gcc-src
+cd gcc-src
+git checkout $(head -1 /scripts/libgccjit.version)
+
+mkdir ../gcc-build ../gcc-install
+cd ../gcc-build
+
+# Building GCC.
+../gcc-src/configure \
+    --enable-host-shared \
+    --enable-languages=jit \
+    --enable-checking=release \
+    --disable-bootstrap \
+    --disable-multilib \
+    --prefix=$(pwd)/../gcc-install
+make
+make install
+
+rm -rf ../gcc-src
+ln -s /scripts/gcc-install/lib/libgccjit.so /usr/lib/x86_64-linux-gnu/libgccjit.so
+ln -s /scripts/gcc-install/lib/libgccjit.so /usr/lib/x86_64-linux-gnu/libgccjit.so.0
diff --git a/src/ci/docker/host-x86_64/dist-x86_64-linux/libgccjit.version b/src/ci/docker/host-x86_64/dist-x86_64-linux/libgccjit.version
new file mode 100644
index 00000000000..41bec6df5d9
--- /dev/null
+++ b/src/ci/docker/host-x86_64/dist-x86_64-linux/libgccjit.version
@@ -0,0 +1 @@
+b6f163f52
diff --git a/src/ci/docker/host-x86_64/x86_64-gnu-tools/Dockerfile b/src/ci/docker/host-x86_64/x86_64-gnu-tools/Dockerfile
index 82385ea15b7..2b66ac718db 100644
--- a/src/ci/docker/host-x86_64/x86_64-gnu-tools/Dockerfile
+++ b/src/ci/docker/host-x86_64/x86_64-gnu-tools/Dockerfile
@@ -15,7 +15,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   sudo \
   xz-utils \
   tidy \
-  libgccjit-12-dev \
   \
 # Install dependencies for chromium browser
   gconf-service \
@@ -57,13 +56,17 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   lsb-release \
   xdg-utils \
   wget \
+  # libgccjit dependencies
+  flex \
+  libmpfr-dev \
+  libgmp-dev \
+  libmpc3 \
+  libmpc-dev \
   && rm -rf /var/lib/apt/lists/*
 
 COPY scripts/sccache.sh /scripts/
 RUN sh /scripts/sccache.sh
 
-# Make `libgccjit.so` accessible.
-RUN ln -s /usr/lib/gcc/x86_64-linux-gnu/12/libgccjit.so /usr/lib/x86_64-linux-gnu/libgccjit.so
 # Fix rustc_codegen_gcc lto issues.
 ENV GCC_EXEC_PREFIX="/usr/lib/gcc/"
 
@@ -92,6 +95,11 @@ ENV RUST_CONFIGURE_ARGS \
 
 ENV HOST_TARGET x86_64-unknown-linux-gnu
 
+COPY host-x86_64/dist-x86_64-linux/libgccjit.version /scripts/
+COPY host-x86_64/dist-x86_64-linux/build-gccjit.sh /scripts/
+
+RUN sh /scripts/build-gccjit.sh /scripts
+
 ENV SCRIPT /tmp/checktools.sh ../x.py && \
   NODE_PATH=`npm root -g` python3 ../x.py test tests/rustdoc-gui --stage 2 \
     --test-args "'--no-sandbox --jobs 1'"