gcc pass 3

master
phanes 2023-03-09 23:36:47 -05:00
parent 88f65e83e5
commit 1a360bed1a
3 changed files with 315 additions and 0 deletions

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@ -0,0 +1,292 @@
#!/bin/bash
# desc:
# stages, builds, installs
# make variables persist in subprocesses for logging function
set -a
# ----------------------------------------------------------------------
# Configuration:
# ----------------------------------------------------------------------
# the name of this application
APPNAME="gcc"
# the version of this application
VERSION="12.2.0"
# ----------------------------------------------------------------------
# Variables and functions sourced from Environment:
# ----------------------------------------------------------------------
# assert_zero()
# Checks if $1 is 0. If non-0 value, halts the execution of the script.
#
# LOGS_ROOT
# The parent directory where logs from this project will go.
#
# TEMP_STAGE_DIR
# The parent directory of where source archives are extracted to.
# register mode selections
ARGUMENT_LIST=(
"stage"
"build"
"install"
"all"
"help"
)
# modes to associate with switches
# assumes you want nothing done unless you ask for it.
MODE_STAGE=false
MODE_BUILD=false
MODE_INSTALL=false
MODE_ALL=false
MODE_HELP=false
# the file to log to
LOGFILE="${APPNAME}.log"
# ISO 8601 variation
TIMESTAMP="$(date +%Y-%m-%d_%H:%M:%S)"
# the path where logs are written to
# note: LOGS_ROOT is sourced from environment
LOG_DIR="${LOGS_ROOT}/${APPNAME}-${TIMESTAMP}"
# the path where the source will be located when complete
# note: TEMP_STAGE_DIR is sourced from environment
T_SOURCE_DIR="${TEMP_STAGE_DIR}/${APPNAME}"
# read defined arguments
opts=$(getopt \
--longoptions "$(printf "%s," "${ARGUMENT_LIST[@]}")" \
--name "$APPNAME" \
--options "" \
-- "$@"
)
# process supplied arguments into flags that enable execution modes
eval set --$opts
while [[ $# -gt 0 ]]; do
case "$1" in
--stage)
MODE_STAGE=true
shift 1
;;
--build)
MODE_BUILD=true
shift 1
;;
--install)
MODE_INSTALL=true
shift 1
;;
--all)
MODE_ALL=true
shift 1
;;
--help)
MODE_HELP=true
shift 1
;;
*)
break
;;
esac
done
# print to stdout, print to log
logprint() {
mkdir -p "${LOG_DIR}"
echo "[$(date +%Y-%m-%d_%H:%M:%S)] [${APPNAME}] $1" \
| tee -a "${LOG_DIR}/${LOGFILE}"
}
# Tell the user we're alive...
logprint "Initializing the ${APPNAME} utility..."
# when the stage mode is enabled, this will execute
mode_stage() {
logprint "Starting stage of ${APPNAME}..."
logprint "Removing any pre-existing staging for ${APPNAME}."
rm -Rf "${T_SOURCE_DIR}"*
logprint "Extracting ${APPNAME}-${VERSION} source archive to ${TEMP_STAGE_DIR}"
tar xf "${SOURCES_DIR}/${APPNAME}-${VERSION}.tar."* -C "${TEMP_STAGE_DIR}"
assert_zero $?
# conditionally rename if it needs it
stat "${T_SOURCE_DIR}-"* && mv "${T_SOURCE_DIR}-"* "${T_SOURCE_DIR}"
logprint "Staging operation complete."
}
# when the build_pass1 mode is enabled, this will execute
mode_build() {
# patch, configure and build
logprint "Starting build of ${APPNAME}..."
logprint "Entering build dir."
pushd "${T_SOURCE_DIR}"
assert_zero $?
# how many times do you need to compile this until you can use your fucking system?
logprint "GCC PASS 3 PREWORK"
# patches
logprint "Applying patches..."
patch -p0 < "${PATCHES_DIR}/gcc_libarchpath_fhs.patch"
assert_zero $?
mkdir -v build
pushd build
logprint "Configuring ${APPNAME}..."
../configure \
--prefix=/usr \
--enable-languages=c,c++ \
--enable-default-pie \
--enable-default-ssp \
--disable-multilib \
--disable-bootstrap \
--with-system-zlib
assert_zero $?
logprint "Compiling..."
make
assert_zero $?
# TODO this needs rewritten later to configure and compile as test user
# and then test as that user, and then make install as root
logprint "Testing"
make -k check
logprint "Checks exited with '$?'. "
logprint "Test results:"
cat ../contrib/test_summary
logprint "Build operation complete."
}
mode_install() {
logprint "Starting install of ${APPNAME}..."
pushd "${T_SOURCE_DIR}/build"
assert_zero $?
logprint "Installing..."
make install
assert_zero $?
# https://refspecs.linuxfoundation.org/FHS_3.0/fhs/ch03s09.html
logprint "Creating FHS symlink from /usr/bin/cpp -> /usr/lib"
# this is the C preprocessor, see ref 12 on Ch 3 ss 9 of FHS3
ln -svr /usr/bin/cpp /usr/lib
assert_zero $?
logprint "Creating LTO compatibility symlink..."
ln -sfv ../../libexec/gcc/$(gcc -dumpmachine)/${VERSION}/liblto_plugin.so /usr/lib/bfd-plugins/
assert_zero $?
logprint "Checking compilation..."
logprint "Creating dummy.c"
echo 'int main(){}' > dummy.c
assert_zero $?
logprint "Compiling dummy.c with CC"
cc dummy.c -v -Wl,--verbose &> dummy.log
assert_zero $?
logprint "Dumping readelf output of resulting binary:"
readelf -l a.out | grep ': /lib' | grep "interpreter"
assert_zero $?
logprint "Dumping the compilation log:"
# look for {Scrt1.o,crti.o,crtn.o}
# verify the correct header files
# check that the new linker is being used
logprint "look for crt.o's:"
cat dummy.log | grep "succeeded"
assert_zero $?
logprint "look at include paths:"
grep -B4 '^ /usr/include' dummy.log
assert_zero $?
logprint "check linker search paths:"
grep 'SEARCH.*/usr/lib' dummy.log |sed 's|; |\n|g'
assert_zero $?
logprint "Check glibc version:"
grep "/lib.*/libc.so.6 " dummy.log
assert_zero $?
logprint "Check that the correct dynamic linker is being used:"
grep found dummy.log
assert_zero $?
logprint "Cleaning up...."
rm -v dummy.c a.out dummy.log
assert_zero $?
mkdir -pv /usr/share/gdb/auto-load/usr/lib
assert_zero $?
mv -v /usr/lib/*gdb.py /usr/share/gdb/auto-load/usr/lib
assert_zero $?
logprint "Install operation complete."
}
mode_help() {
echo "${APPNAME} [ --stage ] [ --build_temp ] [ --install_temp ] [ --all_temp ] [ --help ]"
exit 1
}
if [ "$MODE_ALL" = "true" ]; then
MODE_STAGE=true
MODE_BUILD=true
MODE_INSTALL=true
fi
# if no options were selected, then show help and exit
if \
[ "$MODE_HELP" != "true" ] && \
[ "$MODE_STAGE" != "true" ] && \
[ "$MODE_BUILD" != "true" ] && \
[ "$MODE_INSTALL" != "true" ]
then
logprint "No option selected during execution."
mode_help
fi
# if help was supplied at all, show help and exit
if [ "$MODE_HELP" = "true" ]; then
logprint "Help option selected. Printing options and exiting."
mode_help
fi
if [ "$MODE_STAGE" = "true" ]; then
logprint "Staging option selected."
mode_stage
assert_zero $?
fi
if [ "$MODE_BUILD" = "true" ]; then
logprint "Build of ${APPNAME} selected."
mode_build
assert_zero $?
fi
if [ "$MODE_INSTALL" = "true" ]; then
logprint "Install of ${APPNAME} selected."
mode_install
assert_zero $?
fi
logprint "Execution of ${APPNAME} completed."

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@ -120,6 +120,11 @@
"name": "shadow",
"dependencies": [ null ],
"comment": "LFS 11.3-systemd-rc1 Ch. 8.25"
},
{
"name": "gcc pass 3",
"dependencies": [ null ],
"comment": "LFS 11.3-systemd-rc1 Ch. 8.26 -- endlessly fucking with compilers forever"
}
]
}

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@ -431,6 +431,24 @@
"group": "root",
"supply_environment": true,
"environment": "environments/stage4.env.bash"
},
{
"name": "gcc pass 3",
"target": "components/stage4/gcc.bash --all",
"is_shell_command": true,
"shell_definition": "bash",
"force_pty": true,
"set_working_directory": false,
"working_directory": "",
"rectify": false,
"rectifier": "",
"active": true,
"required": true,
"set_user_context": true,
"user": "root",
"group": "root",
"supply_environment": true,
"environment": "environments/stage4.env.bash"
}
]
}