thirdparty: add thirdparty/build_scripts/thirdparty-openbsd-amd64_tcc.sh for compiling tcc on OpenBSD (#24592)

thirdparty/build_scripts/thirdparty-openbsd-amd64_tcc.sh

@@ -0,0 +1,90 @@
+## NOTE: this script does *not* use a shebang **deliberately**, in order to
+## access the same shell, to capture its own launching command with `fc`,
+## and to record it later in the new commit message in thirdpart/tcc.
+
+## WARNING: THE ORIGINAL OF THIS SCRIPT IS IN:
+## https://github.com/vlang/v/blob/master/thirdparty/build_scripts/thirdparty-openbsd-amd64_tcc.sh ,
+## I.E. IN THE MAIN V REPOSITORY. IF YOU NEED TO MAKE CHANGES, CHANGE THAT.
+##
+## THE `build.sh` FILE IN `vlang/tccbin` REPO IS A COPY, RECORDED AT THE TIME
+## OF REBUILDING, FOR EASIER/RELIABLE REPRODUCTION OF HISTORIC VERSIONS.
+## IT IS NOT INTENDED TO BE MODIFIED.
+
+BUILD_CMD=`fc -nl -0`
+## remove whitespaces before/after the actual command:
+BUILD_CMD="$(echo "${BUILD_CMD}" | sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//')"
+
+set -e
+
+if ! test -f vlib/v/compiler_errors_test.v; then
+  echo "this script should be run in V's main repo folder!"
+  exit 1
+fi
+
+export CFLAGS='-O3'
+export CURRENT_SCRIPT_PATH=$(realpath "$0")
+
+export TCC_COMMIT="${TCC_COMMIT:-mob}"
+export TCC_FOLDER="${TCC_FOLDER:-thirdparty/tcc.$TCC_COMMIT}"
+export CC="${CC:-clang}"
+
+echo " BUILD_CMD: \`$BUILD_CMD\`"
+echo "        CC: $CC"
+echo "TCC_COMMIT: $TCC_COMMIT"
+echo "TCC_FOLDER: \`$TCC_FOLDER\`"
+echo ===============================================================
+
+rm -rf tinycc/
+rm -rf thirdparty/tcc.original/
+rsync -a thirdparty/tcc/ thirdparty/tcc.original/
+
+pushd .
+
+git clone git://repo.or.cz/tinycc.git
+
+cd tinycc
+
+git checkout $TCC_COMMIT
+export TCC_COMMIT_FULL_HASH=$(git rev-parse HEAD)
+
+./configure \
+            --prefix=$TCC_FOLDER \
+            --bindir=$TCC_FOLDER \
+            --crtprefix=$TCC_FOLDER/lib:/usr/lib \
+            --sysincludepaths=$TCC_FOLDER/lib/tcc/include:/usr/local/include:/usr/include \
+            --libpaths=$TCC_FOLDER/lib/tcc:$TCC_FOLDER/lib:/usr/lib:/usr/local/lib \
+            --cc="$CC" \
+            --extra-cflags="$CFLAGS" \
+            --config-backtrace=yes \
+            --config-bcheck=yes \
+            --debug
+
+gmake
+gmake install
+
+popd
+
+rsync -a --delete tinycc/$TCC_FOLDER/                 $TCC_FOLDER/
+rsync -a          thirdparty/tcc.original/.git/       $TCC_FOLDER/.git/
+# rsync -a          thirdparty/tcc.original/lib/libgc*  $TCC_FOLDER/lib/
+rsync -a          thirdparty/tcc.original/lib/build*  $TCC_FOLDER/lib/
+rsync -a          thirdparty/tcc.original/README.md   $TCC_FOLDER/README.md
+rsync -a          $CURRENT_SCRIPT_PATH                $TCC_FOLDER/build.sh
+mv                $TCC_FOLDER/tcc                     $TCC_FOLDER/tcc.exe
+
+date                                                > $TCC_FOLDER/build_on_date.txt
+echo $TCC_COMMIT_FULL_HASH                          > $TCC_FOLDER/build_source_hash.txt
+$TCC_FOLDER/tcc.exe --version                       > $TCC_FOLDER/build_version.txt
+uname -a                                            > $TCC_FOLDER/build_machine_uname.txt
+
+## show the builtin search paths for sanity checking:
+$TCC_FOLDER/tcc.exe -v -v
+
+pushd .
+cd $TCC_FOLDER
+git add .
+git commit -m "build with \`$BUILD_CMD\`"
+popd
+
+echo "tcc commit: $TCC_COMMIT , full hash: $TCC_COMMIT_FULL_HASH ."
+echo "The tcc executable is ready in $TCC_FOLDER/tcc.exe"