1#!/bin/sh 2# configure script for zlib. 3# 4# Normally configure builds both a static and a shared library. 5# If you want to build just a static library, use: ./configure --static 6# 7# To impose specific compiler or flags or install directory, use for example: 8# prefix=$HOME CC=cc CFLAGS="-O4" ./configure 9# or for csh/tcsh users: 10# (setenv prefix $HOME; setenv CC cc; setenv CFLAGS "-O4"; ./configure) 11 12# Incorrect settings of CC or CFLAGS may prevent creating a shared library. 13# If you have problems, try without defining CC and CFLAGS before reporting 14# an error. 15 16# start off configure.log 17echo -------------------- >> configure.log 18echo $0 $* >> configure.log 19date >> configure.log 20 21# get source directory 22SRCDIR=`dirname $0` 23if test $SRCDIR = "."; then 24 ZINC="" 25 ZINCOUT="-I." 26 SRCDIR="" 27else 28 ZINC='-I. -include zconf.h' 29 ZINCOUT='-I. -I$(SRCDIR)' 30 SRCDIR="$SRCDIR/" 31fi 32 33# set command prefix for cross-compilation 34if [ -n "${CHOST}" ]; then 35 uname=${CHOST} 36 mname=${CHOST} 37 CROSS_PREFIX="${CHOST}-" 38else 39 mname=`(uname -a || echo unknown) 2>/dev/null` 40fi 41 42# destination name for static library 43STATICLIB=libz.a 44 45# extract zlib version numbers from zlib.h 46VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < ${SRCDIR}zlib.h` 47VER3=`echo ${VER}|sed -n -e 's/\([0-9]\{1,\}\(\\.[0-9]\{1,\}\)\{1,2\}\).*/\1/p'` 48VER1=`echo ${VER}|sed -n -e 's/\([0-9]\{1,\}\)\\..*/\1/p'` 49 50# establish commands for library building 51if "${CROSS_PREFIX}ar" --version >/dev/null 2>/dev/null || test $? -lt 126; then 52 AR=${AR-"${CROSS_PREFIX}ar"} 53 test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log 54else 55 AR=${AR-"ar"} 56 test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log 57fi 58ARFLAGS=${ARFLAGS-"rc"} 59if "${CROSS_PREFIX}ranlib" --version >/dev/null 2>/dev/null || test $? -lt 126; then 60 RANLIB=${RANLIB-"${CROSS_PREFIX}ranlib"} 61 test -n "${CROSS_PREFIX}" && echo Using ${RANLIB} | tee -a configure.log 62else 63 RANLIB=${RANLIB-"ranlib"} 64fi 65if "${CROSS_PREFIX}nm" --version >/dev/null 2>/dev/null || test $? -lt 126; then 66 NM=${NM-"${CROSS_PREFIX}nm"} 67 test -n "${CROSS_PREFIX}" && echo Using ${NM} | tee -a configure.log 68else 69 NM=${NM-"nm"} 70fi 71 72# set defaults before processing command line options 73LDCONFIG=${LDCONFIG-"ldconfig"} 74LDSHAREDLIBC="${LDSHAREDLIBC--lc}" 75ARCHS= 76prefix=${prefix-/usr/local} 77exec_prefix=${exec_prefix-'${prefix}'} 78libdir=${libdir-'${exec_prefix}/lib'} 79sharedlibdir=${sharedlibdir-'${libdir}'} 80includedir=${includedir-'${prefix}/include'} 81mandir=${mandir-'${prefix}/share/man'} 82shared_ext='.so' 83shared=1 84solo=0 85cover=0 86zprefix=0 87zconst=0 88build64=0 89gcc=0 90warn=0 91debug=0 92address=0 93memory=0 94old_cc="$CC" 95old_cflags="$CFLAGS" 96OBJC='$(OBJZ) $(OBJG)' 97PIC_OBJC='$(PIC_OBJZ) $(PIC_OBJG)' 98 99# leave this script, optionally in a bad way 100leave() 101{ 102 if test "$*" != "0"; then 103 echo "** $0 aborting." | tee -a configure.log 104 fi 105 rm -rf $test.[co] $test $test$shared_ext $test.gcno $test.dSYM ./--version 106 echo -------------------- >> configure.log 107 echo >> configure.log 108 echo >> configure.log 109 exit $1 110} 111 112# process command line options 113while test $# -ge 1 114do 115case "$1" in 116 -h* | --help) 117 echo 'usage:' | tee -a configure.log 118 echo ' configure [--const] [--zprefix] [--prefix=PREFIX] [--eprefix=EXPREFIX]' | tee -a configure.log 119 echo ' [--static] [--64] [--libdir=LIBDIR] [--sharedlibdir=LIBDIR]' | tee -a configure.log 120 echo ' [--includedir=INCLUDEDIR] [--archs="-arch i386 -arch x86_64"]' | tee -a configure.log 121 exit 0 ;; 122 -p*=* | --prefix=*) prefix=`echo $1 | sed 's/.*=//'`; shift ;; 123 -e*=* | --eprefix=*) exec_prefix=`echo $1 | sed 's/.*=//'`; shift ;; 124 -l*=* | --libdir=*) libdir=`echo $1 | sed 's/.*=//'`; shift ;; 125 --sharedlibdir=*) sharedlibdir=`echo $1 | sed 's/.*=//'`; shift ;; 126 -i*=* | --includedir=*) includedir=`echo $1 | sed 's/.*=//'`;shift ;; 127 -u*=* | --uname=*) uname=`echo $1 | sed 's/.*=//'`;shift ;; 128 -p* | --prefix) prefix="$2"; shift; shift ;; 129 -e* | --eprefix) exec_prefix="$2"; shift; shift ;; 130 -l* | --libdir) libdir="$2"; shift; shift ;; 131 -i* | --includedir) includedir="$2"; shift; shift ;; 132 -s* | --shared | --enable-shared) shared=1; shift ;; 133 -t | --static) shared=0; shift ;; 134 --solo) solo=1; shift ;; 135 --cover) cover=1; shift ;; 136 -z* | --zprefix) zprefix=1; shift ;; 137 -6* | --64) build64=1; shift ;; 138 -a*=* | --archs=*) ARCHS=`echo $1 | sed 's/.*=//'`; shift ;; 139 --sysconfdir=*) echo "ignored option: --sysconfdir" | tee -a configure.log; shift ;; 140 --localstatedir=*) echo "ignored option: --localstatedir" | tee -a configure.log; shift ;; 141 -c* | --const) zconst=1; shift ;; 142 -w* | --warn) warn=1; shift ;; 143 -d* | --debug) debug=1; shift ;; 144 --sanitize) address=1; shift ;; 145 --address) address=1; shift ;; 146 --memory) memory=1; shift ;; 147 *) 148 echo "unknown option: $1" | tee -a configure.log 149 echo "$0 --help for help" | tee -a configure.log 150 leave 1;; 151 esac 152done 153 154# temporary file name 155test=ztest$$ 156 157# put arguments in log, also put test file in log if used in arguments 158show() 159{ 160 case "$*" in 161 *$test.c*) 162 echo === $test.c === >> configure.log 163 cat $test.c >> configure.log 164 echo === >> configure.log;; 165 esac 166 echo $* >> configure.log 167} 168 169# check for gcc vs. cc and set compile and link flags based on the system identified by uname 170cat > $test.c <<EOF 171extern int getchar(); 172int hello() {return getchar();} 173EOF 174 175if test -z "$CC"; then 176 echo Checking for ${CROSS_PREFIX}gcc... | tee -a configure.log 177 if ${CROSS_PREFIX}gcc -v >/dev/null 2>&1; then 178 cc=${CROSS_PREFIX}gcc 179 else 180 cc=${CROSS_PREFIX}cc 181 fi 182else 183 cc=${CC} 184fi 185 186case "$cc" in 187 *gcc*) gcc=1 ;; 188 *clang*) gcc=1 ;; 189esac 190case `$cc -v 2>&1` in 191 *gcc*) gcc=1 ;; 192 *clang*) gcc=1 ;; 193esac 194 195show $cc -c $test.c 196if test "$gcc" -eq 1 && ($cc -c $test.c) >> configure.log 2>&1; then 197 echo ... using gcc >> configure.log 198 CC="$cc" 199 CFLAGS="${CFLAGS--O3}" 200 SFLAGS="${CFLAGS--O3} -fPIC" 201 if test "$ARCHS"; then 202 CFLAGS="${CFLAGS} ${ARCHS}" 203 LDFLAGS="${LDFLAGS} ${ARCHS}" 204 fi 205 if test $build64 -eq 1; then 206 CFLAGS="${CFLAGS} -m64" 207 SFLAGS="${SFLAGS} -m64" 208 fi 209 if test "$warn" -eq 1; then 210 if test "$zconst" -eq 1; then 211 CFLAGS="${CFLAGS} -Wall -Wextra -Wcast-qual -DZLIB_CONST" 212 else 213 CFLAGS="${CFLAGS} -Wall -Wextra" 214 fi 215 fi 216 if test $address -eq 1; then 217 CFLAGS="${CFLAGS} -g -fsanitize=address -fno-omit-frame-pointer" 218 fi 219 if test $memory -eq 1; then 220 CFLAGS="${CFLAGS} -g -fsanitize=memory -fno-omit-frame-pointer" 221 fi 222 if test $debug -eq 1; then 223 CFLAGS="${CFLAGS} -DZLIB_DEBUG" 224 SFLAGS="${SFLAGS} -DZLIB_DEBUG" 225 fi 226 if test -z "$uname"; then 227 uname=`(uname -s || echo unknown) 2>/dev/null` 228 fi 229 case "$uname" in 230 Linux* | linux* | *-linux* | GNU | GNU/* | solaris*) 231 case "$mname" in 232 *sparc*) 233 LDFLAGS="${LDFLAGS} -Wl,--no-warn-rwx-segments" ;; 234 esac 235 LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,${SRCDIR}zlib.map"} ;; 236 *BSD | *bsd* | DragonFly) 237 LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,${SRCDIR}zlib.map"} 238 LDCONFIG="ldconfig -m" ;; 239 CYGWIN* | Cygwin* | cygwin* | *-cygwin* | OS/2*) 240 EXE='.exe' ;; 241 MINGW* | mingw* | *-mingw*) 242 rm -f $test.[co] $test $test$shared_ext 243 echo "If this doesn't work for you, try win32/Makefile.gcc." | tee -a configure.log 244 LDSHARED=${LDSHARED-"$cc -shared"} 245 LDSHAREDLIBC="" 246 EXE='.exe' ;; 247 QNX*) # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4 248 # (alain.bonnefoy@icbt.com) 249 LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"} ;; 250 HP-UX*) 251 LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"} 252 case `(uname -m || echo unknown) 2>/dev/null` in 253 ia64) 254 shared_ext='.so' 255 SHAREDLIB='libz.so' ;; 256 *) 257 shared_ext='.sl' 258 SHAREDLIB='libz.sl' ;; 259 esac ;; 260 AIX*) 261 LDFLAGS="${LDFLAGS} -Wl,-brtl" ;; 262 Darwin* | darwin* | *-darwin*) 263 shared_ext='.dylib' 264 SHAREDLIB=libz$shared_ext 265 SHAREDLIBV=libz.$VER$shared_ext 266 SHAREDLIBM=libz.$VER1$shared_ext 267 LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER3"} 268 if "${CROSS_PREFIX}libtool" -V 2>&1 | grep Apple > /dev/null; then 269 AR="${CROSS_PREFIX}libtool" 270 elif libtool -V 2>&1 | grep Apple > /dev/null; then 271 AR="libtool" 272 else 273 AR="/usr/bin/libtool" 274 fi 275 ARFLAGS="-o" ;; 276 *) 277 LDSHARED=${LDSHARED-"$cc -shared"} ;; 278 esac 279else 280 # find system name and corresponding cc options 281 CC=${CC-cc} 282 gcc=0 283 echo ... using $CC >> configure.log 284 if test -z "$uname"; then 285 uname=`(uname -sr || echo unknown) 2>/dev/null` 286 fi 287 case "$uname" in 288 HP-UX*) SFLAGS=${CFLAGS-"-O +z"} 289 CFLAGS=${CFLAGS-"-O"} 290# LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"} 291 LDSHARED=${LDSHARED-"ld -b"} 292 case `(uname -m || echo unknown) 2>/dev/null` in 293 ia64) 294 shared_ext='.so' 295 SHAREDLIB='libz.so' ;; 296 *) 297 shared_ext='.sl' 298 SHAREDLIB='libz.sl' ;; 299 esac ;; 300 IRIX*) SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."} 301 CFLAGS=${CFLAGS-"-ansi -O2"} 302 LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;; 303 OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"} 304 CFLAGS=${CFLAGS-"-O -std1"} 305 LDFLAGS="${LDFLAGS} -Wl,-rpath,." 306 LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"} ;; 307 OSF1*) SFLAGS=${CFLAGS-"-O -std1"} 308 CFLAGS=${CFLAGS-"-O -std1"} 309 LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;; 310 QNX*) SFLAGS=${CFLAGS-"-4 -O"} 311 CFLAGS=${CFLAGS-"-4 -O"} 312 LDSHARED=${LDSHARED-"cc"} 313 RANLIB=${RANLIB-"true"} 314 AR="cc" 315 ARFLAGS="-A" ;; 316 SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "} 317 CFLAGS=${CFLAGS-"-O3"} 318 LDSHARED=${LDSHARED-"cc -dy -KPIC -G"} ;; 319 SunOS\ 5* | solaris*) 320 LDSHARED=${LDSHARED-"cc -G -h libz$shared_ext.$VER1"} 321 SFLAGS=${CFLAGS-"-fast -KPIC"} 322 CFLAGS=${CFLAGS-"-fast"} 323 if test $build64 -eq 1; then 324 # old versions of SunPRO/Workshop/Studio don't support -m64, 325 # but newer ones do. Check for it. 326 flag64=`$CC -flags | egrep -- '^-m64'` 327 if test x"$flag64" != x"" ; then 328 CFLAGS="${CFLAGS} -m64" 329 SFLAGS="${SFLAGS} -m64" 330 else 331 case `(uname -m || echo unknown) 2>/dev/null` in 332 i86*) 333 SFLAGS="$SFLAGS -xarch=amd64" 334 CFLAGS="$CFLAGS -xarch=amd64" ;; 335 *) 336 SFLAGS="$SFLAGS -xarch=v9" 337 CFLAGS="$CFLAGS -xarch=v9" ;; 338 esac 339 fi 340 fi 341 if test -n "$ZINC"; then 342 ZINC='-I- -I. -I$(SRCDIR)' 343 fi 344 ;; 345 SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"} 346 CFLAGS=${CFLAGS-"-O2"} 347 LDSHARED=${LDSHARED-"ld"} ;; 348 SunStudio\ 9*) SFLAGS=${CFLAGS-"-fast -xcode=pic32 -xtarget=ultra3 -xarch=v9b"} 349 CFLAGS=${CFLAGS-"-fast -xtarget=ultra3 -xarch=v9b"} 350 LDSHARED=${LDSHARED-"cc -xarch=v9b"} ;; 351 UNIX_System_V\ 4.2.0) 352 SFLAGS=${CFLAGS-"-KPIC -O"} 353 CFLAGS=${CFLAGS-"-O"} 354 LDSHARED=${LDSHARED-"cc -G"} ;; 355 UNIX_SV\ 4.2MP) 356 SFLAGS=${CFLAGS-"-Kconform_pic -O"} 357 CFLAGS=${CFLAGS-"-O"} 358 LDSHARED=${LDSHARED-"cc -G"} ;; 359 OpenUNIX\ 5) 360 SFLAGS=${CFLAGS-"-KPIC -O"} 361 CFLAGS=${CFLAGS-"-O"} 362 LDSHARED=${LDSHARED-"cc -G"} ;; 363 AIX*) # Courtesy of dbakker@arrayasolutions.com 364 SFLAGS=${CFLAGS-"-O -qmaxmem=8192"} 365 CFLAGS=${CFLAGS-"-O -qmaxmem=8192"} 366 LDSHARED=${LDSHARED-"xlc -G"} ;; 367 # send working options for other systems to zlib@gzip.org 368 *) SFLAGS=${CFLAGS-"-O"} 369 CFLAGS=${CFLAGS-"-O"} 370 LDSHARED=${LDSHARED-"cc -shared"} ;; 371 esac 372fi 373 374# destination names for shared library if not defined above 375SHAREDLIB=${SHAREDLIB-"libz$shared_ext"} 376SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"} 377SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"} 378 379echo >> configure.log 380 381# define functions for testing compiler and library characteristics and logging the results 382 383cat > $test.c <<EOF 384#error error 385EOF 386if ($CC -c $CFLAGS $test.c) 2>/dev/null; then 387 try() 388 { 389 show $* 390 test "`( $* ) 2>&1 | tee -a configure.log`" = "" 391 } 392 echo - using any output from compiler to indicate an error >> configure.log 393else 394 try() 395 { 396 show $* 397 got=`( $* ) 2>&1` 398 ret=$? 399 if test "$got" != ""; then 400 printf "%s\n" "$got" >> configure.log 401 fi 402 if test $ret -ne 0; then 403 echo "(exit code "$ret")" >> configure.log 404 fi 405 return $ret 406 } 407fi 408 409tryboth() 410{ 411 show $* 412 got=`( $* ) 2>&1` 413 ret=$? 414 if test "$got" != ""; then 415 printf "%s\n" "$got" >> configure.log 416 fi 417 if test $ret -ne 0; then 418 echo "(exit code "$ret")" >> configure.log 419 return $ret 420 fi 421 test "$got" = "" 422} 423 424cat > $test.c << EOF 425int foo() { return 0; } 426EOF 427echo "Checking for obsessive-compulsive compiler options..." >> configure.log 428if try $CC -c $CFLAGS $test.c; then 429 : 430else 431 echo "Compiler error reporting is too harsh for $0 (perhaps remove -Werror)." | tee -a configure.log 432 leave 1 433fi 434 435echo >> configure.log 436 437# see if shared library build supported 438cat > $test.c <<EOF 439extern int getchar(); 440int hello() {return getchar();} 441EOF 442if test $shared -eq 1; then 443 echo Checking for shared library support... | tee -a configure.log 444 # we must test in two steps (cc then ld), required at least on SunOS 4.x 445 if try $CC -c $SFLAGS $test.c && 446 try $LDSHARED $SFLAGS -o $test$shared_ext $test.o; then 447 echo Building shared library $SHAREDLIBV with $CC. | tee -a configure.log 448 elif test -z "$old_cc" -a -z "$old_cflags"; then 449 echo No shared library support. | tee -a configure.log 450 shared=0; 451 else 452 echo 'No shared library support; try without defining CC and CFLAGS' | tee -a configure.log 453 shared=0; 454 fi 455fi 456if test $shared -eq 0; then 457 LDSHARED="$CC" 458 ALL="static" 459 TEST="all teststatic" 460 SHAREDLIB="" 461 SHAREDLIBV="" 462 SHAREDLIBM="" 463 echo Building static library $STATICLIB version $VER with $CC. | tee -a configure.log 464else 465 ALL="static shared" 466 TEST="all teststatic testshared" 467fi 468 469echo >> configure.log 470 471# check for size_t 472cat > $test.c <<EOF 473#include <stdio.h> 474#include <stdlib.h> 475size_t dummy = 0; 476EOF 477if try $CC -c $CFLAGS $test.c; then 478 echo "Checking for size_t... Yes." | tee -a configure.log 479else 480 echo "Checking for size_t... No." | tee -a configure.log 481 # find a size_t integer type 482 # check for long long 483 cat > $test.c << EOF 484long long dummy = 0; 485EOF 486 if try $CC -c $CFLAGS $test.c; then 487 echo "Checking for long long... Yes." | tee -a configure.log 488 cat > $test.c <<EOF 489#include <stdio.h> 490int main(void) { 491 if (sizeof(void *) <= sizeof(int)) puts("int"); 492 else if (sizeof(void *) <= sizeof(long)) puts("long"); 493 else puts("z_longlong"); 494 return 0; 495} 496EOF 497 else 498 echo "Checking for long long... No." | tee -a configure.log 499 cat > $test.c <<EOF 500#include <stdio.h> 501int main(void) { 502 if (sizeof(void *) <= sizeof(int)) puts("int"); 503 else puts("long"); 504 return 0; 505} 506EOF 507 fi 508 if try $CC $CFLAGS -o $test $test.c; then 509 sizet=`./$test` 510 echo "Checking for a pointer-size integer type..." $sizet"." | tee -a configure.log 511 CFLAGS="${CFLAGS} -DNO_SIZE_T=${sizet}" 512 SFLAGS="${SFLAGS} -DNO_SIZE_T=${sizet}" 513 else 514 echo "Checking for a pointer-size integer type... not found." | tee -a configure.log 515 fi 516fi 517 518echo >> configure.log 519 520# check for large file support, and if none, check for fseeko() 521cat > $test.c <<EOF 522#include <sys/types.h> 523off64_t dummy = 0; 524EOF 525if try $CC -c $CFLAGS -D_LARGEFILE64_SOURCE=1 $test.c; then 526 CFLAGS="${CFLAGS} -D_LARGEFILE64_SOURCE=1" 527 SFLAGS="${SFLAGS} -D_LARGEFILE64_SOURCE=1" 528 ALL="${ALL} all64" 529 TEST="${TEST} test64" 530 echo "Checking for off64_t... Yes." | tee -a configure.log 531 echo "Checking for fseeko... Yes." | tee -a configure.log 532else 533 echo "Checking for off64_t... No." | tee -a configure.log 534 echo >> configure.log 535 cat > $test.c <<EOF 536#include <stdio.h> 537int main(void) { 538 fseeko(NULL, 0, 0); 539 return 0; 540} 541EOF 542 if try $CC $CFLAGS -o $test $test.c; then 543 echo "Checking for fseeko... Yes." | tee -a configure.log 544 else 545 CFLAGS="${CFLAGS} -DNO_FSEEKO" 546 SFLAGS="${SFLAGS} -DNO_FSEEKO" 547 echo "Checking for fseeko... No." | tee -a configure.log 548 fi 549fi 550 551echo >> configure.log 552 553# check for strerror() for use by gz* functions 554cat > $test.c <<EOF 555#include <string.h> 556#include <errno.h> 557int main() { return strlen(strerror(errno)); } 558EOF 559if try $CC $CFLAGS -o $test $test.c; then 560 echo "Checking for strerror... Yes." | tee -a configure.log 561else 562 CFLAGS="${CFLAGS} -DNO_STRERROR" 563 SFLAGS="${SFLAGS} -DNO_STRERROR" 564 echo "Checking for strerror... No." | tee -a configure.log 565fi 566 567# copy clean zconf.h for subsequent edits 568cp -p ${SRCDIR}zconf.h.in zconf.h 569 570echo >> configure.log 571 572# check for unistd.h and save result in zconf.h 573cat > $test.c <<EOF 574#include <unistd.h> 575int main() { return 0; } 576EOF 577if try $CC -c $CFLAGS $test.c; then 578 sed < zconf.h "/^#ifdef HAVE_UNISTD_H.* may be/s/def HAVE_UNISTD_H\(.*\) may be/ 1\1 was/" > zconf.temp.h 579 mv zconf.temp.h zconf.h 580 echo "Checking for unistd.h... Yes." | tee -a configure.log 581else 582 echo "Checking for unistd.h... No." | tee -a configure.log 583fi 584 585echo >> configure.log 586 587# check for stdarg.h and save result in zconf.h 588cat > $test.c <<EOF 589#include <stdarg.h> 590int main() { return 0; } 591EOF 592if try $CC -c $CFLAGS $test.c; then 593 sed < zconf.h "/^#ifdef HAVE_STDARG_H.* may be/s/def HAVE_STDARG_H\(.*\) may be/ 1\1 was/" > zconf.temp.h 594 mv zconf.temp.h zconf.h 595 echo "Checking for stdarg.h... Yes." | tee -a configure.log 596else 597 echo "Checking for stdarg.h... No." | tee -a configure.log 598fi 599 600# if the z_ prefix was requested, save that in zconf.h 601if test $zprefix -eq 1; then 602 sed < zconf.h "/#ifdef Z_PREFIX.* may be/s/def Z_PREFIX\(.*\) may be/ 1\1 was/" > zconf.temp.h 603 mv zconf.temp.h zconf.h 604 echo >> configure.log 605 echo "Using z_ prefix on all symbols." | tee -a configure.log 606fi 607 608# if --solo compilation was requested, save that in zconf.h and remove gz stuff from object lists 609if test $solo -eq 1; then 610 sed '/#define ZCONF_H/a\ 611#define Z_SOLO 612 613' < zconf.h > zconf.temp.h 614 mv zconf.temp.h zconf.h 615OBJC='$(OBJZ)' 616PIC_OBJC='$(PIC_OBJZ)' 617fi 618 619# if code coverage testing was requested, use older gcc if defined, e.g. "gcc-4.2" on Mac OS X 620if test $cover -eq 1; then 621 CFLAGS="${CFLAGS} -fprofile-arcs -ftest-coverage" 622 if test -n "$GCC_CLASSIC"; then 623 CC=$GCC_CLASSIC 624 fi 625fi 626 627echo >> configure.log 628 629# conduct a series of tests to resolve eight possible cases of using "vs" or "s" printf functions 630# (using stdarg or not), with or without "n" (proving size of buffer), and with or without a 631# return value. The most secure result is vsnprintf() with a return value. snprintf() with a 632# return value is secure as well, but then gzprintf() will be limited to 20 arguments. 633cat > $test.c <<EOF 634#include <stdio.h> 635#include <stdarg.h> 636#include "zconf.h" 637int main() 638{ 639#ifndef STDC 640 choke me 641#endif 642 return 0; 643} 644EOF 645if try $CC -c $CFLAGS $test.c; then 646 echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()." | tee -a configure.log 647 648 echo >> configure.log 649 cat > $test.c <<EOF 650#include <stdio.h> 651#include <stdarg.h> 652int mytest(const char *fmt, ...) 653{ 654 char buf[20]; 655 va_list ap; 656 va_start(ap, fmt); 657 vsnprintf(buf, sizeof(buf), fmt, ap); 658 va_end(ap); 659 return 0; 660} 661int main() 662{ 663 return (mytest("Hello%d\n", 1)); 664} 665EOF 666 if try $CC $CFLAGS -o $test $test.c; then 667 echo "Checking for vsnprintf() in stdio.h... Yes." | tee -a configure.log 668 669 echo >> configure.log 670 cat >$test.c <<EOF 671#include <stdio.h> 672#include <stdarg.h> 673int mytest(const char *fmt, ...) 674{ 675 int n; 676 char buf[20]; 677 va_list ap; 678 va_start(ap, fmt); 679 n = vsnprintf(buf, sizeof(buf), fmt, ap); 680 va_end(ap); 681 return n; 682} 683int main() 684{ 685 return (mytest("Hello%d\n", 1)); 686} 687EOF 688 689 if try $CC -c $CFLAGS $test.c; then 690 echo "Checking for return value of vsnprintf()... Yes." | tee -a configure.log 691 else 692 CFLAGS="$CFLAGS -DHAS_vsnprintf_void" 693 SFLAGS="$SFLAGS -DHAS_vsnprintf_void" 694 echo "Checking for return value of vsnprintf()... No." | tee -a configure.log 695 echo " WARNING: apparently vsnprintf() does not return a value. zlib" | tee -a configure.log 696 echo " can build but will be open to possible string-format security" | tee -a configure.log 697 echo " vulnerabilities." | tee -a configure.log 698 fi 699 else 700 CFLAGS="$CFLAGS -DNO_vsnprintf" 701 SFLAGS="$SFLAGS -DNO_vsnprintf" 702 echo "Checking for vsnprintf() in stdio.h... No." | tee -a configure.log 703 echo " WARNING: vsnprintf() not found, falling back to vsprintf(). zlib" | tee -a configure.log 704 echo " can build but will be open to possible buffer-overflow security" | tee -a configure.log 705 echo " vulnerabilities." | tee -a configure.log 706 707 echo >> configure.log 708 cat >$test.c <<EOF 709#include <stdio.h> 710#include <stdarg.h> 711int mytest(const char *fmt, ...) 712{ 713 int n; 714 char buf[20]; 715 va_list ap; 716 va_start(ap, fmt); 717 n = vsprintf(buf, fmt, ap); 718 va_end(ap); 719 return n; 720} 721int main() 722{ 723 return (mytest("Hello%d\n", 1)); 724} 725EOF 726 727 if try $CC -c $CFLAGS $test.c; then 728 echo "Checking for return value of vsprintf()... Yes." | tee -a configure.log 729 else 730 CFLAGS="$CFLAGS -DHAS_vsprintf_void" 731 SFLAGS="$SFLAGS -DHAS_vsprintf_void" 732 echo "Checking for return value of vsprintf()... No." | tee -a configure.log 733 echo " WARNING: apparently vsprintf() does not return a value. zlib" | tee -a configure.log 734 echo " can build but will be open to possible string-format security" | tee -a configure.log 735 echo " vulnerabilities." | tee -a configure.log 736 fi 737 fi 738else 739 echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()." | tee -a configure.log 740 741 echo >> configure.log 742 cat >$test.c <<EOF 743#include <stdio.h> 744int mytest() 745{ 746 char buf[20]; 747 snprintf(buf, sizeof(buf), "%s", "foo"); 748 return 0; 749} 750int main() 751{ 752 return (mytest()); 753} 754EOF 755 756 if try $CC $CFLAGS -o $test $test.c; then 757 echo "Checking for snprintf() in stdio.h... Yes." | tee -a configure.log 758 759 echo >> configure.log 760 cat >$test.c <<EOF 761#include <stdio.h> 762int mytest() 763{ 764 char buf[20]; 765 return snprintf(buf, sizeof(buf), "%s", "foo"); 766} 767int main() 768{ 769 return (mytest()); 770} 771EOF 772 773 if try $CC -c $CFLAGS $test.c; then 774 echo "Checking for return value of snprintf()... Yes." | tee -a configure.log 775 else 776 CFLAGS="$CFLAGS -DHAS_snprintf_void" 777 SFLAGS="$SFLAGS -DHAS_snprintf_void" 778 echo "Checking for return value of snprintf()... No." | tee -a configure.log 779 echo " WARNING: apparently snprintf() does not return a value. zlib" | tee -a configure.log 780 echo " can build but will be open to possible string-format security" | tee -a configure.log 781 echo " vulnerabilities." | tee -a configure.log 782 fi 783 else 784 CFLAGS="$CFLAGS -DNO_snprintf" 785 SFLAGS="$SFLAGS -DNO_snprintf" 786 echo "Checking for snprintf() in stdio.h... No." | tee -a configure.log 787 echo " WARNING: snprintf() not found, falling back to sprintf(). zlib" | tee -a configure.log 788 echo " can build but will be open to possible buffer-overflow security" | tee -a configure.log 789 echo " vulnerabilities." | tee -a configure.log 790 791 echo >> configure.log 792 cat >$test.c <<EOF 793#include <stdio.h> 794int mytest() 795{ 796 char buf[20]; 797 return sprintf(buf, "%s", "foo"); 798} 799int main() 800{ 801 return (mytest()); 802} 803EOF 804 805 if try $CC -c $CFLAGS $test.c; then 806 echo "Checking for return value of sprintf()... Yes." | tee -a configure.log 807 else 808 CFLAGS="$CFLAGS -DHAS_sprintf_void" 809 SFLAGS="$SFLAGS -DHAS_sprintf_void" 810 echo "Checking for return value of sprintf()... No." | tee -a configure.log 811 echo " WARNING: apparently sprintf() does not return a value. zlib" | tee -a configure.log 812 echo " can build but will be open to possible string-format security" | tee -a configure.log 813 echo " vulnerabilities." | tee -a configure.log 814 fi 815 fi 816fi 817 818# see if we can hide zlib internal symbols that are linked between separate source files 819if test "$gcc" -eq 1; then 820 echo >> configure.log 821 cat > $test.c <<EOF 822#define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) 823int ZLIB_INTERNAL foo; 824int main() 825{ 826 return 0; 827} 828EOF 829 if tryboth $CC -c $CFLAGS $test.c; then 830 CFLAGS="$CFLAGS -DHAVE_HIDDEN" 831 SFLAGS="$SFLAGS -DHAVE_HIDDEN" 832 echo "Checking for attribute(visibility) support... Yes." | tee -a configure.log 833 else 834 echo "Checking for attribute(visibility) support... No." | tee -a configure.log 835 fi 836fi 837 838# show the results in the log 839echo >> configure.log 840echo ALL = $ALL >> configure.log 841echo AR = $AR >> configure.log 842echo ARFLAGS = $ARFLAGS >> configure.log 843echo CC = $CC >> configure.log 844echo CFLAGS = $CFLAGS >> configure.log 845echo CPP = $CPP >> configure.log 846echo EXE = $EXE >> configure.log 847echo LDCONFIG = $LDCONFIG >> configure.log 848echo LDFLAGS = $LDFLAGS >> configure.log 849echo LDSHARED = $LDSHARED >> configure.log 850echo LDSHAREDLIBC = $LDSHAREDLIBC >> configure.log 851echo OBJC = $OBJC >> configure.log 852echo PIC_OBJC = $PIC_OBJC >> configure.log 853echo RANLIB = $RANLIB >> configure.log 854echo SFLAGS = $SFLAGS >> configure.log 855echo SHAREDLIB = $SHAREDLIB >> configure.log 856echo SHAREDLIBM = $SHAREDLIBM >> configure.log 857echo SHAREDLIBV = $SHAREDLIBV >> configure.log 858echo STATICLIB = $STATICLIB >> configure.log 859echo TEST = $TEST >> configure.log 860echo VER = $VER >> configure.log 861echo SRCDIR = $SRCDIR >> configure.log 862echo exec_prefix = $exec_prefix >> configure.log 863echo includedir = $includedir >> configure.log 864echo libdir = $libdir >> configure.log 865echo mandir = $mandir >> configure.log 866echo prefix = $prefix >> configure.log 867echo sharedlibdir = $sharedlibdir >> configure.log 868echo uname = $uname >> configure.log 869 870# update Makefile with the configure results 871sed < ${SRCDIR}Makefile.in " 872/^CC *=/s#=.*#=$CC# 873/^CFLAGS *=/s#=.*#=$CFLAGS# 874/^SFLAGS *=/s#=.*#=$SFLAGS# 875/^LDFLAGS *=/s#=.*#=$LDFLAGS# 876/^LDSHARED *=/s#=.*#=$LDSHARED# 877/^CPP *=/s#=.*#=$CPP# 878/^STATICLIB *=/s#=.*#=$STATICLIB# 879/^SHAREDLIB *=/s#=.*#=$SHAREDLIB# 880/^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV# 881/^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM# 882/^AR *=/s#=.*#=$AR# 883/^ARFLAGS *=/s#=.*#=$ARFLAGS# 884/^RANLIB *=/s#=.*#=$RANLIB# 885/^LDCONFIG *=/s#=.*#=$LDCONFIG# 886/^LDSHAREDLIBC *=/s#=.*#=$LDSHAREDLIBC# 887/^EXE *=/s#=.*#=$EXE# 888/^SRCDIR *=/s#=.*#=$SRCDIR# 889/^ZINC *=/s#=.*#=$ZINC# 890/^ZINCOUT *=/s#=.*#=$ZINCOUT# 891/^prefix *=/s#=.*#=$prefix# 892/^exec_prefix *=/s#=.*#=$exec_prefix# 893/^libdir *=/s#=.*#=$libdir# 894/^sharedlibdir *=/s#=.*#=$sharedlibdir# 895/^includedir *=/s#=.*#=$includedir# 896/^mandir *=/s#=.*#=$mandir# 897/^OBJC *=/s#=.*#= $OBJC# 898/^PIC_OBJC *=/s#=.*#= $PIC_OBJC# 899/^all: */s#:.*#: $ALL# 900/^test: */s#:.*#: $TEST# 901" > Makefile 902 903# create zlib.pc with the configure results 904sed < ${SRCDIR}zlib.pc.in " 905/^CC *=/s#=.*#=$CC# 906/^CFLAGS *=/s#=.*#=$CFLAGS# 907/^CPP *=/s#=.*#=$CPP# 908/^LDSHARED *=/s#=.*#=$LDSHARED# 909/^STATICLIB *=/s#=.*#=$STATICLIB# 910/^SHAREDLIB *=/s#=.*#=$SHAREDLIB# 911/^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV# 912/^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM# 913/^AR *=/s#=.*#=$AR# 914/^ARFLAGS *=/s#=.*#=$ARFLAGS# 915/^RANLIB *=/s#=.*#=$RANLIB# 916/^EXE *=/s#=.*#=$EXE# 917/^prefix *=/s#=.*#=$prefix# 918/^exec_prefix *=/s#=.*#=$exec_prefix# 919/^libdir *=/s#=.*#=$libdir# 920/^sharedlibdir *=/s#=.*#=$sharedlibdir# 921/^includedir *=/s#=.*#=$includedir# 922/^mandir *=/s#=.*#=$mandir# 923/^LDFLAGS *=/s#=.*#=$LDFLAGS# 924" | sed -e " 925s/\@VERSION\@/$VER/g; 926" > zlib.pc 927 928# done 929leave 0 930