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 $* >> configure.log 19date >> configure.log 20 21# set command prefix for cross-compilation 22if [ -n "${CHOST}" ]; then 23 uname="`echo "${CHOST}" | sed -e 's/^[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)-.*$/\1/'`" 24 CROSS_PREFIX="${CHOST}-" 25fi 26 27# destination name for static library 28STATICLIB=libz.a 29 30# extract zlib version numbers from zlib.h 31VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h` 32VER3=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\\.[0-9]*\).*/\1/p' < zlib.h` 33VER2=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\)\\..*/\1/p' < zlib.h` 34VER1=`sed -n -e '/VERSION "/s/.*"\([0-9]*\)\\..*/\1/p' < zlib.h` 35 36# establish commands for library building 37if "${CROSS_PREFIX}ar" --version >/dev/null 2>/dev/null || test $? -lt 126; then 38 AR=${AR-"${CROSS_PREFIX}ar"} 39 test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log 40else 41 AR=${AR-"ar"} 42 test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log 43fi 44ARFLAGS=${ARFLAGS-"rc"} 45if "${CROSS_PREFIX}ranlib" --version >/dev/null 2>/dev/null || test $? -lt 126; then 46 RANLIB=${RANLIB-"${CROSS_PREFIX}ranlib"} 47 test -n "${CROSS_PREFIX}" && echo Using ${RANLIB} | tee -a configure.log 48else 49 RANLIB=${RANLIB-"ranlib"} 50fi 51if "${CROSS_PREFIX}nm" --version >/dev/null 2>/dev/null || test $? -lt 126; then 52 NM=${NM-"${CROSS_PREFIX}nm"} 53 test -n "${CROSS_PREFIX}" && echo Using ${NM} | tee -a configure.log 54else 55 NM=${NM-"nm"} 56fi 57 58# set defaults before processing command line options 59LDCONFIG=${LDCONFIG-"ldconfig"} 60LDSHAREDLIBC="${LDSHAREDLIBC--lc}" 61ARCHS= 62prefix=${prefix-/usr/local} 63exec_prefix=${exec_prefix-'${prefix}'} 64libdir=${libdir-'${exec_prefix}/lib'} 65sharedlibdir=${sharedlibdir-'${libdir}'} 66includedir=${includedir-'${prefix}/include'} 67mandir=${mandir-'${prefix}/share/man'} 68shared_ext='.so' 69shared=1 70solo=0 71cover=0 72zprefix=0 73zconst=0 74build64=0 75gcc=0 76old_cc="$CC" 77old_cflags="$CFLAGS" 78OBJC='$(OBJZ) $(OBJG)' 79PIC_OBJC='$(PIC_OBJZ) $(PIC_OBJG)' 80 81# leave this script, optionally in a bad way 82leave() 83{ 84 if test "$*" != "0"; then 85 echo "** $0 aborting." | tee -a configure.log 86 fi 87 rm -f $test.[co] $test $test$shared_ext $test.gcno ./--version 88 echo -------------------- >> configure.log 89 echo >> configure.log 90 echo >> configure.log 91 exit $1 92} 93 94# process command line options 95while test $# -ge 1 96do 97case "$1" in 98 -h* | --help) 99 echo 'usage:' | tee -a configure.log 100 echo ' configure [--const] [--zprefix] [--prefix=PREFIX] [--eprefix=EXPREFIX]' | tee -a configure.log 101 echo ' [--static] [--64] [--libdir=LIBDIR] [--sharedlibdir=LIBDIR]' | tee -a configure.log 102 echo ' [--includedir=INCLUDEDIR] [--archs="-arch i386 -arch x86_64"]' | tee -a configure.log 103 exit 0 ;; 104 -p*=* | --prefix=*) prefix=`echo $1 | sed 's/.*=//'`; shift ;; 105 -e*=* | --eprefix=*) exec_prefix=`echo $1 | sed 's/.*=//'`; shift ;; 106 -l*=* | --libdir=*) libdir=`echo $1 | sed 's/.*=//'`; shift ;; 107 --sharedlibdir=*) sharedlibdir=`echo $1 | sed 's/.*=//'`; shift ;; 108 -i*=* | --includedir=*) includedir=`echo $1 | sed 's/.*=//'`;shift ;; 109 -u*=* | --uname=*) uname=`echo $1 | sed 's/.*=//'`;shift ;; 110 -p* | --prefix) prefix="$2"; shift; shift ;; 111 -e* | --eprefix) exec_prefix="$2"; shift; shift ;; 112 -l* | --libdir) libdir="$2"; shift; shift ;; 113 -i* | --includedir) includedir="$2"; shift; shift ;; 114 -s* | --shared | --enable-shared) shared=1; shift ;; 115 -t | --static) shared=0; shift ;; 116 --solo) solo=1; shift ;; 117 --cover) cover=1; shift ;; 118 -z* | --zprefix) zprefix=1; shift ;; 119 -6* | --64) build64=1; shift ;; 120 -a*=* | --archs=*) ARCHS=`echo $1 | sed 's/.*=//'`; shift ;; 121 --sysconfdir=*) echo "ignored option: --sysconfdir" | tee -a configure.log; shift ;; 122 --localstatedir=*) echo "ignored option: --localstatedir" | tee -a configure.log; shift ;; 123 -c* | --const) zconst=1; shift ;; 124 *) 125 echo "unknown option: $1" | tee -a configure.log 126 echo "$0 --help for help" | tee -a configure.log 127 leave 1;; 128 esac 129done 130 131# temporary file name 132test=ztest$$ 133 134# put arguments in log, also put test file in log if used in arguments 135show() 136{ 137 case "$*" in 138 *$test.c*) 139 echo === $test.c === >> configure.log 140 cat $test.c >> configure.log 141 echo === >> configure.log;; 142 esac 143 echo $* >> configure.log 144} 145 146# check for gcc vs. cc and set compile and link flags based on the system identified by uname 147cat > $test.c <<EOF 148extern int getchar(); 149int hello() {return getchar();} 150EOF 151 152test -z "$CC" && echo Checking for ${CROSS_PREFIX}gcc... | tee -a configure.log 153cc=${CC-${CROSS_PREFIX}gcc} 154cflags=${CFLAGS-"-O3"} 155# to force the asm version use: CFLAGS="-O3 -DASMV" ./configure 156case "$cc" in 157 *gcc*) gcc=1 ;; 158 *clang*) gcc=1 ;; 159esac 160case `$cc -v 2>&1` in 161 *gcc*) gcc=1 ;; 162esac 163 164show $cc -c $test.c 165if test "$gcc" -eq 1 && ($cc -c $test.c) >> configure.log 2>&1; then 166 echo ... using gcc >> configure.log 167 CC="$cc" 168 CFLAGS="${CFLAGS--O3} ${ARCHS}" 169 SFLAGS="${CFLAGS--O3} -fPIC" 170 LDFLAGS="${LDFLAGS} ${ARCHS}" 171 if test $build64 -eq 1; then 172 CFLAGS="${CFLAGS} -m64" 173 SFLAGS="${SFLAGS} -m64" 174 fi 175 if test "${ZLIBGCCWARN}" = "YES"; then 176 if test "$zconst" -eq 1; then 177 CFLAGS="${CFLAGS} -Wall -Wextra -Wcast-qual -pedantic -DZLIB_CONST" 178 else 179 CFLAGS="${CFLAGS} -Wall -Wextra -pedantic" 180 fi 181 fi 182 if test -z "$uname"; then 183 uname=`(uname -s || echo unknown) 2>/dev/null` 184 fi 185 case "$uname" in 186 Linux* | linux* | GNU | GNU/* | solaris*) 187 LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,zlib.map"} ;; 188 *BSD | *bsd* | DragonFly) 189 LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,zlib.map"} 190 LDCONFIG="ldconfig -m" ;; 191 CYGWIN* | Cygwin* | cygwin* | OS/2*) 192 EXE='.exe' ;; 193 MINGW* | mingw*) 194# temporary bypass 195 rm -f $test.[co] $test $test$shared_ext 196 echo "Please use win32/Makefile.gcc instead." | tee -a configure.log 197 leave 1 198 LDSHARED=${LDSHARED-"$cc -shared"} 199 LDSHAREDLIBC="" 200 EXE='.exe' ;; 201 QNX*) # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4 202 # (alain.bonnefoy@icbt.com) 203 LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"} ;; 204 HP-UX*) 205 LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"} 206 case `(uname -m || echo unknown) 2>/dev/null` in 207 ia64) 208 shared_ext='.so' 209 SHAREDLIB='libz.so' ;; 210 *) 211 shared_ext='.sl' 212 SHAREDLIB='libz.sl' ;; 213 esac ;; 214 Darwin* | darwin*) 215 shared_ext='.dylib' 216 SHAREDLIB=libz$shared_ext 217 SHAREDLIBV=libz.$VER$shared_ext 218 SHAREDLIBM=libz.$VER1$shared_ext 219 LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER3"} 220 if libtool -V 2>&1 | grep Apple > /dev/null; then 221 AR="libtool" 222 else 223 AR="/usr/bin/libtool" 224 fi 225 ARFLAGS="-o" ;; 226 *) LDSHARED=${LDSHARED-"$cc -shared"} ;; 227 esac 228else 229 # find system name and corresponding cc options 230 CC=${CC-cc} 231 gcc=0 232 echo ... using $CC >> configure.log 233 if test -z "$uname"; then 234 uname=`(uname -sr || echo unknown) 2>/dev/null` 235 fi 236 case "$uname" in 237 HP-UX*) SFLAGS=${CFLAGS-"-O +z"} 238 CFLAGS=${CFLAGS-"-O"} 239# LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"} 240 LDSHARED=${LDSHARED-"ld -b"} 241 case `(uname -m || echo unknown) 2>/dev/null` in 242 ia64) 243 shared_ext='.so' 244 SHAREDLIB='libz.so' ;; 245 *) 246 shared_ext='.sl' 247 SHAREDLIB='libz.sl' ;; 248 esac ;; 249 IRIX*) SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."} 250 CFLAGS=${CFLAGS-"-ansi -O2"} 251 LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;; 252 OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"} 253 CFLAGS=${CFLAGS-"-O -std1"} 254 LDFLAGS="${LDFLAGS} -Wl,-rpath,." 255 LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"} ;; 256 OSF1*) SFLAGS=${CFLAGS-"-O -std1"} 257 CFLAGS=${CFLAGS-"-O -std1"} 258 LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;; 259 QNX*) SFLAGS=${CFLAGS-"-4 -O"} 260 CFLAGS=${CFLAGS-"-4 -O"} 261 LDSHARED=${LDSHARED-"cc"} 262 RANLIB=${RANLIB-"true"} 263 AR="cc" 264 ARFLAGS="-A" ;; 265 SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "} 266 CFLAGS=${CFLAGS-"-O3"} 267 LDSHARED=${LDSHARED-"cc -dy -KPIC -G"} ;; 268 SunOS\ 5* | solaris*) 269 LDSHARED=${LDSHARED-"cc -G -h libz$shared_ext.$VER1"} 270 SFLAGS=${CFLAGS-"-fast -KPIC"} 271 CFLAGS=${CFLAGS-"-fast"} 272 if test $build64 -eq 1; then 273 # old versions of SunPRO/Workshop/Studio don't support -m64, 274 # but newer ones do. Check for it. 275 flag64=`$CC -flags | egrep -- '^-m64'` 276 if test x"$flag64" != x"" ; then 277 CFLAGS="${CFLAGS} -m64" 278 SFLAGS="${SFLAGS} -m64" 279 else 280 case `(uname -m || echo unknown) 2>/dev/null` in 281 i86*) 282 SFLAGS="$SFLAGS -xarch=amd64" 283 CFLAGS="$CFLAGS -xarch=amd64" ;; 284 *) 285 SFLAGS="$SFLAGS -xarch=v9" 286 CFLAGS="$CFLAGS -xarch=v9" ;; 287 esac 288 fi 289 fi 290 ;; 291 SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"} 292 CFLAGS=${CFLAGS-"-O2"} 293 LDSHARED=${LDSHARED-"ld"} ;; 294 SunStudio\ 9*) SFLAGS=${CFLAGS-"-fast -xcode=pic32 -xtarget=ultra3 -xarch=v9b"} 295 CFLAGS=${CFLAGS-"-fast -xtarget=ultra3 -xarch=v9b"} 296 LDSHARED=${LDSHARED-"cc -xarch=v9b"} ;; 297 UNIX_System_V\ 4.2.0) 298 SFLAGS=${CFLAGS-"-KPIC -O"} 299 CFLAGS=${CFLAGS-"-O"} 300 LDSHARED=${LDSHARED-"cc -G"} ;; 301 UNIX_SV\ 4.2MP) 302 SFLAGS=${CFLAGS-"-Kconform_pic -O"} 303 CFLAGS=${CFLAGS-"-O"} 304 LDSHARED=${LDSHARED-"cc -G"} ;; 305 OpenUNIX\ 5) 306 SFLAGS=${CFLAGS-"-KPIC -O"} 307 CFLAGS=${CFLAGS-"-O"} 308 LDSHARED=${LDSHARED-"cc -G"} ;; 309 AIX*) # Courtesy of dbakker@arrayasolutions.com 310 SFLAGS=${CFLAGS-"-O -qmaxmem=8192"} 311 CFLAGS=${CFLAGS-"-O -qmaxmem=8192"} 312 LDSHARED=${LDSHARED-"xlc -G"} ;; 313 # send working options for other systems to zlib@gzip.org 314 *) SFLAGS=${CFLAGS-"-O"} 315 CFLAGS=${CFLAGS-"-O"} 316 LDSHARED=${LDSHARED-"cc -shared"} ;; 317 esac 318fi 319 320# destination names for shared library if not defined above 321SHAREDLIB=${SHAREDLIB-"libz$shared_ext"} 322SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"} 323SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"} 324 325echo >> configure.log 326 327# define functions for testing compiler and library characteristics and logging the results 328 329cat > $test.c <<EOF 330#error error 331EOF 332if ($CC -c $CFLAGS $test.c) 2>/dev/null; then 333 try() 334 { 335 show $* 336 test "`( $* ) 2>&1 | tee -a configure.log`" = "" 337 } 338 echo - using any output from compiler to indicate an error >> configure.log 339else 340try() 341{ 342 show $* 343 ( $* ) >> configure.log 2>&1 344 ret=$? 345 if test $ret -ne 0; then 346 echo "(exit code "$ret")" >> configure.log 347 fi 348 return $ret 349} 350fi 351 352tryboth() 353{ 354 show $* 355 got=`( $* ) 2>&1` 356 ret=$? 357 printf %s "$got" >> configure.log 358 if test $ret -ne 0; then 359 return $ret 360 fi 361 test "$got" = "" 362} 363 364cat > $test.c << EOF 365int foo() { return 0; } 366EOF 367echo "Checking for obsessive-compulsive compiler options..." >> configure.log 368if try $CC -c $CFLAGS $test.c; then 369 : 370else 371 echo "Compiler error reporting is too harsh for $0 (perhaps remove -Werror)." | tee -a configure.log 372 leave 1 373fi 374 375echo >> configure.log 376 377# see if shared library build supported 378cat > $test.c <<EOF 379extern int getchar(); 380int hello() {return getchar();} 381EOF 382if test $shared -eq 1; then 383 echo Checking for shared library support... | tee -a configure.log 384 # we must test in two steps (cc then ld), required at least on SunOS 4.x 385 if try $CC -w -c $SFLAGS $test.c && 386 try $LDSHARED $SFLAGS -o $test$shared_ext $test.o; then 387 echo Building shared library $SHAREDLIBV with $CC. | tee -a configure.log 388 elif test -z "$old_cc" -a -z "$old_cflags"; then 389 echo No shared library support. | tee -a configure.log 390 shared=0; 391 else 392 echo 'No shared library support; try without defining CC and CFLAGS' | tee -a configure.log 393 shared=0; 394 fi 395fi 396if test $shared -eq 0; then 397 LDSHARED="$CC" 398 ALL="static" 399 TEST="all teststatic" 400 SHAREDLIB="" 401 SHAREDLIBV="" 402 SHAREDLIBM="" 403 echo Building static library $STATICLIB version $VER with $CC. | tee -a configure.log 404else 405 ALL="static shared" 406 TEST="all teststatic testshared" 407fi 408 409# check for underscores in external names for use by assembler code 410CPP=${CPP-"$CC -E"} 411case $CFLAGS in 412 *ASMV*) 413 echo >> configure.log 414 show "$NM $test.o | grep _hello" 415 if test "`$NM $test.o | grep _hello | tee -a configure.log`" = ""; then 416 CPP="$CPP -DNO_UNDERLINE" 417 echo Checking for underline in external names... No. | tee -a configure.log 418 else 419 echo Checking for underline in external names... Yes. | tee -a configure.log 420 fi ;; 421esac 422 423echo >> configure.log 424 425# check for large file support, and if none, check for fseeko() 426cat > $test.c <<EOF 427#include <sys/types.h> 428off64_t dummy = 0; 429EOF 430if try $CC -c $CFLAGS -D_LARGEFILE64_SOURCE=1 $test.c; then 431 CFLAGS="${CFLAGS} -D_LARGEFILE64_SOURCE=1" 432 SFLAGS="${SFLAGS} -D_LARGEFILE64_SOURCE=1" 433 ALL="${ALL} all64" 434 TEST="${TEST} test64" 435 echo "Checking for off64_t... Yes." | tee -a configure.log 436 echo "Checking for fseeko... Yes." | tee -a configure.log 437else 438 echo "Checking for off64_t... No." | tee -a configure.log 439 echo >> configure.log 440 cat > $test.c <<EOF 441#include <stdio.h> 442int main(void) { 443 fseeko(NULL, 0, 0); 444 return 0; 445} 446EOF 447 if try $CC $CFLAGS -o $test $test.c; then 448 echo "Checking for fseeko... Yes." | tee -a configure.log 449 else 450 CFLAGS="${CFLAGS} -DNO_FSEEKO" 451 SFLAGS="${SFLAGS} -DNO_FSEEKO" 452 echo "Checking for fseeko... No." | tee -a configure.log 453 fi 454fi 455 456echo >> configure.log 457 458# check for strerror() for use by gz* functions 459cat > $test.c <<EOF 460#include <string.h> 461#include <errno.h> 462int main() { return strlen(strerror(errno)); } 463EOF 464if try $CC $CFLAGS -o $test $test.c; then 465 echo "Checking for strerror... Yes." | tee -a configure.log 466else 467 CFLAGS="${CFLAGS} -DNO_STRERROR" 468 SFLAGS="${SFLAGS} -DNO_STRERROR" 469 echo "Checking for strerror... No." | tee -a configure.log 470fi 471 472# copy clean zconf.h for subsequent edits 473cp -p zconf.h.in zconf.h 474 475echo >> configure.log 476 477# check for unistd.h and save result in zconf.h 478cat > $test.c <<EOF 479#include <unistd.h> 480int main() { return 0; } 481EOF 482if try $CC -c $CFLAGS $test.c; then 483 sed < zconf.h "/^#ifdef HAVE_UNISTD_H.* may be/s/def HAVE_UNISTD_H\(.*\) may be/ 1\1 was/" > zconf.temp.h 484 mv zconf.temp.h zconf.h 485 echo "Checking for unistd.h... Yes." | tee -a configure.log 486else 487 echo "Checking for unistd.h... No." | tee -a configure.log 488fi 489 490echo >> configure.log 491 492# check for stdarg.h and save result in zconf.h 493cat > $test.c <<EOF 494#include <stdarg.h> 495int main() { return 0; } 496EOF 497if try $CC -c $CFLAGS $test.c; then 498 sed < zconf.h "/^#ifdef HAVE_STDARG_H.* may be/s/def HAVE_STDARG_H\(.*\) may be/ 1\1 was/" > zconf.temp.h 499 mv zconf.temp.h zconf.h 500 echo "Checking for stdarg.h... Yes." | tee -a configure.log 501else 502 echo "Checking for stdarg.h... No." | tee -a configure.log 503fi 504 505# if the z_ prefix was requested, save that in zconf.h 506if test $zprefix -eq 1; then 507 sed < zconf.h "/#ifdef Z_PREFIX.* may be/s/def Z_PREFIX\(.*\) may be/ 1\1 was/" > zconf.temp.h 508 mv zconf.temp.h zconf.h 509 echo >> configure.log 510 echo "Using z_ prefix on all symbols." | tee -a configure.log 511fi 512 513# if --solo compilation was requested, save that in zconf.h and remove gz stuff from object lists 514if test $solo -eq 1; then 515 sed '/#define ZCONF_H/a\ 516#define Z_SOLO 517 518' < zconf.h > zconf.temp.h 519 mv zconf.temp.h zconf.h 520OBJC='$(OBJZ)' 521PIC_OBJC='$(PIC_OBJZ)' 522fi 523 524# if code coverage testing was requested, use older gcc if defined, e.g. "gcc-4.2" on Mac OS X 525if test $cover -eq 1; then 526 CFLAGS="${CFLAGS} -fprofile-arcs -ftest-coverage" 527 if test -n "$GCC_CLASSIC"; then 528 CC=$GCC_CLASSIC 529 fi 530fi 531 532echo >> configure.log 533 534# conduct a series of tests to resolve eight possible cases of using "vs" or "s" printf functions 535# (using stdarg or not), with or without "n" (proving size of buffer), and with or without a 536# return value. The most secure result is vsnprintf() with a return value. snprintf() with a 537# return value is secure as well, but then gzprintf() will be limited to 20 arguments. 538cat > $test.c <<EOF 539#include <stdio.h> 540#include <stdarg.h> 541#include "zconf.h" 542int main() 543{ 544#ifndef STDC 545 choke me 546#endif 547 return 0; 548} 549EOF 550if try $CC -c $CFLAGS $test.c; then 551 echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()." | tee -a configure.log 552 553 echo >> configure.log 554 cat > $test.c <<EOF 555#include <stdio.h> 556#include <stdarg.h> 557int mytest(const char *fmt, ...) 558{ 559 char buf[20]; 560 va_list ap; 561 va_start(ap, fmt); 562 vsnprintf(buf, sizeof(buf), fmt, ap); 563 va_end(ap); 564 return 0; 565} 566int main() 567{ 568 return (mytest("Hello%d\n", 1)); 569} 570EOF 571 if try $CC $CFLAGS -o $test $test.c; then 572 echo "Checking for vsnprintf() in stdio.h... Yes." | tee -a configure.log 573 574 echo >> configure.log 575 cat >$test.c <<EOF 576#include <stdio.h> 577#include <stdarg.h> 578int mytest(const char *fmt, ...) 579{ 580 int n; 581 char buf[20]; 582 va_list ap; 583 va_start(ap, fmt); 584 n = vsnprintf(buf, sizeof(buf), fmt, ap); 585 va_end(ap); 586 return n; 587} 588int main() 589{ 590 return (mytest("Hello%d\n", 1)); 591} 592EOF 593 594 if try $CC -c $CFLAGS $test.c; then 595 echo "Checking for return value of vsnprintf()... Yes." | tee -a configure.log 596 else 597 CFLAGS="$CFLAGS -DHAS_vsnprintf_void" 598 SFLAGS="$SFLAGS -DHAS_vsnprintf_void" 599 echo "Checking for return value of vsnprintf()... No." | tee -a configure.log 600 echo " WARNING: apparently vsnprintf() does not return a value. zlib" | tee -a configure.log 601 echo " can build but will be open to possible string-format security" | tee -a configure.log 602 echo " vulnerabilities." | tee -a configure.log 603 fi 604 else 605 CFLAGS="$CFLAGS -DNO_vsnprintf" 606 SFLAGS="$SFLAGS -DNO_vsnprintf" 607 echo "Checking for vsnprintf() in stdio.h... No." | tee -a configure.log 608 echo " WARNING: vsnprintf() not found, falling back to vsprintf(). zlib" | tee -a configure.log 609 echo " can build but will be open to possible buffer-overflow security" | tee -a configure.log 610 echo " vulnerabilities." | tee -a configure.log 611 612 echo >> configure.log 613 cat >$test.c <<EOF 614#include <stdio.h> 615#include <stdarg.h> 616int mytest(const char *fmt, ...) 617{ 618 int n; 619 char buf[20]; 620 va_list ap; 621 va_start(ap, fmt); 622 n = vsprintf(buf, fmt, ap); 623 va_end(ap); 624 return n; 625} 626int main() 627{ 628 return (mytest("Hello%d\n", 1)); 629} 630EOF 631 632 if try $CC -c $CFLAGS $test.c; then 633 echo "Checking for return value of vsprintf()... Yes." | tee -a configure.log 634 else 635 CFLAGS="$CFLAGS -DHAS_vsprintf_void" 636 SFLAGS="$SFLAGS -DHAS_vsprintf_void" 637 echo "Checking for return value of vsprintf()... No." | tee -a configure.log 638 echo " WARNING: apparently vsprintf() does not return a value. zlib" | tee -a configure.log 639 echo " can build but will be open to possible string-format security" | tee -a configure.log 640 echo " vulnerabilities." | tee -a configure.log 641 fi 642 fi 643else 644 echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()." | tee -a configure.log 645 646 echo >> configure.log 647 cat >$test.c <<EOF 648#include <stdio.h> 649int mytest() 650{ 651 char buf[20]; 652 snprintf(buf, sizeof(buf), "%s", "foo"); 653 return 0; 654} 655int main() 656{ 657 return (mytest()); 658} 659EOF 660 661 if try $CC $CFLAGS -o $test $test.c; then 662 echo "Checking for snprintf() in stdio.h... Yes." | tee -a configure.log 663 664 echo >> configure.log 665 cat >$test.c <<EOF 666#include <stdio.h> 667int mytest() 668{ 669 char buf[20]; 670 return snprintf(buf, sizeof(buf), "%s", "foo"); 671} 672int main() 673{ 674 return (mytest()); 675} 676EOF 677 678 if try $CC -c $CFLAGS $test.c; then 679 echo "Checking for return value of snprintf()... Yes." | tee -a configure.log 680 else 681 CFLAGS="$CFLAGS -DHAS_snprintf_void" 682 SFLAGS="$SFLAGS -DHAS_snprintf_void" 683 echo "Checking for return value of snprintf()... No." | tee -a configure.log 684 echo " WARNING: apparently snprintf() does not return a value. zlib" | tee -a configure.log 685 echo " can build but will be open to possible string-format security" | tee -a configure.log 686 echo " vulnerabilities." | tee -a configure.log 687 fi 688 else 689 CFLAGS="$CFLAGS -DNO_snprintf" 690 SFLAGS="$SFLAGS -DNO_snprintf" 691 echo "Checking for snprintf() in stdio.h... No." | tee -a configure.log 692 echo " WARNING: snprintf() not found, falling back to sprintf(). zlib" | tee -a configure.log 693 echo " can build but will be open to possible buffer-overflow security" | tee -a configure.log 694 echo " vulnerabilities." | tee -a configure.log 695 696 echo >> configure.log 697 cat >$test.c <<EOF 698#include <stdio.h> 699int mytest() 700{ 701 char buf[20]; 702 return sprintf(buf, "%s", "foo"); 703} 704int main() 705{ 706 return (mytest()); 707} 708EOF 709 710 if try $CC -c $CFLAGS $test.c; then 711 echo "Checking for return value of sprintf()... Yes." | tee -a configure.log 712 else 713 CFLAGS="$CFLAGS -DHAS_sprintf_void" 714 SFLAGS="$SFLAGS -DHAS_sprintf_void" 715 echo "Checking for return value of sprintf()... No." | tee -a configure.log 716 echo " WARNING: apparently sprintf() does not return a value. zlib" | tee -a configure.log 717 echo " can build but will be open to possible string-format security" | tee -a configure.log 718 echo " vulnerabilities." | tee -a configure.log 719 fi 720 fi 721fi 722 723# see if we can hide zlib internal symbols that are linked between separate source files 724if test "$gcc" -eq 1; then 725 echo >> configure.log 726 cat > $test.c <<EOF 727#define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) 728int ZLIB_INTERNAL foo; 729int main() 730{ 731 return 0; 732} 733EOF 734 if tryboth $CC -c $CFLAGS $test.c; then 735 CFLAGS="$CFLAGS -DHAVE_HIDDEN" 736 SFLAGS="$SFLAGS -DHAVE_HIDDEN" 737 echo "Checking for attribute(visibility) support... Yes." | tee -a configure.log 738 else 739 echo "Checking for attribute(visibility) support... No." | tee -a configure.log 740 fi 741fi 742 743# show the results in the log 744echo >> configure.log 745echo ALL = $ALL >> configure.log 746echo AR = $AR >> configure.log 747echo ARFLAGS = $ARFLAGS >> configure.log 748echo CC = $CC >> configure.log 749echo CFLAGS = $CFLAGS >> configure.log 750echo CPP = $CPP >> configure.log 751echo EXE = $EXE >> configure.log 752echo LDCONFIG = $LDCONFIG >> configure.log 753echo LDFLAGS = $LDFLAGS >> configure.log 754echo LDSHARED = $LDSHARED >> configure.log 755echo LDSHAREDLIBC = $LDSHAREDLIBC >> configure.log 756echo OBJC = $OBJC >> configure.log 757echo PIC_OBJC = $PIC_OBJC >> configure.log 758echo RANLIB = $RANLIB >> configure.log 759echo SFLAGS = $SFLAGS >> configure.log 760echo SHAREDLIB = $SHAREDLIB >> configure.log 761echo SHAREDLIBM = $SHAREDLIBM >> configure.log 762echo SHAREDLIBV = $SHAREDLIBV >> configure.log 763echo STATICLIB = $STATICLIB >> configure.log 764echo TEST = $TEST >> configure.log 765echo VER = $VER >> configure.log 766echo Z_U4 = $Z_U4 >> configure.log 767echo exec_prefix = $exec_prefix >> configure.log 768echo includedir = $includedir >> configure.log 769echo libdir = $libdir >> configure.log 770echo mandir = $mandir >> configure.log 771echo prefix = $prefix >> configure.log 772echo sharedlibdir = $sharedlibdir >> configure.log 773echo uname = $uname >> configure.log 774 775# udpate Makefile with the configure results 776sed < Makefile.in " 777/^CC *=/s#=.*#=$CC# 778/^CFLAGS *=/s#=.*#=$CFLAGS# 779/^SFLAGS *=/s#=.*#=$SFLAGS# 780/^LDFLAGS *=/s#=.*#=$LDFLAGS# 781/^LDSHARED *=/s#=.*#=$LDSHARED# 782/^CPP *=/s#=.*#=$CPP# 783/^STATICLIB *=/s#=.*#=$STATICLIB# 784/^SHAREDLIB *=/s#=.*#=$SHAREDLIB# 785/^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV# 786/^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM# 787/^AR *=/s#=.*#=$AR# 788/^ARFLAGS *=/s#=.*#=$ARFLAGS# 789/^RANLIB *=/s#=.*#=$RANLIB# 790/^LDCONFIG *=/s#=.*#=$LDCONFIG# 791/^LDSHAREDLIBC *=/s#=.*#=$LDSHAREDLIBC# 792/^EXE *=/s#=.*#=$EXE# 793/^prefix *=/s#=.*#=$prefix# 794/^exec_prefix *=/s#=.*#=$exec_prefix# 795/^libdir *=/s#=.*#=$libdir# 796/^sharedlibdir *=/s#=.*#=$sharedlibdir# 797/^includedir *=/s#=.*#=$includedir# 798/^mandir *=/s#=.*#=$mandir# 799/^OBJC *=/s#=.*#= $OBJC# 800/^PIC_OBJC *=/s#=.*#= $PIC_OBJC# 801/^all: */s#:.*#: $ALL# 802/^test: */s#:.*#: $TEST# 803" > Makefile 804 805# create zlib.pc with the configure results 806sed < zlib.pc.in " 807/^CC *=/s#=.*#=$CC# 808/^CFLAGS *=/s#=.*#=$CFLAGS# 809/^CPP *=/s#=.*#=$CPP# 810/^LDSHARED *=/s#=.*#=$LDSHARED# 811/^STATICLIB *=/s#=.*#=$STATICLIB# 812/^SHAREDLIB *=/s#=.*#=$SHAREDLIB# 813/^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV# 814/^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM# 815/^AR *=/s#=.*#=$AR# 816/^ARFLAGS *=/s#=.*#=$ARFLAGS# 817/^RANLIB *=/s#=.*#=$RANLIB# 818/^EXE *=/s#=.*#=$EXE# 819/^prefix *=/s#=.*#=$prefix# 820/^exec_prefix *=/s#=.*#=$exec_prefix# 821/^libdir *=/s#=.*#=$libdir# 822/^sharedlibdir *=/s#=.*#=$sharedlibdir# 823/^includedir *=/s#=.*#=$includedir# 824/^mandir *=/s#=.*#=$mandir# 825/^LDFLAGS *=/s#=.*#=$LDFLAGS# 826" | sed -e " 827s/\@VERSION\@/$VER/g; 828" > zlib.pc 829 830# done 831leave 0 832