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ci_build.sh
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#!/usr/bin/env bash
################################################################################
# This file is based on a template used by zproject, but isn't auto-generated. #
# Its primary use is to automate a number of BUILD_TYPE scenarios for the NUT #
# CI farm, but for the same reason it can also be useful to reduce typing for #
# reproducible build attempts with NUT development and refactoring workflows. #
# Note that it is driven by enviroment variables rather than CLI arguments -- #
# this approach better suits the practicalities of CI build farm technologies. #
################################################################################
set -e
# Quick hijack for interactive development like this:
# BUILD_TYPE=fightwarn-clang ./ci_build.sh
# or to quickly hit the first-found errors in a larger matrix
# (and then easily `make` to iterate fixes), like this:
# CI_REQUIRE_GOOD_GITIGNORE="false" CI_FAILFAST=true DO_CLEAN_CHECK=no BUILD_TYPE=fightwarn ./ci_build.sh
case "$BUILD_TYPE" in
fightwarn) ;; # for default compiler
fightwarn-gcc)
CC="gcc"
CXX="g++"
CPP="cpp"
BUILD_TYPE=fightwarn
;;
fightwarn-clang)
CC="clang"
CXX="clang++"
CPP="clang-cpp"
BUILD_TYPE=fightwarn
;;
esac
if [ "$BUILD_TYPE" = fightwarn ]; then
# For CFLAGS/CXXFLAGS keep caller or compiler defaults
# (including C/C++ revision)
BUILD_TYPE=default-all-errors
BUILD_WARNFATAL=yes
# Current fightwarn goal is to have no warnings at preset level below:
#[ -n "$BUILD_WARNOPT" ] || BUILD_WARNOPT=hard
[ -n "$BUILD_WARNOPT" ] || BUILD_WARNOPT=medium
# Eventually this constraint would be removed to check all present
# SSL implementations since their ifdef-driven codebases differ and
# emit varied warnings. But so far would be nice to get the majority
# of shared codebase clean first:
[ -n "$NUT_SSL_VARIANTS" ] || NUT_SSL_VARIANTS=auto
# Similarly for libusb implementations with varying support
[ -n "$NUT_USB_VARIANTS" ] || NUT_USB_VARIANTS=auto
fi
# Set this to enable verbose profiling
[ -n "${CI_TIME-}" ] || CI_TIME=""
case "$CI_TIME" in
[Yy][Ee][Ss]|[Oo][Nn]|[Tt][Rr][Uu][Ee])
CI_TIME="time -p " ;;
[Nn][Oo]|[Oo][Ff][Ff]|[Ff][Aa][Ll][Ss][Ee])
CI_TIME="" ;;
esac
# Set this to enable verbose tracing
[ -n "${CI_TRACE-}" ] || CI_TRACE="no"
case "$CI_TRACE" in
[Nn][Oo]|[Oo][Ff][Ff]|[Ff][Aa][Ll][Ss][Ee])
set +x ;;
[Yy][Ee][Ss]|[Oo][Nn]|[Tt][Rr][Uu][Ee])
set -x ;;
esac
[ -n "${CI_REQUIRE_GOOD_GITIGNORE-}" ] || CI_REQUIRE_GOOD_GITIGNORE="true"
case "$CI_REQUIRE_GOOD_GITIGNORE" in
[Nn][Oo]|[Oo][Ff][Ff]|[Ff][Aa][Ll][Ss][Ee])
CI_REQUIRE_GOOD_GITIGNORE="false" ;;
[Yy][Ee][Ss]|[Oo][Nn]|[Tt][Rr][Uu][Ee])
CI_REQUIRE_GOOD_GITIGNORE="true" ;;
esac
# Abort loops like BUILD_TYPE=default-all-errors as soon as we have a problem
# (allowing to rebuild interactively and investigate that set-up)?
[ -n "${CI_FAILFAST-}" ] || CI_FAILFAST=false
[ -n "$MAKE" ] || MAKE=make
[ -n "$GGREP" ] || GGREP=grep
[ -n "$MAKE_FLAGS_QUIET" ] || MAKE_FLAGS_QUIET="VERBOSE=0 V=0 -s"
[ -n "$MAKE_FLAGS_VERBOSE" ] || MAKE_FLAGS_VERBOSE="VERBOSE=1 -s"
# For two-phase builds (quick parallel make first, sequential retry if failed)
# how verbose should that first phase be? Nothing, automake list of ops, CLIs?
# See build_to_only_catch_errors_target() for a consumer of this setting.
case "${CI_PARMAKE_VERBOSITY-}" in
silent|quiet|verbose|default) ;;
*) CI_PARMAKE_VERBOSITY=silent ;;
esac
# Set up the parallel make with reasonable limits, using several ways to
# gather and calculate this information. Note that "psrinfo" count is not
# an honest approach (there may be limits of current CPU set etc.) but is
# a better upper bound than nothing...
[ -n "$NCPUS" ] || { \
NCPUS="`/usr/bin/getconf _NPROCESSORS_ONLN`" || \
NCPUS="`/usr/bin/getconf NPROCESSORS_ONLN`" || \
NCPUS="`cat /proc/cpuinfo | grep -wc processor`" || \
{ [ -x /usr/sbin/psrinfo ] && NCPUS="`/usr/sbin/psrinfo | wc -l`"; } \
|| NCPUS=1; } 2>/dev/null
[ x"$NCPUS" != x -a "$NCPUS" -ge 1 ] || NCPUS=1
[ x"$NPARMAKES" = x ] && { NPARMAKES="`expr "$NCPUS" '*' 2`" || NPARMAKES=2; }
[ x"$NPARMAKES" != x -a "$NPARMAKES" -ge 1 ] || NPARMAKES=2
[ x"$MAXPARMAKES" != x ] && [ "$MAXPARMAKES" -ge 1 ] && \
[ "$NPARMAKES" -gt "$MAXPARMAKES" ] && \
echo "INFO: Detected or requested NPARMAKES=$NPARMAKES," \
"however a limit of MAXPARMAKES=$MAXPARMAKES was configured" && \
NPARMAKES="$MAXPARMAKES"
# GNU make allows to limit spawning of jobs by load average of the host,
# where LA is (roughly) the average amount over the last {timeframe} of
# queued processes that are ready to compute but must wait for CPU.
# The rough estimate for VM builders however seems that they always have
# some non-trivial LA, so we set the default limit per CPU relatively high.
[ x"$PARMAKE_LA_LIMIT" = x ] && PARMAKE_LA_LIMIT="`expr $NCPUS '*' 8`".0
# After all the tunable options above, this is the one which takes effect
# for actual builds with parallel phases. Specify a whitespace to neuter.
if [ -z "$PARMAKE_FLAGS" ]; then
PARMAKE_FLAGS="-j $NPARMAKES"
if LANG=C LC_ALL=C "$MAKE" --version 2>&1 | egrep 'GNU Make|Free Software Foundation' > /dev/null ; then
PARMAKE_FLAGS="$PARMAKE_FLAGS -l $PARMAKE_LA_LIMIT"
echo "Parallel builds would spawn up to $NPARMAKES jobs (detected $NCPUS CPUs), or peak out at $PARMAKE_LA_LIMIT system load average" >&2
else
echo "Parallel builds would spawn up to $NPARMAKES jobs (detected $NCPUS CPUs)" >&2
fi
fi
# CI builds on Jenkins
[ -z "$NODE_LABELS" ] || \
for L in $NODE_LABELS ; do
case "$L" in
"NUT_BUILD_CAPS=cppunit=no")
[ -n "$CANBUILD_CPPUNIT_TESTS" ] || CANBUILD_CPPUNIT_TESTS=no ;;
"NUT_BUILD_CAPS=cppunit=no-gcc")
[ -n "$CANBUILD_CPPUNIT_TESTS" ] || CANBUILD_CPPUNIT_TESTS=no-gcc ;;
"NUT_BUILD_CAPS=cppunit=no-clang")
[ -n "$CANBUILD_CPPUNIT_TESTS" ] || CANBUILD_CPPUNIT_TESTS=no-clang ;;
"NUT_BUILD_CAPS=cppunit"|"NUT_BUILD_CAPS=cppunit=yes")
[ -n "$CANBUILD_CPPUNIT_TESTS" ] || CANBUILD_CPPUNIT_TESTS=yes ;;
# Some (QEMU) builders have issues running valgrind as a tool
"NUT_BUILD_CAPS=valgrind=no")
[ -n "$CANBUILD_VALGRIND_TESTS" ] || CANBUILD_VALGRIND_TESTS=no ;;
"NUT_BUILD_CAPS=valgrind"|"NUT_BUILD_CAPS=valgrind=yes")
[ -n "$CANBUILD_VALGRIND_TESTS" ] || CANBUILD_VALGRIND_TESTS=yes ;;
"NUT_BUILD_CAPS=cppcheck=no")
[ -n "$CANBUILD_CPPCHECK_TESTS" ] || CANBUILD_CPPCHECK_TESTS=no ;;
"NUT_BUILD_CAPS=cppcheck"|"NUT_BUILD_CAPS=cppcheck=yes")
[ -n "$CANBUILD_CPPCHECK_TESTS" ] || CANBUILD_CPPCHECK_TESTS=yes ;;
"NUT_BUILD_CAPS=docs:man=no")
[ -n "$CANBUILD_DOCS_MAN" ] || CANBUILD_DOCS_MAN=no ;;
"NUT_BUILD_CAPS=docs:man"|"NUT_BUILD_CAPS=docs:man=yes")
[ -n "$CANBUILD_DOCS_MAN" ] || CANBUILD_DOCS_MAN=yes ;;
"NUT_BUILD_CAPS=docs:all=no")
[ -n "$CANBUILD_DOCS_ALL" ] || CANBUILD_DOCS_ALL=no ;;
"NUT_BUILD_CAPS=docs:all"|"NUT_BUILD_CAPS=docs:all=yes")
[ -n "$CANBUILD_DOCS_ALL" ] || CANBUILD_DOCS_ALL=yes ;;
"NUT_BUILD_CAPS=drivers:all=no")
[ -n "$CANBUILD_DRIVERS_ALL" ] || CANBUILD_DRIVERS_ALL=no ;;
"NUT_BUILD_CAPS=drivers:all"|"NUT_BUILD_CAPS=drivers:all=yes")
[ -n "$CANBUILD_DRIVERS_ALL" ] || CANBUILD_DRIVERS_ALL=yes ;;
"NUT_BUILD_CAPS=cgi=no")
[ -n "$CANBUILD_LIBGD_CGI" ] || CANBUILD_LIBGD_CGI=no ;;
"NUT_BUILD_CAPS=cgi"|"NUT_BUILD_CAPS=cgi=yes")
[ -n "$CANBUILD_LIBGD_CGI" ] || CANBUILD_LIBGD_CGI=yes ;;
esac
done
if [ -z "$CI_OS_NAME" ]; then
# Check for dynaMatrix node labels support and map into a simple
# classification styled after (compatible with) that in Travis CI
for CI_OS_HINT in "$OS_FAMILY-$OS_DISTRO" "`uname -o`" "`uname -s -r -v`" "`uname -a`" ; do
[ -z "$CI_OS_HINT" -o "$CI_OS_HINT" = "-" ] || break
done
case "`echo "$CI_OS_HINT" | tr 'A-Z' 'a-z'`" in
*freebsd*)
CI_OS_NAME="freebsd" ;;
*debian*|*linux*)
CI_OS_NAME="debian" ;;
*windows*)
CI_OS_NAME="windows" ;;
*[Mm]ac*|*arwin*|*[Oo][Ss][Xx]*)
CI_OS_NAME="osx" ;;
*openindiana*)
CI_OS_NAME="openindiana" ;;
*omnios*)
CI_OS_NAME="omnios" ;;
*bsd*)
CI_OS_NAME="bsd" ;;
*illumos*)
CI_OS_NAME="illumos" ;;
*solaris*)
CI_OS_NAME="solaris" ;;
*sunos*)
CI_OS_NAME="sunos" ;;
"-") ;;
*) echo "WARNING: Could not recognize CI_OS_NAME from CI_OS_HINT='$CI_OS_HINT', update './ci_build.sh' if needed" >&2
if [ "$OS_FAMILY-$OS_DISTRO" != "-" ]; then
echo "WARNING: I was told that OS_FAMILY='$OS_FAMILY' and OS_DISTRO='$OS_DISTRO'" >&2
fi
;;
esac
[ -z "$CI_OS_NAME" ] || echo "INFO: Detected CI_OS_NAME='$CI_OS_NAME'" >&2
fi
# CI builds on Travis
[ -n "$CI_OS_NAME" ] || CI_OS_NAME="$TRAVIS_OS_NAME"
# Analyze some environmental choices
if [ -z "${CANBUILD_LIBGD_CGI-}" ]; then
# No prereq dll and headers on win so far
[[ "$CI_OS_NAME" = "windows" ]] && CANBUILD_LIBGD_CGI=no
# NUT CI farm with Jenkins can build it; Travis could not
[[ "$CI_OS_NAME" = "freebsd" ]] && CANBUILD_LIBGD_CGI=yes \
|| [[ "$TRAVIS_OS_NAME" = "freebsd" ]] && CANBUILD_LIBGD_CGI=no
# See also below for some compiler-dependent decisions
fi
configure_nut() {
local CONFIGURE_SCRIPT=./configure
if [[ "$CI_OS_NAME" == "windows" ]] ; then
find . -ls
CONFIGURE_SCRIPT=./configure.bat
fi
if [ ! -s "$CONFIGURE_SCRIPT" ]; then
# Note: modern auto(re)conf requires pkg-config to generate the configure
# script, so to stage the situation of building without one (as if on an
# older system) we have to remove it when we already have the script.
# This matches the use-case of distro-building from release tarballs that
# include all needed pre-generated files to rely less on OS facilities.
if [ "$CI_OS_NAME" = "windows" ] ; then
$CI_TIME ./autogen.sh || true
else
$CI_TIME ./autogen.sh ### 2>/dev/null
fi || exit
fi
# Help copy-pasting build setups from CI logs to terminal:
local CONFIG_OPTS_STR="`for F in "${CONFIG_OPTS[@]}" ; do echo "'$F' " ; done`" ### | tr '\n' ' '`"
while : ; do # Note the CI_SHELL_IS_FLAKY=true support below
echo "=== CONFIGURING NUT: $CONFIGURE_SCRIPT ${CONFIG_OPTS_STR}"
echo "=== CC='$CC' CXX='$CXX' CPP='$CPP'"
[ -z "${CI_SHELL_IS_FLAKY-}" ] || echo "=== CI_SHELL_IS_FLAKY='$CI_SHELL_IS_FLAKY'"
$CI_TIME $CONFIGURE_SCRIPT "${CONFIG_OPTS[@]}" \
&& return 0 \
|| { RES_CFG=$?
echo "FAILED ($RES_CFG) to configure nut, will dump config.log in a second to help troubleshoot CI" >&2
echo " (or press Ctrl+C to abort now if running interactively)" >&2
sleep 5
echo "=========== DUMPING config.log :"
$GGREP -B 100 -A 1 'Cache variables' config.log 2>/dev/null \
|| cat config.log || true
echo "=========== END OF config.log"
if [ "${CI_SHELL_IS_FLAKY-}" = true ]; then
# Real-life story from the trenches: there are weird systems
# which fail ./configure in random spots not due to script's
# quality. Then we'd just loop here.
echo "WOULD BE FATAL: FAILED ($RES_CFG) to ./configure ${CONFIG_OPTS[*]} -- but asked to loop trying" >&2
else
echo "FATAL: FAILED ($RES_CFG) to ./configure ${CONFIG_OPTS[*]}" >&2
echo "If you are sure this is not a fault of scripting or config option, try" >&2
echo " CI_SHELL_IS_FLAKY=true $0"
exit $RES_CFG
fi
}
done
}
build_to_only_catch_errors_target() {
if [ $# = 0 ]; then
build_to_only_catch_errors_target all ; return $?
fi
# Sub-shells to avoid crashing with "unhandled" faults in "set -e" mode:
( echo "`date`: Starting the parallel build attempt (quietly to build what we can) for '$@' ..."; \
( case "${CI_PARMAKE_VERBOSITY}" in
silent)
# Note: stderr would still expose errors and warnings (needed for
# e.g. CI analysis of coding issues, even if not treated as fatal)
$CI_TIME $MAKE $MAKE_FLAGS_QUIET -k $PARMAKE_FLAGS "$@" >/dev/null ;;
quiet)
$CI_TIME $MAKE $MAKE_FLAGS_QUIET -k $PARMAKE_FLAGS "$@" ;;
silent)
$CI_TIME $MAKE $MAKE_FLAGS_VERBOSE -k $PARMAKE_FLAGS "$@" ;;
default)
$CI_TIME $MAKE -k $PARMAKE_FLAGS "$@" ;;
esac ) && echo "`date`: SUCCESS" ; ) || \
( echo "`date`: Starting the sequential build attempt (to list remaining files with errors considered fatal for this build configuration) for '$@'..."; \
$CI_TIME $MAKE $MAKE_FLAGS_VERBOSE "$@" -k ) || return $?
return 0
}
build_to_only_catch_errors() {
build_to_only_catch_errors_target all || return $?
echo "`date`: Starting a '$MAKE check' for quick sanity test of the products built with the current compiler and standards"
$CI_TIME $MAKE $MAKE_FLAGS_QUIET check \
&& echo "`date`: SUCCESS" \
|| return $?
return 0
}
ccache_stats() {
local WHEN="$1"
[ -n "$WHEN" ] || WHEN="some time around the"
if [ "$HAVE_CCACHE" = yes ]; then
if [ -d "$CCACHE_DIR" ]; then
echo "CCache stats $WHEN build:"
ccache -s || true
else
echo "WARNING: CCache stats $WHEN build: tool is enabled, but CCACHE_DIR='$CCACHE_DIR' was not found now" >&2
fi
fi
return 0
}
check_gitignore() {
# Optional envvars from caller: FILE_DESCR FILE_REGEX FILE_GLOB
# and GIT_ARGS GIT_DIFF_SHOW
local BUILT_TARGETS="$@"
[ -n "${FILE_DESCR-}" ] || FILE_DESCR="some"
# Note: regex actually used starts with catching Git markup, so
# FILE_REGEX should not include that nor "^" line-start marker.
# We also rule out files made by CI routines and this script.
# NOTEL: In particular, we need build results of `make cppcheck`
# later, so its recipe does not clean nor care for gitignore.
[ -n "${FILE_REGEX-}" ] || FILE_REGEX='.*'
# Shell-glob filename pattern for points of interest to git status
# and git diff; note that filenames starting with a dot should be
# reported by `git status -- '*'` and not hidden.
[ -n "${FILE_GLOB-}" ] || FILE_GLOB='*'
[ -n "${GIT_ARGS-}" ] || GIT_ARGS='' # e.g. GIT_ARGS="--ignored"
# Display contents of the diff?
# (Helps copy-paste from CI logs to source to amend quickly)
[ -n "${GIT_DIFF_SHOW-}" ] || GIT_DIFF_SHOW=true
[ -n "${BUILT_TARGETS-}" ] || BUILT_TARGETS="all? (usual default)"
echo "=== Are GitIgnores good after '$MAKE $BUILT_TARGETS'? (should have no output below)"
if [ ! -e .git ]; then
echo "WARNING: Skipping the GitIgnores check after '$BUILT_TARGETS' because there is no `pwd`/.git anymore" >&2
return 0
fi
# One invocation should report to log:
git status $GIT_ARGS -s -- "${FILE_GLOB}" \
| egrep -v '^.. \.ci.*\.log.*' \
| egrep "${FILE_REGEX}" \
|| echo "WARNING: Could not query git repo while in `pwd`" >&2
echo "==="
# Another invocation checks that there was nothing to complain about:
if [ -n "`git status $GIT_ARGS -s "${FILE_GLOB}" | egrep -v '^.. \.ci.*\.log.*' | egrep "^.. ${FILE_REGEX}"`" ] \
&& [ "$CI_REQUIRE_GOOD_GITIGNORE" != false ] \
; then
echo "FATAL: There are changes in $FILE_DESCR files listed above - tracked sources should be updated in the PR (even if generated - not all builders can do so), and build products should be added to a .gitignore file, everything made should be cleaned and no tracked files should be removed!" >&2
if [ "$GIT_DIFF_SHOW" = true ]; then
git diff -- "${FILE_GLOB}" || true
fi
echo "==="
return 1
fi
return 0
}
can_clean_check() {
if [ "${DO_CLEAN_CHECK-}" = "no" ] ; then
# NOTE: Not handling here particular DO_MAINTAINER_CLEAN_CHECK or DO_DIST_CLEAN_CHECK
return 1
fi
if [ -s Makefile ] && [ -e .git ] ; then
return 0
fi
return 1
}
optional_maintainer_clean_check() {
if [ ! -e .git ]; then
echo "Skipping maintainer-clean check because there is no .git" >&2
return 0
fi
if [ ! -e Makefile ]; then
echo "WARNING: Skipping maintainer-clean check because there is no Makefile (did we clean in a loop earlier?)" >&2
return 0
fi
if [ "${DO_CLEAN_CHECK-}" = "no" ] || [ "${DO_MAINTAINER_CLEAN_CHECK-}" = "no" ] ; then
echo "Skipping maintainer-clean check because recipe/developer said so"
else
[ -z "$CI_TIME" ] || echo "`date`: Starting maintainer-clean check of currently tested project..."
# Note: currently Makefile.am has just a dummy "distcleancheck" rule
$CI_TIME $MAKE DISTCHECK_FLAGS="$DISTCHECK_FLAGS" $PARMAKE_FLAGS maintainer-clean || return
GIT_ARGS="--ignored" check_gitignore "maintainer-clean" || return
fi
return 0
}
optional_dist_clean_check() {
if [ ! -e .git ]; then
echo "Skipping distclean check because there is no .git" >&2
return 0
fi
if [ ! -e Makefile ]; then
echo "WARNING: Skipping distclean check because there is no Makefile (did we clean in a loop earlier?)" >&2
return 0
fi
if [ "${DO_CLEAN_CHECK-}" = "no" ] || [ "${DO_DIST_CLEAN_CHECK-}" = "no" ] ; then
echo "Skipping distclean check because recipe/developer said so"
else
[ -z "$CI_TIME" ] || echo "`date`: Starting dist-clean check of currently tested project..."
# Note: currently Makefile.am has just a dummy "distcleancheck" rule
$CI_TIME $MAKE DISTCHECK_FLAGS="$DISTCHECK_FLAGS" $PARMAKE_FLAGS distclean || return
check_gitignore "distclean" || return
fi
return 0
}
if [ "$1" = spellcheck ] && [ -z "$BUILD_TYPE" ] ; then
# Note: this is a little hack to reduce typing
# and scrolling in (docs) developer iterations.
if [ -s Makefile ] && [ -s docs/Makefile ]; then
echo "Processing quick and quiet spellcheck with already existing recipe files, will only report errors if any ..."
build_to_only_catch_errors_target spellcheck ; exit
else
BUILD_TYPE="default-spellcheck"
shift
fi
fi
echo "Processing BUILD_TYPE='${BUILD_TYPE}' ..."
echo "Build host settings:"
set | egrep '^(CI_.*|CANBUILD_.*|NODE_LABELS|MAKE|C.*FLAGS|LDFLAGS|CC|CXX|DO_.*|BUILD_.*)=' || true
uname -a
echo "LONG_BIT:`getconf LONG_BIT` WORD_BIT:`getconf WORD_BIT`" || true
if command -v xxd >/dev/null ; then xxd -c 1 -l 6 | tail -1; else if command -v od >/dev/null; then od -N 1 -j 5 -b | head -1 ; else hexdump -s 5 -n 1 -C | head -1; fi; fi < /bin/ls 2>/dev/null | awk '($2 == 1){print "Endianness: LE"}; ($2 == 2){print "Endianness: BE"}' || true
case "$BUILD_TYPE" in
default|default-alldrv|default-alldrv:no-distcheck|default-all-errors|default-spellcheck|default-shellcheck|default-nodoc|default-withdoc|default-withdoc:man|"default-tgt:"*)
LANG=C
LC_ALL=C
export LANG LC_ALL
if [ -d "./tmp/" ]; then
rm -rf ./tmp/
fi
if [ -d "./.inst/" ]; then
rm -rf ./.inst/
fi
mkdir -p tmp/ .inst/
BUILD_PREFIX="$PWD/tmp"
INST_PREFIX="$PWD/.inst"
echo "PATH='$PATH' before possibly applying CCACHE into the mix"
( echo "$PATH" | grep ccache ) >/dev/null && echo "WARNING: ccache is already in PATH"
if [ -n "$CC" ]; then
echo "CC='$CC' before possibly applying CCACHE into the mix"
$CC --version $CFLAGS || \
$CC --version || true
fi
if [ -n "$CXX" ]; then
echo "CXX='$CXX' before possibly applying CCACHE into the mix"
$CXX --version $CXXFLAGS || \
$CXX --version || true
fi
PATH="`echo "$PATH" | sed -e 's,^/usr/lib/ccache/?:,,' -e 's,:/usr/lib/ccache/?:,,' -e 's,:/usr/lib/ccache/?$,,' -e 's,^/usr/lib/ccache/?$,,'`"
CCACHE_PATH="$PATH"
CCACHE_DIR="${HOME}/.ccache"
export CCACHE_PATH CCACHE_DIR PATH
HAVE_CCACHE=no
if (command -v ccache || which ccache) && ls -la /usr/lib/ccache ; then
HAVE_CCACHE=yes
fi
mkdir -p "${CCACHE_DIR}"/ || HAVE_CCACHE=no
ccache_stats "before"
CONFIG_OPTS=()
COMMON_CFLAGS=""
EXTRA_CFLAGS=""
EXTRA_CPPFLAGS=""
EXTRA_CXXFLAGS=""
is_gnucc() {
if [ -n "$1" ] && "$1" --version 2>&1 | grep 'Free Software Foundation' > /dev/null ; then true ; else false ; fi
}
is_clang() {
if [ -n "$1" ] && "$1" --version 2>&1 | grep 'clang version' > /dev/null ; then true ; else false ; fi
}
COMPILER_FAMILY=""
if [ -n "$CC" -a -n "$CXX" ]; then
if is_gnucc "$CC" && is_gnucc "$CXX" ; then
COMPILER_FAMILY="GCC"
export CC CXX
elif is_clang "$CC" && is_clang "$CXX" ; then
COMPILER_FAMILY="CLANG"
export CC CXX
fi
else
if is_gnucc "gcc" && is_gnucc "g++" ; then
# Autoconf would pick this by default
COMPILER_FAMILY="GCC"
[ -n "$CC" ] || CC=gcc
[ -n "$CXX" ] || CXX=g++
export CC CXX
elif is_gnucc "cc" && is_gnucc "c++" ; then
COMPILER_FAMILY="GCC"
[ -n "$CC" ] || CC=cc
[ -n "$CXX" ] || CXX=c++
export CC CXX
elif is_clang "clang" && is_clang "clang++" ; then
# Autoconf would pick this by default
COMPILER_FAMILY="CLANG"
[ -n "$CC" ] || CC=clang
[ -n "$CXX" ] || CXX=clang++
export CC CXX
elif is_clang "cc" && is_clang "c++" ; then
COMPILER_FAMILY="CLANG"
[ -n "$CC" ] || CC=cc
[ -n "$CXX" ] || CXX=c++
export CC CXX
fi
fi
if [ -n "$CPP" ] ; then
[ -x "$CPP" ] && export CPP
else
if is_gnucc "cpp" ; then
CPP=cpp && export CPP
fi
fi
if [ -z "${CANBUILD_LIBGD_CGI-}" ]; then
if [[ "$CI_OS_NAME" = "openindiana" ]] ; then
# For some reason, here gcc-4.x (4.4.4, 4.9) have a problem with
# configure-time checks of libgd; newer compilers fare okay.
# Feel free to revise this if the distro packages are fixed
# (or the way configure script and further build uses them).
# UPDATE: Per https://github.com/networkupstools/nut/pull/1089
# This is a systems issue (in current OpenIndiana 2021.04 built
# with a newer GCC version, the older GCC is not ABI compatible
# with the libgd shared object file). Maybe this warrants later
# caring about not just the CI_OS_NAME but also CI_OS_RELEASE...
if [[ "$COMPILER_FAMILY" = "GCC" ]]; then
case "`LANG=C $CC --version | head -1`" in
*[\ -][01234].*)
echo "WARNING: Seems we are running with gcc-4.x or older on $CI_OS_NAME, which last had known issues with libgd; disabling CGI for this build"
CANBUILD_LIBGD_CGI=no
;;
esac
fi
fi
fi
# Note: Potentially there can be spaces in entries for multiple
# *FLAGS here; this should be okay as long as entry expands to
# one token when calling shell (may not be the case for distcheck)
CONFIG_OPTS+=("CFLAGS=-I${BUILD_PREFIX}/include ${CFLAGS}")
CONFIG_OPTS+=("CPPFLAGS=-I${BUILD_PREFIX}/include ${CPPFLAGS}")
CONFIG_OPTS+=("CXXFLAGS=-I${BUILD_PREFIX}/include ${CXXFLAGS}")
CONFIG_OPTS+=("LDFLAGS=-L${BUILD_PREFIX}/lib ${LDFLAGS}")
DEFAULT_PKG_CONFIG_PATH="${BUILD_PREFIX}/lib/pkgconfig"
SYSPKG_CONFIG_PATH="" # Let the OS guess... usually
case "`echo "$CI_OS_NAME" | tr 'A-Z' 'a-z'`" in
*openindiana*|*omnios*|*solaris*|*illumos*|*sunos*)
case "$CC$CXX$CFLAGS$CXXFLAGS$LDFLAGS" in
*-m64*)
SYS_PKG_CONFIG_PATH="/usr/lib/64/pkgconfig:/usr/lib/amd64/pkgconfig:/usr/lib/sparcv9/pkgconfig:/usr/lib/pkgconfig"
;;
*-m32*)
SYS_PKG_CONFIG_PATH="/usr/lib/32/pkgconfig:/usr/lib/pkgconfig:/usr/lib/i86pc/pkgconfig:/usr/lib/i386/pkgconfig:/usr/lib/sparcv7/pkgconfig"
;;
*)
case "$ARCH$BITS" in
*64*)
SYS_PKG_CONFIG_PATH="/usr/lib/64/pkgconfig:/usr/lib/amd64/pkgconfig:/usr/lib/sparcv9/pkgconfig:/usr/lib/pkgconfig"
;;
*32*)
SYS_PKG_CONFIG_PATH="/usr/lib/32/pkgconfig:/usr/lib/pkgconfig:/usr/lib/i86pc/pkgconfig:/usr/lib/i386/pkgconfig:/usr/lib/sparcv7/pkgconfig"
;;
esac
;;
esac
;;
esac
if [ -n "$SYS_PKG_CONFIG_PATH" ] ; then
if [ -n "$PKG_CONFIG_PATH" ] ; then
PKG_CONFIG_PATH="$SYS_PKG_CONFIG_PATH:$PKG_CONFIG_PATH"
else
PKG_CONFIG_PATH="$SYS_PKG_CONFIG_PATH"
fi
fi
if [ -n "$PKG_CONFIG_PATH" ] ; then
CONFIG_OPTS+=("PKG_CONFIG_PATH=${DEFAULT_PKG_CONFIG_PATH}:${PKG_CONFIG_PATH}")
else
CONFIG_OPTS+=("PKG_CONFIG_PATH=${DEFAULT_PKG_CONFIG_PATH}")
fi
CONFIG_OPTS+=("--prefix=${BUILD_PREFIX}")
CONFIG_OPTS+=("--sysconfdir=${BUILD_PREFIX}/etc/nut")
CONFIG_OPTS+=("--with-udev-dir=${BUILD_PREFIX}/etc/udev")
CONFIG_OPTS+=("--with-devd-dir=${BUILD_PREFIX}/etc/devd")
CONFIG_OPTS+=("--with-hotplug-dir=${BUILD_PREFIX}/etc/hotplug")
if [ -n "${PYTHON-}" ]; then
# WARNING: Watch out for whitespaces, not handled here!
CONFIG_OPTS+=("--with-python=${PYTHON}")
fi
# Some OSes have broken cppunit support, it crashes either build/link
# or at run-time. While distros take time to figure out fixes, we can
# skip the case...
if [ "${CANBUILD_CPPUNIT_TESTS-}" = no ] \
|| ( [ "${CANBUILD_CPPUNIT_TESTS-}" = "no-gcc" ] && [ "$COMPILER_FAMILY" = "GCC" ] ) \
|| ( [ "${CANBUILD_CPPUNIT_TESTS-}" = "no-clang" ] && [ "$COMPILER_FAMILY" = "CLANG" ] ) \
; then
echo "WARNING: Build agent says it can't build or run libcppunit tests, adding configure option to skip them" >&2
CONFIG_OPTS+=("--enable-cppunit=no")
fi
if [ "${CANBUILD_VALGRIND_TESTS-}" = no ] ; then
echo "WARNING: Build agent says it has a broken valgrind, adding configure option to skip tests with it" >&2
CONFIG_OPTS+=("--with-valgrind=no")
fi
# This flag is primarily linked with (lack of) docs generation enabled
# (or not) in some BUILD_TYPE scenarios or workers. Initial value may
# be set by caller, but codepaths below have the final word.
[ "${DO_DISTCHECK-}" = no ] || DO_DISTCHECK=yes
case "$BUILD_TYPE" in
"default-nodoc")
CONFIG_OPTS+=("--with-doc=no")
DO_DISTCHECK=no
;;
"default-spellcheck"|"default-shellcheck")
CONFIG_OPTS+=("--with-all=no")
CONFIG_OPTS+=("--with-libltdl=no")
CONFIG_OPTS+=("--with-doc=man=skip")
#TBD# CONFIG_OPTS+=("--with-shellcheck=yes")
DO_DISTCHECK=no
;;
"default-withdoc")
# If the build agent says what it can not do, honor that
# TOTHINK: Should this build scenario die with error/unstable instead?
if [ "${CANBUILD_DOCS_ALL-}" = no ]; then
if [ "${CANBUILD_DOCS_MAN-}" = no ]; then
# TBD: Also html? We'd have man then, and that is needed for distchecks at least
echo "WARNING: Build agent says it can build neither 'all' nor 'man' doc types; will ask for what we can build" >&2
#?#CONFIG_OPTS+=("--with-doc=no")
CONFIG_OPTS+=("--with-doc=auto")
else
echo "WARNING: Build agent says it can't build 'all' doc types, but can build 'man' pages; will ask for what we can build" >&2
CONFIG_OPTS+=("--with-doc=auto")
fi
else
if [ "${CANBUILD_DOCS_MAN-}" = no ]; then
# TBD: Also html? We'd have man then, and that is needed for distchecks at least
echo "WARNING: Build agent says it can't build 'man' pages and says nothing about 'all' doc types; will ask for what we can build" >&2
CONFIG_OPTS+=("--with-doc=auto")
else
# Not a "no" in any category (yes or unspecified), request everything
CONFIG_OPTS+=("--with-doc=yes")
fi
fi
if [ -z "${DO_CLEAN_CHECK-}" ]; then
# This is one of recipes where we want to
# keep the build products by default ;)
DO_CLEAN_CHECK=no
fi
;;
"default-withdoc:man")
# Some systems lack tools for HTML/PDF generation
# but may still yield standard man pages
if [ "${CANBUILD_DOCS_MAN-}" = no ]; then
echo "WARNING: Build agent says it can't build man pages; will ask for what we can build" >&2
CONFIG_OPTS+=("--with-doc=auto")
else
CONFIG_OPTS+=("--with-doc=man")
fi
if [ -z "${DO_CLEAN_CHECK-}" ]; then
# This is one of recipes where we want to
# keep the build products by default ;)
DO_CLEAN_CHECK=no
fi
;;
"default-all-errors")
# This mode aims to build as many codepaths (to collect warnings)
# as it can, so help it enable (require) as many options as we can.
# Do not build the docs as we are interested in binary code
CONFIG_OPTS+=("--with-doc=skip")
# Enable as many binaries to build as current worker setup allows
CONFIG_OPTS+=("--with-all=auto")
if [ "${CANBUILD_LIBGD_CGI-}" != "no" ] && [ "${BUILD_LIBGD_CGI-}" != "auto" ] ; then
# Currently --with-all implies this, but better be sure to
# really build everything we can to be certain it builds:
if pkg-config --exists libgd || pkg-config --exists libgd2 || pkg-config --exists libgd3 || pkg-config --exists gdlib ; then
CONFIG_OPTS+=("--with-cgi=yes")
else
# Note: CI-wise, our goal IS to test as much as we can
# with this build, so environments should be set up to
# facilitate that as much as feasible. But reality is...
echo "WARNING: Seems libgd{,2,3} is not present, CGI build may be skipped!" >&2
CONFIG_OPTS+=("--with-cgi=auto")
fi
else
CONFIG_OPTS+=("--with-cgi=auto")
fi
;;
"default-alldrv:no-distcheck")
DO_DISTCHECK=no
;& # fall through
"default-alldrv")
# Do not build the docs and make possible a distcheck below
CONFIG_OPTS+=("--with-doc=skip")
if [ "${CANBUILD_DRIVERS_ALL-}" = no ]; then
echo "WARNING: Build agent says it can't build 'all' driver types; will ask for what we can build" >&2
if [ "$DO_DISTCHECK" != no ]; then
echo "WARNING: this is effectively default-tgt:distcheck-light then" >&2
fi
CONFIG_OPTS+=("--with-all=auto")
else
CONFIG_OPTS+=("--with-all=yes")
fi
;;
"default-tgt:cppcheck")
if [ "${CANBUILD_CPPCHECK_TESTS-}" = no ] ; then
echo "WARNING: Build agent says it has a broken cppcheck, but we requested a BUILD_TYPE='$BUILD_TYPE'" >&2
exit 1
fi
if [ -z "${DO_CLEAN_CHECK-}" ]; then
# This is one of recipes where we want to
# keep the build products by default ;)
DO_CLEAN_CHECK=no
fi
CONFIG_OPTS+=("--enable-cppcheck=yes")
CONFIG_OPTS+=("--with-doc=skip")
;;
"default"|"default-tgt:"*|*)
# Do not build the docs and tell distcheck it is okay
CONFIG_OPTS+=("--with-doc=skip")
;;
esac
# NOTE: The case "$BUILD_TYPE" above was about setting CONFIG_OPTS.
# There is another below for running actual scenarios.
if [ "$HAVE_CCACHE" = yes ] && [ "${COMPILER_FAMILY}" = GCC -o "${COMPILER_FAMILY}" = CLANG ]; then
PATH="/usr/lib/ccache:$PATH"
export PATH
if [ -n "$CC" ]; then
if [ -x "/usr/lib/ccache/`basename "$CC"`" ]; then
case "$CC" in
*ccache*) ;;
*/*) DIR_CC="`dirname "$CC"`" && [ -n "$DIR_CC" ] && DIR_CC="`cd "$DIR_CC" && pwd `" && [ -n "$DIR_CC" ] && [ -d "$DIR_CC" ] || DIR_CC=""
[ -z "$CCACHE_PATH" ] && CCACHE_PATH="$DIR_CC" || \
if echo "$CCACHE_PATH" | egrep '(^'"$DIR_CC"':.*|^'"$DIR_CC"'$|:'"$DIR_CC"':|:'"$DIR_CC"'$)' ; then
CCACHE_PATH="$DIR_CC:$CCACHE_PATH"
fi
;;
esac
CC="/usr/lib/ccache/`basename "$CC"`"
else
CC="ccache $CC"
fi
fi
if [ -n "$CXX" ]; then
if [ -x "/usr/lib/ccache/`basename "$CXX"`" ]; then
case "$CXX" in
*ccache*) ;;
*/*) DIR_CXX="`dirname "$CXX"`" && [ -n "$DIR_CXX" ] && DIR_CXX="`cd "$DIR_CXX" && pwd `" && [ -n "$DIR_CXX" ] && [ -d "$DIR_CXX" ] || DIR_CXX=""
[ -z "$CCACHE_PATH" ] && CCACHE_PATH="$DIR_CXX" || \
if echo "$CCACHE_PATH" | egrep '(^'"$DIR_CXX"':.*|^'"$DIR_CXX"'$|:'"$DIR_CXX"':|:'"$DIR_CXX"'$)' ; then
CCACHE_PATH="$DIR_CXX:$CCACHE_PATH"
fi
;;
esac
CXX="/usr/lib/ccache/`basename "$CXX"`"
else
CXX="ccache $CXX"
fi
fi
if [ -n "$CPP" ] && [ -x "/usr/lib/ccache/`basename "$CPP"`" ]; then
case "$CPP" in
*ccache*) ;;
*/*) DIR_CPP="`dirname "$CPP"`" && [ -n "$DIR_CPP" ] && DIR_CPP="`cd "$DIR_CPP" && pwd `" && [ -n "$DIR_CPP" ] && [ -d "$DIR_CPP" ] || DIR_CPP=""
[ -z "$CCACHE_PATH" ] && CCACHE_PATH="$DIR_CPP" || \
if echo "$CCACHE_PATH" | egrep '(^'"$DIR_CPP"':.*|^'"$DIR_CPP"'$|:'"$DIR_CPP"':|:'"$DIR_CPP"'$)' ; then
CCACHE_PATH="$DIR_CPP:$CCACHE_PATH"
fi
;;
esac
CPP="/usr/lib/ccache/`basename "$CPP"`"
else
: # CPP="ccache $CPP"
fi
# Note: Potentially there can be spaces in entries for multiword
# "ccache gcc" here; this should be okay as long as entry expands to
# one token when calling shell (may not be the case for distcheck)
CONFIG_OPTS+=("CC=${CC}")
CONFIG_OPTS+=("CXX=${CXX}")
CONFIG_OPTS+=("CPP=${CPP}")
fi
# Build and check this project; note that zprojects always have an autogen.sh
[ -z "$CI_TIME" ] || echo "`date`: Starting build of currently tested project..."
CCACHE_BASEDIR="${PWD}"
export CCACHE_BASEDIR
# Numerous per-compiler variants defined in configure.ac, including
# aliases "minimal", "medium", "hard", "all"
if [ -n "${BUILD_WARNOPT-}" ]; then
CONFIG_OPTS+=("--enable-warnings=${BUILD_WARNOPT}")
fi
# Parse from strings that could be populated by a CI Boolean checkbox:
case "${BUILD_WARNFATAL-}" in
[Tt][Rr][Uu][Ee]) BUILD_WARNFATAL=yes;;
[Ff][Aa][Ll][Ss][Ee]) BUILD_WARNFATAL=no;;
esac
if [ -n "${BUILD_WARNFATAL-}" ]; then
CONFIG_OPTS+=("--enable-Werror=${BUILD_WARNFATAL}")
fi
# Tell interactive and CI builds to prefer colorized output so warnings
# and errors are found more easily in a wall of text:
CONFIG_OPTS+=("--enable-Wcolor")
# Note: modern auto(re)conf requires pkg-config to generate the configure
# script, so to stage the situation of building without one (as if on an
# older system) we have to remove it when we already have the script.
# This matches the use-case of distro-building from release tarballs that
# include all needed pre-generated files to rely less on OS facilities.
if [ -s Makefile ]; then
# Let initial clean-up be at default verbosity
echo "=== Starting initial clean-up (from old build products)"
${MAKE} maintainer-clean -k || ${MAKE} distclean -k || true
echo "=== Finished initial clean-up"
fi
if [ "$CI_OS_NAME" = "windows" ] ; then
$CI_TIME ./autogen.sh || true
else
$CI_TIME ./autogen.sh ### 2>/dev/null
fi
if [ "$NO_PKG_CONFIG" == "true" ] && [ "$CI_OS_NAME" = "linux" ] && (command -v dpkg) ; then
echo "NO_PKG_CONFIG==true : BUTCHER pkg-config for this test case" >&2
sudo dpkg -r --force all pkg-config
fi
if [ "$BUILD_TYPE" != "default-all-errors" ] ; then
configure_nut
fi
# NOTE: There is also a case "$BUILD_TYPE" above for setting CONFIG_OPTS
# This case runs some specially handled BUILD_TYPEs and exists; support
# for all other scenarios proceeds.below.
case "$BUILD_TYPE" in
"default-tgt:"*) # Hook for matrix of custom distchecks primarily
# e.g. distcheck-light, distcheck-valgrind, cppcheck, maybe
# others later, as defined in Makefile.am:
BUILD_TGT="`echo "$BUILD_TYPE" | sed 's,^default-tgt:,,'`"
echo "`date`: Starting the sequential build attempt for singular target $BUILD_TGT..."
# Note: Makefile.am already sets some default DISTCHECK_CONFIGURE_FLAGS
# that include DISTCHECK_FLAGS if provided
DISTCHECK_FLAGS="`for F in "${CONFIG_OPTS[@]}" ; do echo "'$F' " ; done | tr '\n' ' '`"
export DISTCHECK_FLAGS
# Tell the sub-makes (distcheck) to hush down
# NOTE: Parameter pass-through was tested with:
# MAKEFLAGS="-j 12" BUILD_TYPE=default-tgt:distcheck-light ./ci_build.sh
MAKEFLAGS="${MAKEFLAGS-} $MAKE_FLAGS_QUIET" \
$CI_TIME $MAKE DISTCHECK_FLAGS="$DISTCHECK_FLAGS" $PARMAKE_FLAGS "$BUILD_TGT"
# Can be noisy if regen is needed (DMF branch)
#GIT_DIFF_SHOW=false \
FILE_DESCR="DMF" FILE_REGEX='\.dmf$' FILE_GLOB='*.dmf' check_gitignore "$BUILD_TGT" || exit
check_gitignore "$BUILD_TGT" || exit
ccache_stats "after"
optional_maintainer_clean_check || exit
echo "=== Exiting after the custom-build target '$MAKE $BUILD_TGT' succeeded OK"
exit 0
;;
"default-spellcheck")
[ -z "$CI_TIME" ] || echo "`date`: Trying to spellcheck documentation of the currently tested project..."
# Note: use the root Makefile's spellcheck recipe which goes into
# sub-Makefiles known to check corresponding directory's doc files.
# Note: no PARMAKE_FLAGS here - better have this output readably
# ordered in case of issues (in sequential replay below).
( echo "`date`: Starting the quiet build attempt for target $BUILD_TYPE..." >&2
$CI_TIME $MAKE $MAKE_FLAGS_QUIET SPELLCHECK_ERROR_FATAL=yes -k $PARMAKE_FLAGS spellcheck >/dev/null 2>&1 \
&& echo "`date`: SUCCEEDED the spellcheck" >&2
) || \
( echo "`date`: FAILED something in spellcheck above; re-starting a verbose build attempt to give more context first:" >&2
$CI_TIME $MAKE $MAKE_FLAGS_VERBOSE SPELLCHECK_ERROR_FATAL=yes spellcheck
# Make end of log useful:
echo "`date`: FAILED something in spellcheck above; re-starting a non-verbose build attempt to just summarize now:" >&2
$CI_TIME $MAKE $MAKE_FLAGS_QUIET SPELLCHECK_ERROR_FATAL=yes spellcheck
)
exit $?
;;
"default-shellcheck")
[ -z "$CI_TIME" ] || echo "`date`: Trying to check shell script syntax validity of the currently tested project..."
### Note: currently, shellcheck target calls check-scripts-syntax
### so when both are invoked at once, in the end the check is only
### executed once. Later it is anticipated that shellcheck would
### be implemented by requiring, configuring and calling the tool
### named "shellcheck" for even more code inspection and details.
### Still, there remains value in also checking the script syntax
### by the very version of the shell interpreter that would run
### these scripts in production usage of the resulting packages.
### Note: no PARMAKE_FLAGS here - better have this output readably
### ordered in case of issues.
( $CI_TIME $MAKE $MAKE_FLAGS_VERBOSE shellcheck check-scripts-syntax )
exit $?
;;
"default-all-errors")
# This mode aims to build as many codepaths (to collect warnings)
# as it can, so help it enable (require) as many options as we can.
# Try to run various build scenarios to collect build errors
# (no checks here) as configured further by caller's choice
# of BUILD_WARNFATAL and/or BUILD_WARNOPT envvars above.
# Note this is one scenario where we did not configure_nut()
# in advance.
RES_ALLERRORS=0
FAILED=""
SUCCEEDED=""
BUILDSTODO=0
# Technically, let caller provide this setting explicitly
if [ -z "$NUT_SSL_VARIANTS" ] ; then
NUT_SSL_VARIANTS="auto"
if pkg-config --exists nss && pkg-config --exists openssl && [ "${BUILD_SSL_ONCE-}" != "true" ] ; then
# Try builds for both cases as they are ifdef-ed
# TODO: Extend if we begin to care about different
# major versions of openssl (with their APIs), etc.
NUT_SSL_VARIANTS="openssl nss"
else
if [ "${BUILD_SSL_ONCE-}" != "true" ]; then
pkg-config --exists nss 2>/dev/null && NUT_SSL_VARIANTS="nss"
pkg-config --exists openssl 2>/dev/null && NUT_SSL_VARIANTS="openssl"
fi # else leave at "auto", if we skipped building
# two variants while having two possibilities
fi
# Consider also a build --without-ssl to test that codepath?
if [ "$NUT_SSL_VARIANTS" != auto ] && [ "${BUILD_SSL_ONCE-}" != "true" ]; then
NUT_SSL_VARIANTS="$NUT_SSL_VARIANTS no"
fi
fi
if [ -z "$NUT_USB_VARIANTS" ] ; then
# Check preferred version first, in case BUILD_USB_ONCE==true
if pkg-config --exists libusb-1.0 ; then
NUT_USB_VARIANTS="1.0"
fi
# TODO: Is there anywhere a `pkg-config --exists libusb-0.1`?
if pkg-config --exists libusb || ( command -v libusb-config || which libusb-config ) 2>/dev/null >/dev/null ; then
if [ -z "$NUT_USB_VARIANTS" ] ; then