mirror of
https://github.com/omar-polo/gmid.git
synced 2024-09-30 06:21:19 +02:00
356 lines
9.6 KiB
Bash
Executable File
356 lines
9.6 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2021 Omar Polo <op@omarpolo.com>
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#
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# Permission to use, copy, modify, and distribute this software for any
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# purpose with or without fee is hereby granted, provided that the above
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# copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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# adapted from mandoc configure and oconfigure, thanks schwarze@ and
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# kristaps@!
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set -e
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[ -w config.log ] && mv config.log config.log.old
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[ -w config.h ] && mv config.h config.h.old
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# Output file descriptor usage:
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# 1 (stdout): config.h, Makefile.local
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# 2 (stderr): original stderr, usually to the console
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# 3: config.log
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exec 3> config.log
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echo "file config.log: writing..."
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# --------
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# default settings: initialize all vars here such that nothing is
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# leaked from the environment except for CC and CFLAGS
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CC=`printf "all:\\n\\t@echo \\\$(CC)\\n" | make ${MAKE_FLAGS} -sf -`
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CFLAGS=`printf "all:\\n\\t@echo \\\$(CFLAGS)\\n" | make ${MAKE_FLAGS} -sf -`
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CFLAGS="${CFLAGS} -g -W -Wall -Wextra -Wmissing-prototypes -Wstrict-prototypes"
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CFLAGS="${CFLAGS} -Wwrite-strings -Wno-unused-parameter"
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LDFLAGS=-ltls
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YACC=yacc
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LEX=lex
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STATIC=
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HAVE_ERR=
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HAVE_EXPLICIT_BZERO=
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HAVE_GETPROGNAME=
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HAVE_LIBTLS=
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HAVE_OPENSSL=
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HAVE_RECALLOCARRAY=
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HAVE_STRLCAT=
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HAVE_STRLCPY=
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HAVE_STRTONUM=
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HAVE_VASPRINTF=
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NEED_GNU_SOURCE=0
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NEED_OPENBSD_SOURCE=0
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PREFIX="/usr/local"
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BINDIR=
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INSTALL="install"
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# try to auto detect CFLAGS and LDFLAGS
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if which pkg-config 2>/dev/null 1>&2; then
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if pkg-config libtls; then
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CFLAGS="$(pkg-config --cflags libtls)"
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LDFLAGS="$(pkg-config --libs libtls)"
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fi
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if pkg-config openssl; then
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CFLAGS="${CFLAGS} $(pkg-config --cflags openssl)"
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LDFLAGS="${LDFLAGS} $(pkg-config --libs openssl)"
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fi
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fi
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# auto detect lex/flex
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which ${LEX} 2>/dev/null 1>&2 || {
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echo "${LEX} not found: trying flex" 1>&2
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echo "${LEX} not found: trying flex" 1>&3
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LEX=flex
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which ${LEX} 2>/dev/null 1>&2 || {
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echo "${LEX} not found: giving up" 1>&2
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echo "${LEX} not found: giving up" 1>&3
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exit 1
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}
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}
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# auto detect yacc/bison
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which ${YACC} 2>/dev/null 1>&2 || {
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echo "${YACC} not found: trying bison" 1>&2
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echo "${YACC} not found: trying bison" 1>&3
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YACC=bison
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which ${YACC} 2>/dev/null 1>&2 || {
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echo "${YACC} not found: giving up" 1>&2
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echo "${YACC} not found: giving up" 1>&3
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exit 1
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}
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}
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# --------
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# allow certain variables to be overridden on the command line
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for keyvals in "$@"; do
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key=`echo $keyvals | cut -s -d '=' -f1`
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if [ -z "$key" ]; then
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echo "$0: invalid key-value: $keyvals" 1>&2
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exit 1
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fi
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val=`echo $keyvals | cut -d '=' -f 2-`
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case "$key" in
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BINDIR) BINDIR="$val" ;;
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CC) CC="$val" ;;
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CFLAGS) CFLAGS="$val" ;;
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DESTDIR) DESTDIR="$val" ;;
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LDFLAGS) LDFLAGS="$val" ;;
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LEX) LEX="$lex" ;;
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PREFIX) PREFIX="$val" ;;
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YACC) YACC="$val" ;;
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*)
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echo "$0: invalid key: $key" 1>&2
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exit 1
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esac
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done
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# --------
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# tests functions
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# Check whether this HAVE_ setting is manually overridden.
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# If yes, use the override, if no, do not decide anything yet.
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# Arguments: test file name, test var name, manual value
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ismanual() {
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[ -z "${3}" ] && return 1
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echo "tested ${1}: HAVE_${2}=${3} (manual)" 1>&2
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echo "tested ${1}: HAVE_${2}=${3} (manual)" 1>&3
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echo 1>&3
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return 0
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}
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# Run a single autoconfiguration test.
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# In case of success, enable the feature.
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# In case of failure, do not decide anything yet.
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# Arguments: test file name, test var name, additional CFLAGS
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singletest() {
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n=${1}${3}
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cat 1>&3 << __HEREDOC__
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testing ${n} ...
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${COMP} -o have/${1} have/${1}.c ${3} ${LDFLAGS}
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__HEREDOC__
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if ${COMP} -o "have/${1}" "have/${1}.c" ${3} ${LDFLAGS} 1>&3 2>&3
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then
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echo "partial result of ${n}: ${CC} succeeded" 1>&3
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else
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echo "tested ${n}: no (compilation failed)" 1>&2
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echo "result of ${n}: ${CC} failed with exit status $?" 1>&3
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echo "result of compiling ${n}: no" 1>&3
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echo 1>&3
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return 1
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fi
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if ./have/${1} 1>&3 2>&3; then
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echo "tested ${n}: yes" 1>&2
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echo "result of running ${n}: yes" 1>&3
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echo 1>&3
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eval HAVE_${2}=1
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[ "${3}" = "-D_GNU_SOURCE" ] && NEED_GNU_SOURCE=1
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[ "${3}" = "-D_OPENBSD_SOURCE" ] && NEED_OPENBSD_SOURCE=1
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[ "${3}" = "-lsocket" ] && LD_RECVMSG="-lsocket"
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rm "have/${1}"
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return 0
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else
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echo "tested ${n}: no (execution failed)" 1>&2
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echo "result of ${n}: execution failed with exit status $?" 1>&3
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echo "result of running ${n}: no" 1>&3
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echo 1>&3
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rm "have/${1}"
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return 1
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fi
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}
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# Run a complete autoconfiguration test, including the check for
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# a manual override and disabling the feature on failure.
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# Arguments: test file name, test var name, additional CFLAGS
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# The final argument can optionally be repeated a second time.
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runtest() {
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eval _manual=\${HAVE_${2}}
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ismanual "${1}" "${2}" "${_manual}" && return 0
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singletest "${1}" "${2}" "${3}" && return 0
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[ -n "${4}" ] && singletest "${1}" "${2}" "${4}" && return 0
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eval HAVE_${2}=0
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return 1
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}
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# --------
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# compiler options
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COMP="${CC} ${CFLAGS} -Wno-unused -Werror"
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echo "selected CFLAGS=\"${CFLAGS}\"" 1>&2
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echo "selected CFLAGS=\"${CFLAGS}\"" 1>&3
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echo 1>&3
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if [ -n "${STATIC}" ]; then
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echo "selected STATIC=\"${STATIC}\" (manual)" 1>&2
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echo "selected STATIC=\"${STATIC}\" (manual)" 1>&3
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echo 1>&3
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else
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runtest noop STATIC -static || true
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[ ${HAVE_STATIC} -eq 0 ] || STATIC="-static"
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echo "selected STATIC=\"${STATIC}\"" 1>&2
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echo "selected STATIC=\"${STATIC}\"" 1>&3
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echo 1>&3
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fi
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# --------
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# tests for config.h
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runtest err ERR || true
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runtest explicit_bzero EXPLICIT_BZERO || true
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runtest getprogname GETPROGNAME || true
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runtest libtls LIBTLS || true
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runtest openssl OPENSSL || true
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runtest recallocarray RECALLOCARRAY || true
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runtest strlcat STRLCAT || true
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runtest strlcpy STRLCPY || true
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runtest strtonum STRTONUM || true
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runtest vasprintf VASPRINTF "" -D_GNU_SOURCE || true
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if [ ${HAVE_LIBTLS} -eq 0 ]; then
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echo "FATAL: libtls not found" 1>&2
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echo "FATAL: libtls not found" 1>&3
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exit 1
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fi
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if [ ${HAVE_OPENSSL} -eq 0 ]; then
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echo "FATAL: openssl not found" 1>&2
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echo "FATAL: openssl not found" 1>&3
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exit 1
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fi
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# --------
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# write config.h
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exec > config.h
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cat <<__HEREDOC__
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#ifdef __cplusplus
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#error "Do not use C++."
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#endif
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__HEREDOC__
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[ ${NEED_GNU_SOURCE} -eq 0 ] || echo "#define _GNU_SOURCE"
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[ ${NEED_OPENBSD_SOURCE} -eq 0 ] || echo "#define _OPENBSD_SOURCE"
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[ ${HAVE_STRLCAT} -eq 0 -o ${HAVE_STRLCPY} -eq 0 ] \
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&& echo "#include <sys/types.h>"
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[ ${HAVE_VASPRINTF} -eq 0 ] && echo "#include <stdarg.h>"
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cat <<__HEREDOC__
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#define HAVE_ERR ${HAVE_ERR}
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#define HAVE_EXPLICIT_BZERO ${HAVE_EXPLICIT_BZERO}
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#define HAVE_GETPROGNAME ${HAVE_GETPROGNAME}
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#define HAVE_RECALLOCARRAY ${HAVE_RECALLOCARRAY}
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#define HAVE_STRLCAT ${HAVE_STRLCAT}
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#define HAVE_STRLCPY ${HAVE_STRLCPY}
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#define HAVE_STRTONUM ${HAVE_STRTONUM}
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#define HAVE_VASPRINTF ${HAVE_VASPRINTF}
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__HEREDOC__
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[ ${HAVE_VASPRINTF} -eq 0 ] && echo "#include <stdarg.h>"
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[ ${HAVE_EXPLICIT_BZERO} -eq 0 -o \
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${HAVE_RECALLOCARRAY} -eq 0 -o \
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${HAVE_STRLCAT} -eq 0 -o \
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${HAVE_STRLCPY} -eq 0 -o \
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${HAVE_STRTONUM} -eq 0 ] && echo "#include <stddef.h>"
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if [ ${HAVE_ERR} -eq 0 ]; then
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echo "extern void err(int, const char*, ...);"
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echo "extern void errx(int, const char*, ...);"
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echo "extern void warn(const char*, ...);"
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echo "extern void warnx(const char*, ...);"
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COMPAT="${COMPAT} compat/err.o"
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else
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echo "#include <err.h>"
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fi
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if [ ${HAVE_EXPLICIT_BZERO} -eq 0 ]; then
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echo "extern void explicit_bzero(void*, size_t);"
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COMPAT="${COMPAT} compat/explicit_bzero.o"
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fi
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if [ ${HAVE_GETPROGNAME} -eq 0 ]; then
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echo "extern const char *getprogname(void);"
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COMPAT="${COMPAT} compat/getprogname.o"
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fi
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if [ ${HAVE_RECALLOCARRAY} -eq 0 ]; then
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echo "extern void* recallocarray(void*, size_t, size_t, size_t);"
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COMPAT="${COMPAT} compat/recallocarray.o"
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fi
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if [ ${HAVE_STRLCAT} -eq 0 ]; then
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echo "extern size_t strlcat(char*, const char*, size_t);"
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COMPAT="${COMPAT} compat/strlcat.o"
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fi
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if [ ${HAVE_STRLCPY} -eq 0 ]; then
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echo "extern size_t strlcpy(char*, const char*, size_t);"
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COMPAT="${COMPAT} compat/strlcpy.o"
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fi
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if [ ${HAVE_STRTONUM} -eq 0 ]; then
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echo "extern long long strtonum(const char*, long long, long long, const char**);"
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COMPAT="${COMPAT} compat/strtonum.o"
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fi
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if [ ${HAVE_VASPRINTF} -eq 0 ]; then
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echo "extern int vasprintf(char**, const char*, va_list);"
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COMPAT="${COMPAT} compat/vasprintf.o"
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fi
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echo "file config.h: written" 1>&2
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echo "file config.h: written" 1>&3
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# --------
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# tests for Makefile.local
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exec > Makefile.local
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[ -z "${BINDIR}" ] && BINDIR="${PREFIX}/bin"
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[ -z "${MANDIR}" ] && MANDIR="${PREFIX}/man"
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[ -z "${INSTALL_PROGRAM}" ] && INSTALL_PROGRAM="${INSTALL} -m 0555"
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[ -z "${INSTALL_LIB}" ] && INSTALL_LIB="${INSTALL} -m 0444"
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[ -z "${INSTALL_MAN}" ] && INSTALL_MAN="${INSTALL} -m 0444"
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[ -z "${INSTALL_DATA}" ] && INSTALL_DATA="${INSTALL} -m 0444"
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cat << __HEREDOC__
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CC = ${CC}
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CFLAGS = ${CFLAGS}
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LDFLAGS = ${LDFLAGS}
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YACC = ${YACC}
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LEX = ${LEX}
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COMPAT = ${COMPAT}
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STATIC = ${STATIC}
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PREFIX = ${PREFIX}
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BINDIR = ${BINDIR}
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INCLUDEDIR = ${INCLUDEDIR}
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INSTALL = ${INSTALL}
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INSTALL_PROGRAM = ${INSTALL_PROGRAM}
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INSTALL_LIB = ${INSTALL_LIB}
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INSTALL_MAN = ${INSTALL_MAN}
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INSTALL_DATA = ${INSTALL_DATA}
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__HEREDOC__
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echo "file Makefile.local: written" 1>&2
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echo "file Makefile.local: written" 1>&3
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exit 0
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