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