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#!/usr/bin/env bash
set -e
# ci_autotools.sh
# Continuously integrate libpng using the GNU Autotools.
#
# Copyright (c) 2019-2020 Cosmin Truta.
#
# This software is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h.
readonly CI_SCRIPTNAME="$(basename "$0")"
readonly CI_SCRIPTDIR="$(cd "$(dirname "$0")" && pwd)"
readonly CI_SRCDIR="$(dirname "$CI_SCRIPTDIR")"
readonly CI_BUILDDIR="$CI_SRCDIR/out/autotools.build"
readonly CI_INSTALLDIR="$CI_SRCDIR/out/autotools.install"
function ci_info {
printf >&2 "%s: %s\\n" "$CI_SCRIPTNAME" "$*"
}
function ci_err {
printf >&2 "%s: error: %s\\n" "$CI_SCRIPTNAME" "$*"
exit 2
}
function ci_spawn {
printf >&2 "%s: executing:" "$CI_SCRIPTNAME"
printf >&2 " %q" "$@"
printf >&2 "\\n"
"$@"
}
function ci_init_autotools {
# Initialize the CI_ variables with default values, where applicable.
CI_MAKE="${CI_MAKE:-make}"
[[ $(uname -s || echo unknown) == Darwin ]] && CI_CC="${CI_CC:-clang}"
# Print the CI_ variables.
ci_info "source directory: $CI_SRCDIR"
ci_info "build directory: $CI_BUILDDIR"
ci_info "install directory: $CI_INSTALLDIR"
ci_info "environment option: \$CI_CONFIGURE_FLAGS='$CI_CONFIGURE_FLAGS'"
ci_info "environment option: \$CI_MAKE='$CI_MAKE'"
ci_info "environment option: \$CI_MAKE_FLAGS='$CI_MAKE_FLAGS'"
ci_info "environment option: \$CI_CC='$CI_CC'"
ci_info "environment option: \$CI_CC_FLAGS='$CI_CC_FLAGS'"
ci_info "environment option: \$CI_SANITIZERS='$CI_SANITIZERS'"
ci_info "environment option: \$CI_NO_TEST='$CI_NO_TEST'"
ci_info "environment option: \$CI_NO_INSTALL='$CI_NO_INSTALL'"
ci_info "environment option: \$CI_NO_CLEAN='$CI_NO_CLEAN'"
# Avoid using the CI_ variables that cannot be customized reliably.
[[ ! $CI_CONFIGURE_VARS ]] || ci_err "unexpected: \$CI_CONFIGURE_VARS='$CI_CONFIGURE_VARS'"
[[ ! $CI_MAKE_VARS ]] || ci_err "unexpected: \$CI_MAKE_VARS='$CI_MAKE_VARS'"
}
function ci_build_autotools {
# Export the configure build environment.
[[ $CI_CC ]] && ci_spawn export CC="$CI_CC"
[[ $CI_CC_FLAGS ]] && ci_spawn export CFLAGS="$CI_CC_FLAGS"
[[ $CI_SANITIZERS ]] && ci_spawn export CFLAGS="-fsanitize=$CI_SANITIZERS -O2 $CFLAGS"
# Build and install.
ci_spawn rm -fr "$CI_BUILDDIR" "$CI_INSTALLDIR"
ci_spawn mkdir -p "$CI_BUILDDIR"
ci_spawn cd "$CI_BUILDDIR"
ci_spawn "$CI_SRCDIR/configure" --prefix="$CI_INSTALLDIR" $CI_CONFIGURE_FLAGS
ci_spawn "$CI_MAKE" $CI_MAKE_FLAGS
[[ $CI_NO_TEST ]] || ci_spawn "$CI_MAKE" $CI_MAKE_FLAGS test
[[ $CI_NO_INSTALL ]] || ci_spawn "$CI_MAKE" $CI_MAKE_FLAGS install
[[ $CI_NO_CLEAN ]] || ci_spawn "$CI_MAKE" $CI_MAKE_FLAGS clean
[[ $CI_NO_CLEAN ]] || ci_spawn "$CI_MAKE" $CI_MAKE_FLAGS distclean
ci_info "success!"
}
ci_init_autotools
[[ ! $* ]] || {
ci_info "note: this program accepts environment options only"
ci_err "unexpected command arguments: '$*'"
}
ci_build_autotools
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