1 #!/bin/sh
2 #
3 # Copyright (c) 2021, 2022, 2023 Omar Polo <op@omarpolo.com>
4 # Copyright (c) 2011, 2013-2022 Ingo Schwarze <schwarze@openbsd.org>
5 # Copyright (c) 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
6 #
7 # Permission to use, copy, modify, and distribute this software for any
8 # purpose with or without fee is hereby granted, provided that the above
9 # copyright notice and this permission notice appear in all copies.
10 #
11 # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 
19 set -e
20 
21 RELEASE=no
22 VERSION=2.0-unstable
23 
24 usage()
25 {
26 	echo "usage: $0 [--help] [--prefix=prefix] [OPTION=VALUE...]" >&2
27 	exit 1
28 }
29 
30 if command -v yacc 2>/dev/null >&2; then
31 	YACC=yacc
32 elif command -v bison 2>/dev/null >&2; then
33 	YACC=bison
34 else
35 	# assume yacc by default.  Make will fail building parse.y if
36 	# not from a release tarball, but at least it'll have a decent
37 	# error message.
38 	YACC=yacc
39 fi
40 
41 pkgconfig=
42 
43 CC=${CC:-cc}
44 
45 if [ "$RELEASE" = no ]; then
46 	CFLAGS=${CFLAGS:--O0 -g3}
47 else
48 	CFLAGS=${CFLAGS:--O2 -pipe}
49 fi
50 
51 PREFIX=${PREFIX-/usr/local}
52 
53 CDIAGFLAGS=
54 CDIAGFLAGS="${CDIAGFLAGS} -W -Wall -Wextra -Wpointer-arith -Wuninitialized"
55 CDIAGFLAGS="${CDIAGFLAGS} -Wstrict-prototypes -Wmissing-prototypes -Wunused"
56 CDIAGFLAGS="${CDIAGFLAGS} -Wsign-compare -Wno-unused-parameter" # -Wshadow
57 CDIAGFLAGS="${CDIAGFLAGS} -Wno-missing-field-initializers"
58 CDIAGFLAGS="${CDIAGFLAGS} -Wpointer-sign"
59 
60 while [ $# -gt 0 ]; do
61 	key="${1%%=*}"
62 	val="${1#*=}"
63 
64 	if [ "$key" = --help ]; then
65 		usage
66 	fi
67 
68 	if [ "$key" = -Werror ]; then
69 		CDIAGFLAGS="$CDIAGFLAGS -Werror"
70 		shift
71 		continue
72 	fi
73 
74 	if [ "$key" = --enable-sandbox ]; then
75 		key=DISABLE_SANDBOX
76 		val=0
77 	fi
78 
79 	if [ "$key" = --disable-sandbox ]; then
80 		key=DISABLE_SANDBOX
81 		val=1
82 	fi
83 
84 	if [ "$key" = "$1" ]; then
85 		# if no --xy=, look at the next arg
86 		if ! shift 2>/dev/null; then
87 			echo "$0: missing value for $key" >&2
88 			exit 1
89 		fi
90 		val="$1"
91 	fi
92 
93 	case "$key" in
94 	--bindir)	key=BINDIR ;;
95 	--mandir)	key=MANDIR ;;
96 	--prefix)	key=PREFIX ;;
97 	esac
98 
99 	case "$key" in
100 	BINDIR)		BINDIR="$val" ;;
101 	CC)		CC="$val" ;;
102 	CFLAGS)		CFLAGS="$val" ;;
103 	CDIAGFLAGS)	CDIAGFLAGS="$val" ;;
104 	DISABLE_SANDBOX) DISABLE_SANDBOX="$val" ;;
105 	LDFLAGS)	LDFLAGS="$val" ;;
106 	PKG_CONFIG)	PKG_CONFIG="$val" ;;
107 	PREFIX)		PREFIX="$val" ;;
108 	YACC)		YACC="$val" ;;
109 	*)		usage
110 	esac
111 
112 	shift
113 done
114 
115 [ -w config.log ] && mv config.log config.log.old
116 [ -w config.h   ] && mv config.h   config.h.old
117 
118 exec 3> config.log
119 echo "file config.log: writing..."
120 
121 NEED_GNU_SOURCE=0
122 NEED_OPENBSD_SOURCE=0
123 NEED_LIBBSD_OPENBSD_VIS=0
124 
125 COMPATS=
126 COMP="${CC} ${CFLAGS} -Wno-unused -Werror"
127 
128 # singletest name var extra-cflags extra-libs msg
129 singletest() {
130 	msg="$5"
131 	if [ -z "$msg" ]; then
132 		if [ -n "$3" ]; then
133 			msg=" ($3)"
134 		elif [ -n "$4" ]; then
135 			msg=" ($4)"
136 		fi
137 	elif [ "$msg" = no ]; then
138 		msg=""
139 	fi
140 
141 	cat >&3 <<EOF
142 ${1}: testing...
143 $COMP have/${1}.c $3 -o test-$1 $LDFLAGS $4
144 EOF
145 	if $COMP have/${1}.c $3 -o test-$1 $LDFLAGS $4 >&3 2>&3; then
146 		rm -f test-${1} test-${1}.d
147 
148 		echo "${1}: $CC$msg succeeded" >&3
149 		echo "${1}$msg: yes"
150 		echo >&3
151 
152 		return 0
153 	fi
154 
155 	echo "${1}: $CC$msg failed $?" >&3
156 	echo "${1}$msg: no"
157 	echo >&3
158 
159 	return 1
160 }
161 
162 # deptest name var
163 deptest() {
164 	if singletest "$1" "$2" "${CFLAGS}" "${LIBS}" no; then
165 		eval HAVE_${2}=1
166 		return 0
167 	fi
168 
169 	if [ -f compat/${1}.c ]; then
170 		COMPATS="compat/$1.c $COMPATS"
171 	fi
172 
173 	eval HAVE_${2}=0
174 	return 1
175 }
176 
177 # runtest name var extra-cflags extra-libs pkgconfig-name
178 runtest() {
179 	if singletest "$1" "$2" "" ""; then
180 		eval HAVE_${2}=1
181 		return 0
182 	fi
183 
184 	if [ -n "$3" -o -n "$4" ]; then
185 		echo "retrying with ${3+$3 }$4" >&3
186 		if singletest "$1" "$2" "$3" "$4"; then
187 			eval HAVE_${2}=1
188 			if [ "$3" = -D_GNU_SOURCE ]; then
189 				NEED_GNU_SOURCE=1
190 				return 0
191 			fi
192 			if [ "$4" = -D_OPENBSD_SOURCE ]; then
193 				NEED_OPENBSD_SOURCE=1
194 				return 0
195 			fi
196 			if [ "$4" = -DLIBBSD_OPENBSD_VIS ]; then
197 				NEED_LIBBSD_OPENBSD_VIS=1
198 				return 0
199 			fi
200 			if [ -n "$3" ]; then
201 				CFLAGS="$CFLAGS $3"
202 			fi
203 			if [ -n "$4" ]; then
204 				LIBS="$LIBS $4"
205 			fi
206 			return 0
207 		fi
208 	fi
209 
210 	if [ -n "$5" -a -n "$pkgconfig" ]; then
211 		if $pkgconfig $5; then
212 			cflags="$($pkgconfig --cflags $5)"
213 			ldflags="$($pkgconfig --libs $5)"
214 			echo "retrying with pkg-config" >&3
215 			if singletest "$1" "$2" "$cflags" "$ldflags"; then
216 				CFLAGS="$CFLAGS $cflags"
217 				LIBS="$LIBS $ldflags"
218 				eval HAVE_$2=1
219 				return 0
220 			fi
221 		fi
222 	fi
223 
224 	if [ -f compat/$1.c ]; then
225 		COMPATS="compat/$1.c $COMPATS"
226 	fi
227 
228 	eval HAVE_$2=0
229 	return 1
230 }
231 
232 if [ "$PKG_CONFIG" = no ]; then
233 	echo "pkg-config: disabled"
234 elif [ -n "$PKG_CONFIG" ]; then
235 	pkgconfig="$PKG_CONFIG"
236 	echo "pkg-config: (manual) $PKG_CONFIG"
237 elif command -v pkg-config 2>/dev/null >&2; then
238 	pkgconfig="pkg-config"
239 	echo "pkg-config: (auto) pkg-config"
240 else
241 	echo "pkg-config: not found"
242 fi
243 
244 if singletest noop MMD -MMD; then
245 	CFLAGS="${CFLAGS} -MMD"
246 fi
247 
248 if ! runtest wait_any WAIT_ANY; then
249 	CFLAGS="${CFLAGS} -DWAIT_ANY=-1"
250 fi
251 
252 HAVE_ENDIAN_H=0
253 HAVE_SYS_ENDIAN_H=0
254 HAVE_MACHINE_ENDIAN=0
255 
256 runtest endian_h	ENDIAN_H	|| \
257 runtest sys_endian_h	SYS_ENDIAN_H	|| \
258 runtest machine_endian	MACHINE_ENDIAN	|| true
259 
260 if [ ${HAVE_ENDIAN_H} -eq 0 -a \
261      ${HAVE_SYS_ENDIAN_H} -eq 0 -a \
262      ${HAVE_MACHINE_ENDIAN} -eq 0 ]; then
263 	echo "FATAL: no endian header found" 1>&2
264 	echo "FATAL: no endian header found" 1>&3
265 	exit 1
266 fi
267 
268 runtest err		ERR		|| true
269 runtest explicit_bzero	EXPLICIT_BZERO	|| true
270 runtest freezero	FREEZERO	|| true
271 runtest getdtablecount	GETDTABLECOUNT	|| true
272 runtest getdtablesize	GETDTABLESIZE	|| true
273 runtest getprogname	GETPROGNAME	|| true
274 runtest imsg		IMSG		"" -lutil libimsg || true
275 runtest libevent	LIBEVENT	"" -levent libevent_core|| true
276 runtest libtls		LIBTLS		"" -ltls libtls || true
277 runtest memmem		MEMMEM		-D_GNU_SOURCE || true
278 runtest openssl		OPENSSL		"" '-lcrypto -lssl' 'libcrypto libssl' || true
279 runtest pr_set_name	PR_SET_NAME	|| true
280 runtest program_invocation_short_name PROGRAM_INVOCATION_SHORT_NAME -D_GNU_SOURCE || true
281 runtest queue_h		QUEUE_H		|| true
282 runtest reallocarray	REALLOCARRAY	-D_OPENBSD_SOURCE	|| true
283 runtest recallocarray	RECALLOCARRAY	|| true
284 runtest setproctitle	SETPROCTITLE	|| true
285 runtest setresgid	SETRESGID	-D_GNU_SOURCE || true
286 runtest setresuid	SETRESUID	-D_GNU_SOURCE || true
287 runtest strlcat		STRLCAT		|| true
288 runtest strlcpy		STRLCPY		|| true
289 runtest strtonum	STRTONUM	-D_OPENBSD_SOURCE	|| true
290 runtest tree_h		TREE_H		|| true
291 runtest vasprintf	VASPRINTF	-D_GNU_SOURCE || true
292 runtest vis		VIS		-DLIBBSD_OPENBSD_VIS	|| true
293 
294 deptest libevent2	LIBEVENT2	|| true
295 
296 if [ ${HAVE_LIBTLS} -eq 0 ]; then
297 	echo "FATAL: libtls not found" 1>&2
298 	echo "FATAL: libtls not found" 1>&3
299 	exit 1
300 fi
301 
302 if [ ${HAVE_OPENSSL} -eq 0 ]; then
303 	echo "FATAL: openssl not found" 1>&2
304 	echo "FATAL: openssl not found" 1>&3
305 	exit 1
306 fi
307 
308 if [ ${HAVE_LIBEVENT} -eq 0 ]; then
309 	echo "FATAL: libevent not found" 1>&2
310 	echo "FATAL: libevent not found" 1>&3
311 	exit 1
312 fi
313 
314 if [ ${HAVE_IMSG} -eq 0 ]; then
315 	# compat/imsg.c is implicitly added
316 	COMPATS="$COMPATS compat/imsg-buffer.c"
317 fi
318 
319 if [ ${HAVE_QUEUE_H} -eq 0 -o ${HAVE_IMSG} -eq 0 -o ${HAVE_TREE_H} -eq 0 ]; then
320 	CFLAGS="${CFLAGS} -I ${PWD}/compat"
321 fi
322 
323 if [ ${HAVE_VIS} -eq 0 ]; then
324 	CFLAGS="${CFLAGS} -I ${PWD}/compat/vis"
325 fi
326 
327 if [ $HAVE_LIBEVENT2 -eq 1 ]; then
328 	CFLAGS="$CFLAGS -DHAVE_LIBEVENT2=1"
329 fi
330 
331 if [ $NEED_GNU_SOURCE = 1 ]; then
332 	CFLAGS="$CFLAGS -D_GNU_SOURCE"
333 fi
334 if [ $NEED_OPENBSD_SOURCE = 1 ]; then
335 	CFLAGS="$CFLAGS -D_OPENBSD_SOURCE"
336 fi
337 if [ $NEED_LIBBSD_OPENBSD_VIS = 1 ]; then
338 	CFLAGS="$CFLAGS -DLIBBSD_OPENBSD_VIS"
339 fi
340 
341 CFLAGS="${CFLAGS} ${CDIAGFLAGS}"
342 
343 exec > config.h
344 echo "config.h: writing.." >&2
345 
346 cat <<__HEREDOC__
347 #ifdef __cplusplus
348 #error "Do not use C++."
349 #endif
350 __HEREDOC__
351 
352 [ ${HAVE_STRLCAT} -eq 0 -o ${HAVE_STRLCPY} -eq 0 -o ${HAVE_IMSG} -eq 0 ] \
353 	&& echo "#include <sys/types.h>"
354 [ ${HAVE_VASPRINTF} -eq 0 ] && echo "#include <stdarg.h>"
355 
356 if [ ${HAVE_QUEUE_H} -eq 1 ]; then
357 	echo "#include <sys/queue.h>"
358 else
359 	echo "#include <queue.h>"
360 fi
361 
362 if [ ${HAVE_TREE_H} -eq 1 ]; then
363 	echo "#include <sys/tree.h>"
364 else
365 	echo "#include <tree.h>"
366 fi
367 
368 echo "#include <sys/types.h>"
369 echo "#include <sys/uio.h>"
370 echo "#include <stdint.h>"
371 echo "#include <imsg.h>"
372 echo "#include <limits.h>"
373 
374 cat <<__HEREDOC__
375 
376 #define VERSION			"${VERSION}"
377 #define DISABLE_SANDBOX		${DISABLE_SANDBOX}
378 
379 __HEREDOC__
380 
381 if [ ${HAVE_ENDIAN_H} -eq 1 ]; then
382 	echo "#include <endian.h>"
383 elif [ ${HAVE_SYS_ENDIAN_H} -eq 1 ]; then
384 	echo "#include <sys/endian.h>"
385 elif [ ${HAVE_MACHINE_ENDIAN} -eq 1 ]; then
386 	cat <<__HEREDOC__
387 #include <machine/endian.h>
388 #include <libkern/OSByteOrder.h>
389 #define htobe16(x) OSSwapHostToBigInt16(x)
390 #define htobe32(x) OSSwapHostToBigInt32(x)
391 #define htobe64(x) OSSwapHostToBigInt64(x)
392 __HEREDOC__
393 fi
394 
395 [ ${HAVE_EXPLICIT_BZERO} -eq 0 -o \
396   ${HAVE_FREEZERO} -eq 0 -o \
397   ${HAVE_REALLOCARRAY} -eq 0 -o \
398   ${HAVE_RECALLOCARRAY} -eq 0 -o \
399   ${HAVE_STRLCAT} -eq 0 -o \
400   ${HAVE_STRLCPY} -eq 0 -o \
401   ${HAVE_STRTONUM} -eq 0 ] && echo "#include <stddef.h>"
402 
403 [ ${HAVE_SETRESGID} -eq 0 -o \
404   ${HAVE_SETRESUID} -eq 0 ] && echo "#include <unistd.h>"
405 
406 if [ ${HAVE_ERR} -eq 0 ]; then
407 	echo "extern	void	 err(int, const char*, ...);"
408 	echo "extern	void	 errx(int, const char*, ...);"
409 	echo "extern	void	 warn(const char*, ...);"
410 	echo "extern	void	 warnx(const char*, ...);"
411 else
412 	echo "#include <err.h>"
413 fi
414 if [ ${HAVE_EXPLICIT_BZERO} -eq 0 ]; then
415 	echo "extern	void	 explicit_bzero(void*, size_t);"
416 fi
417 if [ ${HAVE_FREEZERO} -eq 0 ]; then
418 	echo "extern	void	 freezero(void*, size_t);"
419 fi
420 if [ ${HAVE_GETDTABLECOUNT} -eq 0 ]; then
421 	echo "extern	int	 getdtablecount(void);"
422 fi
423 if [ ${HAVE_GETDTABLESIZE} -eq 0 ]; then
424 	echo "extern	int	 getdtablesize(void);"
425 fi
426 if [ ${HAVE_GETPROGNAME} -eq 0 ]; then
427 	echo "extern	const char *getprogname(void);"
428 fi
429 if [ ${HAVE_MEMMEM} -eq 0 ]; then
430 	echo "extern void *memmem(const void *, size_t, const void *, size_t);"
431 fi
432 if [ ${HAVE_REALLOCARRAY} -eq 0 ]; then
433 	echo "extern	void	*reallocarray(void*, size_t, size_t);"
434 fi
435 if [ ${HAVE_RECALLOCARRAY} -eq 0 ]; then
436 	echo "extern	void	*recallocarray(void*, size_t, size_t, size_t);"
437 fi
438 if [ ${HAVE_SETPROCTITLE} -eq 0 ]; then
439 	echo "extern	void	 setproctitle(const char *fmt, ...);"
440 fi
441 if [ ${HAVE_SETRESGID} -eq 0 ]; then
442 	echo "extern	int	 setresgid(gid_t, gid_t, gid_t);"
443 fi
444 if [ ${HAVE_SETRESUID} -eq 0 ]; then
445 	echo "extern	int	 setresuid(uid_t, uid_t, uid_t);"
446 fi
447 if [ ${HAVE_STRLCAT} -eq 0 ]; then
448 	echo "extern	size_t	 strlcat(char*, const char*, size_t);"
449 fi
450 if [ ${HAVE_STRLCPY} -eq 0 ]; then
451 	echo "extern	size_t	 strlcpy(char*, const char*, size_t);"
452 fi
453 if [ ${HAVE_STRTONUM} -eq 0 ]; then
454 	echo "extern	long long strtonum(const char*, long long, long long, const char**);"
455 fi
456 if [ ${HAVE_VASPRINTF} -eq 0 ]; then
457 	echo "extern	int	 vasprintf(char**, const char*, va_list);"
458 fi
459 
460 cat <<__HEREDOC__
461 
462 #ifndef __dead
463 #define __dead __attribute__((noreturn))
464 #endif
465 
466 /* Linux and OpenBSD have LOGIN_NAME_MAX, FreeBSD MAXLOGNAME. */
467 #ifndef LOGIN_NAME_MAX
468 # if defined(MAXLOGNAME)
469 #  define LOGIN_NAME_MAX MAXLOGNAME
470 # elif defined(_POSIX_LOGIN_NAME_MAX)
471 #  define LOGIN_NAME_MAX _POSIX_LOGIN_NAME_MAX
472 # else
473 #  define LOGIN_NAME_MAX 32
474 # endif
475 #endif
476 
477 #ifndef HOST_NAME_MAX
478 # if defined(_POSIX_HOST_NAME_MAX)
479 #  define HOST_NAME_MAX _POSIX_HOST_NAME_MAX
480 # else
481 #  define HOST_NAME_MAX 255
482 # endif
483 #endif
484 __HEREDOC__
485 
486 echo "file config.h: written" 1>&2
487 echo "file config.h: written" 1>&3
488 
489 exec > config.mk
490 
491 [ -z "${BINDIR}"          ] && BINDIR="\${PREFIX}/bin"
492 [ -z "${MANDIR}"          ] && MANDIR="\${PREFIX}/man"
493 
494 [ -z "${INSTALL_PROGRAM}" ] && INSTALL_PROGRAM="${INSTALL} -m 0555"
495 [ -z "${INSTALL_LIB}"     ] && INSTALL_LIB="${INSTALL} -m 0444"
496 [ -z "${INSTALL_MAN}"     ] && INSTALL_MAN="${INSTALL} -m 0444"
497 [ -z "${INSTALL_DATA}"    ] && INSTALL_DATA="${INSTALL} -m 0444"
498 
499 cat << __HEREDOC__
500 CC		= ${CC}
501 CFLAGS		= ${CFLAGS}
502 LDFLAGS		= ${LDFLAGS}
503 LIBS		= ${LIBS}
504 YACC		= ${YACC}
505 STATIC		= ${STATIC}
506 PREFIX		= ${PREFIX}
507 BINDIR		= ${BINDIR}
508 MANDIR		= ${MANDIR}
509 
510 INSTALL		= install
511 INSTALL_PROGRAM	= ${INSTALL} -m 0555
512 INSTALL_LIB	= ${INSTALL} -m 0444
513 INSTALL_MAN	= ${INSTALL} -m 0444
514 INSTALL_DATA	= ${INSTALL} -m 0444
515 
516 COMPATS=	${COMPATS}
517 
518 VERSION		= ${VERSION}
519 
520 __HEREDOC__
521 
522 echo "file config.mk: written" 1>&2
523 echo "file config.mk: written" 1>&3
524 
525 echo >&2
526 echo "Now run \`make' to compile." >&2
527 echo >&2
528 
529 exit 0