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thirdparty: add thirdparty/build_scripts/ to prepare for prebuilt tcc upgrades (#23981)
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‎thirdparty/build_scripts/README.md‎

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This folder, contains build scripts used by the CI, to generate prebuilt versions
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(or latest version by default) of:
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A) TCC from https://repo.or.cz/tinycc.git/
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B) libgc from https://github.com/ivmai/bdwgc/
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In time, if everything works fine, we can deprecate the older approach, keeping 2 *separate*
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binary repos, tccbin/ and libgcbin/, with just pointers back to the build scripts here.
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Note: the previous approach (before 2024/08), used in https://github.com/vlang/tccbin/,
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where that separate repo contained both prebuilt binaries for tcc AND libgc.a,
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AND the separate scripts to generate them, in *separate branches*.
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In contrast, this folder contains *all scripts in the same location, in the same branch*, just
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with different names, thus making editing them all at the same time and in atomic commits,
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that can be reviewed and tested separately in PRs on the CI *much easier*.
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WARNING: this is still experimental, and should not be used, except to ease testing on the CI.

‎thirdparty/build_scripts/thirdparty-linux-amd64_bdwgc.sh‎

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#!/usr/bin/env bash
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set -e
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if ! test -f vlib/v/compiler_errors_test.v; then
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echo "this script should be run in V's main repo folder!"
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exit 1
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fi
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export CURRENT_SCRIPT_PATH=$(realpath "$0")
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export CC="${CC:-gcc}"
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export TCC_FOLDER="${TCC_FOLDER:-thirdparty/tcc}"
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export LIBGC_COMMIT="${LIBGC_COMMIT:-master}"
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mkdir -p $TCC_FOLDER/lib/
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echo " CC: $CC"
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echo " TCC_FOLDER: $TCC_FOLDER"
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echo "LIBGC_COMMIT: $LIBGC_COMMIT"
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echo ===============================================================
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rm -rf bdwgc/
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pushd .
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git clone https://github.com/ivmai/bdwgc
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cd bdwgc/
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git checkout $LIBGC_COMMIT
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export LIBGC_COMMIT_FULL_HASH=$(git rev-parse HEAD)
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./autogen.sh
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CC=$CC CFLAGS='-Os -mtune=generic -fPIC' LDFLAGS='-Os -fPIC' ./configure \
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--disable-dependency-tracking \
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--disable-docs \
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--enable-handle-fork=yes \
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--enable-rwlock \
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--enable-threads=pthreads \
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--enable-static \
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--enable-shared=no \
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--enable-parallel-mark \
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--enable-single-obj-compilation \
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--enable-gc-debug \
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--with-libatomic-ops=yes \
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--enable-sigrt-signals
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make
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popd
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cp bdwgc/.libs/libgc.a $TCC_FOLDER/lib/libgc.a
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date > $TCC_FOLDER/lib/libgc_build_on_date.txt
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echo $LIBGC_COMMIT_FULL_HASH > $TCC_FOLDER/lib/libgc_build_source_hash.txt
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uname -a > $TCC_FOLDER/lib/libgc_build_machine_uname.txt
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ls -la $TCC_FOLDER/lib/libgc.a
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echo "Done compiling libgc, at commit $LIBGC_COMMIT , full hash: $LIBGC_COMMIT_FULL_HASH . The static library is in $TCC_FOLDER/lib/libgc.a "

‎thirdparty/build_scripts/thirdparty-linux-amd64_tcc.sh‎

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#!/usr/bin/env bash
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set -e
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if ! test -f vlib/v/compiler_errors_test.v; then
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echo "this script should be run in V's main repo folder!"
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exit 1
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fi
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export CURRENT_SCRIPT_PATH=$(realpath "$0")
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export TCC_COMMIT="${TCC_COMMIT:-mob}"
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export TCC_FOLDER="${TCC_FOLDER:-thirdparty/tcc.$TCC_COMMIT}"
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export CC="${CC:-gcc}"
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echo " CC: $CC"
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echo "TCC_COMMIT: $TCC_COMMIT"
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echo "TCC_FOLDER: $TCC_FOLDER"
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echo ===============================================================
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rm -rf tinycc/
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rm -rf thirdparty/tcc.original/
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rsync -a thirdparty/tcc/ thirdparty/tcc.original/
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## rm -rf $TCC_FOLDER
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pushd .
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git clone git://repo.or.cz/tinycc.git
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cd tinycc
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git checkout $TCC_COMMIT
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export TCC_COMMIT_FULL_HASH=$(git rev-parse HEAD)
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## Note: crt1.o is located in:
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## /usr/lib/x86_64-linux-gnu on Debian/Ubuntu
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## /usr/lib64 on Redhat/CentOS
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## /usr/lib on ArchLinux
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./configure \
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--prefix=$TCC_FOLDER \
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--bindir=$TCC_FOLDER \
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--crtprefix=$TCC_FOLDER/lib:/usr/lib/x86_64-linux-gnu:/usr/lib64:/usr/lib:/lib/x86_64-linux-gnu:/lib \
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--libpaths=$TCC_FOLDER/lib/tcc:$TCC_FOLDER/lib:/usr/lib/x86_64-linux-gnu:/usr/lib64:/usr/lib:/lib/x86_64-linux-gnu:/lib:/usr/local/lib/x86_64-linux-gnu:/usr/local/lib \
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--cc=$CC \
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--extra-cflags=-O3 \
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--config-bcheck=yes \
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--config-backtrace=yes \
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--debug
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make
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make install
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popd
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rsync -a --delete tinycc/$TCC_FOLDER/ $TCC_FOLDER/
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rsync -a thirdparty/tcc.original/.git/ $TCC_FOLDER/.git/
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rsync -a thirdparty/tcc.original/lib/libgc* $TCC_FOLDER/lib/
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rsync -a thirdparty/tcc.original/lib/build* $TCC_FOLDER/lib/
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rsync -a thirdparty/tcc.original/README.md $TCC_FOLDER/README.md
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rsync -a $CURRENT_SCRIPT_PATH $TCC_FOLDER/build.sh
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mv $TCC_FOLDER/tcc $TCC_FOLDER/tcc.exe
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date > $TCC_FOLDER/build_on_date.txt
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echo $TCC_COMMIT_FULL_HASH > $TCC_FOLDER/build_source_hash.txt
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$TCC_FOLDER/tcc.exe --version > $TCC_FOLDER/build_version.txt
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uname -a > $TCC_FOLDER/build_machine_uname.txt
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## show the builtin search paths for sanity checking:
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$TCC_FOLDER/tcc.exe -v -v
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echo "tcc commit: $TCC_COMMIT , full hash: $TCC_COMMIT_FULL_HASH . The tcc executable is ready in $TCC_FOLDER/tcc.exe "

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