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 17 echo -------------------- >> configure.log 18 echo $0 $* >> configure.log 19 date >> configure.log 20 21 # set command prefix for cross-compilation 22 if [ -n "${CHOST}" ]; then 23 uname="`echo "${CHOST}" | sed -e 's/^[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)-.*$/\1/'`" 24 CROSS_PREFIX="${CHOST}-" 25 fi 26 27 # destination name for static library 28 STATICLIB=libz.a 29 30 # extract zlib version numbers from zlib.h 31 VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h` 32 VER3=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\\.[0-9]*\).*/\1/p' < zlib.h` 33 VER2=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\)\\..*/\1/p' < zlib.h` 34 VER1=`sed -n -e '/VERSION "/s/.*"\([0-9]*\)\\..*/\1/p' < zlib.h` 35 36 # establish commands for library building 37 if "${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 ${AR} | tee -a configure.log 40 else 41 AR=${AR-"ar"} 42 test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log 43 fi 44 ARFLAGS=${ARFLAGS-"rc"} 45 if "${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 ${RANLIB} | tee -a configure.log 48 else 49 RANLIB=${RANLIB-"ranlib"} 50 fi 51 if "${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 ${NM} | tee -a configure.log 54 else 55 NM=${NM-"nm"} 56 fi 57 58 # set defaults before processing command line options 59 LDCONFIG=${LDCONFIG-"ldconfig"} 60 LDSHAREDLIBC="${LDSHAREDLIBC--lc}" 61 ARCHS= 62 prefix=${prefix-/usr/local} 63 exec_prefix=${exec_prefix-'${prefix}'} 64 libdir=${libdir-'${exec_prefix}/lib'} 65 sharedlibdir=${sharedlibdir-'${libdir}'} 66 includedir=${includedir-'${prefix}/include'} 67 mandir=${mandir-'${prefix}/share/man'} 68 shared_ext='.so' 69 shared=1 70 solo=0 71 cover=0 72 zprefix=0 73 zconst=0 74 build64=0 75 gcc=0 76 old_cc="$CC" 77 old_cflags="$CFLAGS" 78 OBJC='$(OBJZ) $(OBJG)' 79 PIC_OBJC='$(PIC_OBJZ) $(PIC_OBJG)' 80 81 # leave this script, optionally in a bad way 82 leave() 83 { 84 if test "$*" != "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 95 while test $# -ge 1 96 do 97 case "$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 129 done 130 131 # temporary file name 132 test=ztest$$ 133 134 # put arguments in log, also put test file in log if used in arguments 135 show() 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 147 cat > $test.c <<EOF 148 extern int getchar(); 149 int hello() {return getchar();} 150 EOF 151 152 test -z "$CC" && echo Checking for ${CROSS_PREFIX}gcc... | tee -a configure.log 153 cc=${CC-${CROSS_PREFIX}gcc} 154 cflags=${CFLAGS-"-O3"} 155 # to force the asm version use: CFLAGS="-O3 -DASMV" ./configure 156 case "$cc" in 157 *gcc*) gcc=1 ;; 158 *clang*) gcc=1 ;; 159 esac 160 case `$cc -v 2>&1` in 161 *gcc*) gcc=1 ;; 162 esac 163 164 show $cc -c $test.c 165 if test "$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 (at] 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-"$cc -shared"} ;; 227 esac 228 else 229 # find system name and corresponding cc options 230 CC=${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 (at] arrayasolutions.com 310 SFLAGS=${CFLAGS-"-O -qmaxmem=8192"} 311 CFLAGS=${CFLAGS-"-O -qmaxmem=8192"} 312 LDSHARED=${LDSHARED-"xlc -G"} ;; 313 # send working options for other systems to zlib (at] gzip.org 314 *) SFLAGS=${CFLAGS-"-O"} 315 CFLAGS=${CFLAGS-"-O"} 316 LDSHARED=${LDSHARED-"cc -shared"} ;; 317 esac 318 fi 319 320 # destination names for shared library if not defined above 321 SHAREDLIB=${SHAREDLIB-"libz$shared_ext"} 322 SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"} 323 SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"} 324 325 echo >> configure.log 326 327 # define functions for testing compiler and library characteristics and logging the results 328 329 cat > $test.c <<EOF 330 #error error 331 EOF 332 if ($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 339 else 340 try() 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 } 350 fi 351 352 tryboth() 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 } 363 364 cat > $test.c << EOF 365 int foo() { return 0; } 366 EOF 367 echo "Checking for obsessive-compulsive compiler options..." >> configure.log 368 if try $CC -c $CFLAGS $test.c; then 369 : 370 else 371 echo "Compiler error reporting is too harsh for $0 (perhaps remove -Werror)." | tee -a configure.log 372 leave 1 373 fi 374 375 echo >> configure.log 376 377 # see if shared library build supported 378 cat > $test.c <<EOF 379 extern int getchar(); 380 int hello() {return getchar();} 381 EOF 382 if 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 395 fi 396 if 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 $CC. | tee -a configure.log 404 else 405 ALL="static shared" 406 TEST="all teststatic testshared" 407 fi 408 409 # check for underscores in external names for use by assembler code 410 CPP=${CPP-"$CC -E"} 411 case $CFLAGS in 412 *ASMV*) 413 echo >> configure.log 414 show "$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 ;; 421 esac 422 423 echo >> configure.log 424 425 # check for large file support, and if none, check for fseeko() 426 cat > $test.c <<EOF 427 #include <sys/types.h> 428 off64_t dummy = 0; 429 EOF 430 if 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 437 else 438 echo "Checking for off64_t... No." | tee -a configure.log 439 echo >> configure.log 440 cat > $test.c <<EOF 441 #include <stdio.h> 442 int main(void) { 443 fseeko(NULL, 0, 0); 444 return 0; 445 } 446 EOF 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 454 fi 455 456 echo >> configure.log 457 458 # check for strerror() for use by gz* functions 459 cat > $test.c <<EOF 460 #include <string.h> 461 #include <errno.h> 462 int main() { return strlen(strerror(errno)); } 463 EOF 464 if try $CC $CFLAGS -o $test $test.c; then 465 echo "Checking for strerror... Yes." | tee -a configure.log 466 else 467 CFLAGS="${CFLAGS} -DNO_STRERROR" 468 SFLAGS="${SFLAGS} -DNO_STRERROR" 469 echo "Checking for strerror... No." | tee -a configure.log 470 fi 471 472 # copy clean zconf.h for subsequent edits 473 cp -p zconf.h.in zconf.h 474 475 echo >> configure.log 476 477 # check for unistd.h and save result in zconf.h 478 cat > $test.c <<EOF 479 #include <unistd.h> 480 int main() { return 0; } 481 EOF 482 if 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 486 else 487 echo "Checking for unistd.h... No." | tee -a configure.log 488 fi 489 490 echo >> configure.log 491 492 # check for stdarg.h and save result in zconf.h 493 cat > $test.c <<EOF 494 #include <stdarg.h> 495 int main() { return 0; } 496 EOF 497 if 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 501 else 502 echo "Checking for stdarg.h... No." | tee -a configure.log 503 fi 504 505 # if the z_ prefix was requested, save that in zconf.h 506 if 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 511 fi 512 513 # if --solo compilation was requested, save that in zconf.h and remove gz stuff from object lists 514 if test $solo -eq 1; then 515 sed '/#define ZCONF_H/a\ 516 #define Z_SOLO 517 518 ' < zconf.h > zconf.temp.h 519 mv zconf.temp.h zconf.h 520 OBJC='$(OBJZ)' 521 PIC_OBJC='$(PIC_OBJZ)' 522 fi 523 524 # if code coverage testing was requested, use older gcc if defined, e.g. "gcc-4.2" on Mac OS X 525 if 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 530 fi 531 532 echo >> 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. 538 cat > $test.c <<EOF 539 #include <stdio.h> 540 #include <stdarg.h> 541 #include "zconf.h" 542 int main() 543 { 544 #ifndef STDC 545 choke me 546 #endif 547 return 0; 548 } 549 EOF 550 if 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> 557 int 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 } 566 int main() 567 { 568 return (mytest("Hello%d\n", 1)); 569 } 570 EOF 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> 578 int 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 } 588 int main() 589 { 590 return (mytest("Hello%d\n", 1)); 591 } 592 EOF 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> 616 int 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 } 626 int main() 627 { 628 return (mytest("Hello%d\n", 1)); 629 } 630 EOF 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="$SFLAGS -DHAS_vsprintf_void" 637 echo "Checking for return value of vsprintf()... No." | tee -a configure.log 638 echo " WARNING: apparently vsprintf() does not return a value. zlib" | tee -a configure.log 639 echo " can build but will be open to possible string-format security" | tee -a configure.log 640 echo " vulnerabilities." | tee -a configure.log 641 fi 642 fi 643 else 644 echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()." | tee -a configure.log 645 646 echo >> configure.log 647 cat >$test.c <<EOF 648 #include <stdio.h> 649 int mytest() 650 { 651 char buf[20]; 652 snprintf(buf, sizeof(buf), "%s", "foo"); 653 return 0; 654 } 655 int main() 656 { 657 return (mytest()); 658 } 659 EOF 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> 667 int mytest() 668 { 669 char buf[20]; 670 return snprintf(buf, sizeof(buf), "%s", "foo"); 671 } 672 int main() 673 { 674 return (mytest()); 675 } 676 EOF 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> 699 int mytest() 700 { 701 char buf[20]; 702 return sprintf(buf, "%s", "foo"); 703 } 704 int main() 705 { 706 return (mytest()); 707 } 708 EOF 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="$SFLAGS -DHAS_sprintf_void" 715 echo "Checking for return value of sprintf()... No." | tee -a configure.log 716 echo " WARNING: apparently sprintf() does not return a value. zlib" | tee -a configure.log 717 echo " can build but will be open to possible string-format security" | tee -a configure.log 718 echo " vulnerabilities." | tee -a configure.log 719 fi 720 fi 721 fi 722 723 # see if we can hide zlib internal symbols that are linked between separate source files 724 if test "$gcc" -eq 1; then 725 echo >> configure.log 726 cat > $test.c <<EOF 727 #define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) 728 int ZLIB_INTERNAL foo; 729 int main() 730 { 731 return 0; 732 } 733 EOF 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 741 fi 742 743 # show the results in the log 744 echo >> configure.log 745 echo ALL = $ALL >> configure.log 746 echo AR = $AR >> configure.log 747 echo ARFLAGS = $ARFLAGS >> configure.log 748 echo CC = $CC >> configure.log 749 echo CFLAGS = $CFLAGS >> configure.log 750 echo CPP = $CPP >> configure.log 751 echo EXE = $EXE >> configure.log 752 echo LDCONFIG = $LDCONFIG >> configure.log 753 echo LDFLAGS = $LDFLAGS >> configure.log 754 echo LDSHARED = $LDSHARED >> configure.log 755 echo LDSHAREDLIBC = $LDSHAREDLIBC >> configure.log 756 echo OBJC = $OBJC >> configure.log 757 echo PIC_OBJC = $PIC_OBJC >> configure.log 758 echo RANLIB = $RANLIB >> configure.log 759 echo SFLAGS = $SFLAGS >> configure.log 760 echo SHAREDLIB = $SHAREDLIB >> configure.log 761 echo SHAREDLIBM = $SHAREDLIBM >> configure.log 762 echo SHAREDLIBV = $SHAREDLIBV >> configure.log 763 echo STATICLIB = $STATICLIB >> configure.log 764 echo TEST = $TEST >> configure.log 765 echo VER = $VER >> configure.log 766 echo Z_U4 = $Z_U4 >> configure.log 767 echo exec_prefix = $exec_prefix >> configure.log 768 echo includedir = $includedir >> configure.log 769 echo libdir = $libdir >> configure.log 770 echo mandir = $mandir >> configure.log 771 echo prefix = $prefix >> configure.log 772 echo sharedlibdir = $sharedlibdir >> configure.log 773 echo uname = $uname >> configure.log 774 775 # udpate Makefile with the configure results 776 sed < Makefile.in " 777 /^CC *=/s#=.*#=$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#:.*#: $TEST# 803 " > Makefile 804 805 # create zlib.pc with the configure results 806 sed < zlib.pc.in " 807 /^CC *=/s#=.*#=$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 " 827 s/\@VERSION\@/$VER/g; 828 " > zlib.pc 829 830 # done 831 leave 0 832
