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Toolchain: Add LLVM patch and script for building it

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This contains all the bits and pieces necessary to build a Clang binary
that will correctly compile SerenityOS.

I had some trouble with getting LLVM building with a single command, so
for now, I decided to build each LLVM component in a separate command
invocation. In the future, we can also make the main llvm build step
architecture-independent, but that would come with extra work to make
library and include paths work.

The binutils build invocation and related boilerplate is duplicated
because we only use `objdump` from GNU binutils in the Clang toolchain,
so most features can be disabled.
This commit is contained in:
Daniel Bertalan 2021-07-31 15:54:48 +02:00 • committed by Andreas Kling
parent 5d617be462
commit 15e217ea68
4 changed files with 1299 additions and 1 deletions
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13
Meta/build-root-filesystem.sh
View file

@ -45,7 +45,18 @@ else
chown -R 0:0 mnt/
fi
SERENITY_ARCH="${SERENITY_ARCH:-i686}"
$CP "$SERENITY_SOURCE_DIR"/Toolchain/Local/"$SERENITY_ARCH"/"$SERENITY_ARCH"-pc-serenity/lib/libgcc_s.so mnt/usr/lib/
LLVM_VERSION="${LLVM_VERSION:-12.0.1}"
if [ "$USE_CLANG_TOOLCHAIN" = "ON" ]; then
TOOLCHAIN_DIR="$SERENITY_SOURCE_DIR"/Toolchain/Local/clang/"$SERENITY_ARCH"
mkdir -p mnt/usr/lib/clang/"$LLVM_VERSION"/lib/serenity
$CP "$TOOLCHAIN_DIR"/lib/clang/"$LLVM_VERSION"/lib/serenity/* mnt/usr/lib/clang/"$LLVM_VERSION"/lib/serenity
$CP "$TOOLCHAIN_DIR"/lib/libunwind* mnt/usr/lib
$CP "$TOOLCHAIN_DIR"/lib/libc++* mnt/usr/lib
else
$CP "$SERENITY_SOURCE_DIR"/Toolchain/Local/"$SERENITY_ARCH"/"$SERENITY_ARCH"-pc-serenity/lib/libgcc_s.so mnt/usr/lib
fi
# If umask was 027 or similar when the repo was cloned,
# file permissions in Base/ are too restrictive. Restore
# the permissions needed in the image.