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