# If you have problems, try without defining CC and CFLAGS before reporting
# an error.
+# start off configure.log
echo -------------------- >> configure.log
echo $0 $* >> configure.log
date >> configure.log
+# get source directory
+SRCDIR=`dirname $0`
+if test $SRCDIR = "."; then
+ ZINC=""
+ ZINCOUT="-I."
+ SRCDIR=""
+else
+ ZINC='-include zconf.h'
+ ZINCOUT='-I. -I$(SRCDIR)'
+ SRCDIR="$SRCDIR/"
+fi
+
+# set command prefix for cross-compilation
if [ -n "${CHOST}" ]; then
uname="`echo "${CHOST}" | sed -e 's/^[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)-.*$/\1/'`"
CROSS_PREFIX="${CHOST}-"
fi
+# destination name for static library
STATICLIB=libz.a
-VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`
-VER3=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\\.[0-9]*\).*/\1/p' < zlib.h`
-VER2=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\)\\..*/\1/p' < zlib.h`
-VER1=`sed -n -e '/VERSION "/s/.*"\([0-9]*\)\\..*/\1/p' < zlib.h`
+
+# extract zlib version numbers from zlib.h
+VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < ${SRCDIR}zlib.h`
+VER3=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\\.[0-9]*\).*/\1/p' < ${SRCDIR}zlib.h`
+VER2=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\)\\..*/\1/p' < ${SRCDIR}zlib.h`
+VER1=`sed -n -e '/VERSION "/s/.*"\([0-9]*\)\\..*/\1/p' < ${SRCDIR}zlib.h`
+
+# establish commands for library building
if "${CROSS_PREFIX}ar" --version >/dev/null 2>/dev/null || test $? -lt 126; then
AR=${AR-"${CROSS_PREFIX}ar"}
test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log
else
NM=${NM-"nm"}
fi
+
+# set defaults before processing command line options
LDCONFIG=${LDCONFIG-"ldconfig"}
LDSHAREDLIBC="${LDSHAREDLIBC--lc}"
ARCHS=
solo=0
cover=0
zprefix=0
+zconst=0
build64=0
gcc=0
+warn=0
+debug=0
+sanitize=0
old_cc="$CC"
old_cflags="$CFLAGS"
OBJC='$(OBJZ) $(OBJG)'
PIC_OBJC='$(PIC_OBJZ) $(PIC_OBJG)'
+# leave this script, optionally in a bad way
+leave()
+{
+ if test "$*" != "0"; then
+ echo "** $0 aborting." | tee -a configure.log
+ fi
+ rm -f $test.[co] $test $test$shared_ext $test.gcno ./--version
+ echo -------------------- >> configure.log
+ echo >> configure.log
+ echo >> configure.log
+ exit $1
+}
+
+# process command line options
while test $# -ge 1
do
case "$1" in
-h* | --help)
echo 'usage:' | tee -a configure.log
- echo ' configure [--zprefix] [--prefix=PREFIX] [--eprefix=EXPREFIX]' | tee -a configure.log
+ echo ' configure [--const] [--zprefix] [--prefix=PREFIX] [--eprefix=EXPREFIX]' | tee -a configure.log
echo ' [--static] [--64] [--libdir=LIBDIR] [--sharedlibdir=LIBDIR]' | tee -a configure.log
echo ' [--includedir=INCLUDEDIR] [--archs="-arch i386 -arch x86_64"]' | tee -a configure.log
exit 0 ;;
-a*=* | --archs=*) ARCHS=`echo $1 | sed 's/.*=//'`; shift ;;
--sysconfdir=*) echo "ignored option: --sysconfdir" | tee -a configure.log; shift ;;
--localstatedir=*) echo "ignored option: --localstatedir" | tee -a configure.log; shift ;;
- *) echo "unknown option: $1"; echo "$0 --help for help" | tee -a configure.log; exit 1 ;;
+ -c* | --const) zconst=1; shift ;;
+ -w* | --warn) warn=1; shift ;;
+ -d* | --debug) debug=1; shift ;;
+ --sanitize) sanitize=1; shift ;;
+ *)
+ echo "unknown option: $1" | tee -a configure.log
+ echo "$0 --help for help" | tee -a configure.log
+ leave 1;;
esac
done
+# temporary file name
test=ztest$$
+# put arguments in log, also put test file in log if used in arguments
show()
{
case "$*" in
echo $* >> configure.log
}
-cat > $test.c <<EOF
-#error error
-EOF
-if ($CC -c $CFLAGS $test.c) 2>/dev/null; then
- try()
- {
- show $*
- test "`( $* ) 2>&1 | tee -a configure.log`" = ""
- }
- echo - using any output from compiler to indicate an error >> configure.log
-else
- try()
- {
- show $*
- ( $* ) >> configure.log 2>&1
- ret=$?
- if test $ret -ne 0; then
- echo "(exit code "$ret")" >> configure.log
- fi
- return $ret
- }
-fi
-
-tryboth()
-{
- show $*
- got=`( $* ) 2>&1`
- ret=$?
- printf %s "$got" >> configure.log
- if test $ret -ne 0; then
- return $ret
- fi
- test "$got" = ""
-}
-
-echo >> configure.log
-
+# check for gcc vs. cc and set compile and link flags based on the system identified by uname
cat > $test.c <<EOF
extern int getchar();
int hello() {return getchar();}
EOF
-test -z "$CC" && echo Checking for ${CROSS_PREFIX}gcc... | tee -a configure.log
-cc=${CC-${CROSS_PREFIX}gcc}
+if test -z "$CC"; then
+ echo Checking for ${CROSS_PREFIX}gcc... | tee -a configure.log
+ if ${CROSS_PREFIX}gcc -v >/dev/null 2>&1; then
+ cc=${CROSS_PREFIX}gcc
+ else
+ cc=${CROSS_PREFIX}cc
+ fi
+fi
cflags=${CFLAGS-"-O3"}
# to force the asm version use: CFLAGS="-O3 -DASMV" ./configure
case "$cc" in
*gcc*) gcc=1 ;;
+ *clang*) gcc=1 ;;
esac
case `$cc -v 2>&1` in
*gcc*) gcc=1 ;;
+ *clang*) gcc=1 ;;
esac
-show $cc -c $cflags $test.c
-if test "$gcc" -eq 1 && ($cc -c $cflags $test.c) >> configure.log 2>&1; then
+show $cc -c $test.c
+if test "$gcc" -eq 1 && ($cc -c $test.c) >> configure.log 2>&1; then
echo ... using gcc >> configure.log
CC="$cc"
- CFLAGS="${CFLAGS--O3} ${ARCHS}"
+ CFLAGS="${CFLAGS--O3}"
SFLAGS="${CFLAGS--O3} -fPIC"
- LDFLAGS="${LDFLAGS} ${ARCHS}"
+ if test "$ARCHS"; then
+ CFLAGS="${CFLAGS} ${ARCHS}"
+ LDFLAGS="${LDFLAGS} ${ARCHS}"
+ fi
if test $build64 -eq 1; then
CFLAGS="${CFLAGS} -m64"
SFLAGS="${SFLAGS} -m64"
fi
- if test "${ZLIBGCCWARN}" = "YES"; then
- CFLAGS="${CFLAGS} -Wall -Wextra -pedantic"
+ if test "$warn" -eq 1; then
+ if test "$zconst" -eq 1; then
+ CFLAGS="${CFLAGS} -Wall -Wextra -Wcast-qual -pedantic -DZLIB_CONST"
+ else
+ CFLAGS="${CFLAGS} -Wall -Wextra -pedantic"
+ fi
+ fi
+ if test $sanitize -eq 1; then
+ CFLAGS="${CFLAGS} -fsanitize=address"
+ fi
+ if test $debug -eq 1; then
+ CFLAGS="${CFLAGS} -DZLIB_DEBUG"
+ SFLAGS="${SFLAGS} -DZLIB_DEBUG"
fi
if test -z "$uname"; then
uname=`(uname -s || echo unknown) 2>/dev/null`
fi
case "$uname" in
Linux* | linux* | GNU | GNU/* | solaris*)
- LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,zlib.map"} ;;
+ LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,${SRCDIR}zlib.map"} ;;
*BSD | *bsd* | DragonFly)
- LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,zlib.map"}
+ LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,${SRCDIR}zlib.map"}
LDCONFIG="ldconfig -m" ;;
CYGWIN* | Cygwin* | cygwin* | OS/2*)
EXE='.exe' ;;
# temporary bypass
rm -f $test.[co] $test $test$shared_ext
echo "Please use win32/Makefile.gcc instead." | tee -a configure.log
- exit 1
+ leave 1
LDSHARED=${LDSHARED-"$cc -shared"}
LDSHAREDLIBC=""
EXE='.exe' ;;
SHAREDLIBV=libz.$VER$shared_ext
SHAREDLIBM=libz.$VER1$shared_ext
LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER3"}
- AR="libtool"
+ if libtool -V 2>&1 | grep Apple > /dev/null; then
+ AR="libtool"
+ else
+ AR="/usr/bin/libtool"
+ fi
ARFLAGS="-o" ;;
*) LDSHARED=${LDSHARED-"$cc -shared"} ;;
esac
CFLAGS=${CFLAGS-"-O3"}
LDSHARED=${LDSHARED-"cc -dy -KPIC -G"} ;;
SunOS\ 5* | solaris*)
- LDSHARED=${LDSHARED-"cc -G"}
- case `(uname -m || echo unknown) 2>/dev/null` in
- i86*)
- SFLAGS=${CFLAGS-"-xpentium -fast -KPIC -R."}
- CFLAGS=${CFLAGS-"-xpentium -fast"} ;;
- *)
- SFLAGS=${CFLAGS-"-fast -xcg92 -KPIC -R."}
- CFLAGS=${CFLAGS-"-fast -xcg92"} ;;
- esac ;;
+ LDSHARED=${LDSHARED-"cc -G -h libz$shared_ext.$VER1"}
+ SFLAGS=${CFLAGS-"-fast -KPIC"}
+ CFLAGS=${CFLAGS-"-fast"}
+ if test $build64 -eq 1; then
+ # old versions of SunPRO/Workshop/Studio don't support -m64,
+ # but newer ones do. Check for it.
+ flag64=`$CC -flags | egrep -- '^-m64'`
+ if test x"$flag64" != x"" ; then
+ CFLAGS="${CFLAGS} -m64"
+ SFLAGS="${SFLAGS} -m64"
+ else
+ case `(uname -m || echo unknown) 2>/dev/null` in
+ i86*)
+ SFLAGS="$SFLAGS -xarch=amd64"
+ CFLAGS="$CFLAGS -xarch=amd64" ;;
+ *)
+ SFLAGS="$SFLAGS -xarch=v9"
+ CFLAGS="$CFLAGS -xarch=v9" ;;
+ esac
+ fi
+ fi
+ if test -n "$ZINC"; then
+ ZINC='-I- -I. -I$(SRCDIR)'
+ fi
+ ;;
SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"}
CFLAGS=${CFLAGS-"-O2"}
LDSHARED=${LDSHARED-"ld"} ;;
esac
fi
+# destination names for shared library if not defined above
SHAREDLIB=${SHAREDLIB-"libz$shared_ext"}
SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"}
SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"}
echo >> configure.log
+# define functions for testing compiler and library characteristics and logging the results
+
+cat > $test.c <<EOF
+#error error
+EOF
+if ($CC -c $CFLAGS $test.c) 2>/dev/null; then
+ try()
+ {
+ show $*
+ test "`( $* ) 2>&1 | tee -a configure.log`" = ""
+ }
+ echo - using any output from compiler to indicate an error >> configure.log
+else
+ try()
+ {
+ show $*
+ got=`( $* ) 2>&1`
+ ret=$?
+ if test "$got" != ""; then
+ printf "%s\n" "$got" >> configure.log
+ fi
+ if test $ret -ne 0; then
+ echo "(exit code "$ret")" >> configure.log
+ fi
+ return $ret
+ }
+fi
+
+tryboth()
+{
+ show $*
+ got=`( $* ) 2>&1`
+ ret=$?
+ if test "$got" != ""; then
+ printf "%s\n" "$got" >> configure.log
+ fi
+ if test $ret -ne 0; then
+ echo "(exit code "$ret")" >> configure.log
+ return $ret
+ fi
+ test "$got" = ""
+}
+
+cat > $test.c << EOF
+int foo() { return 0; }
+EOF
+echo "Checking for obsessive-compulsive compiler options..." >> configure.log
+if try $CC -c $CFLAGS $test.c; then
+ :
+else
+ echo "Compiler error reporting is too harsh for $0 (perhaps remove -Werror)." | tee -a configure.log
+ leave 1
+fi
+
+echo >> configure.log
+
+# see if shared library build supported
+cat > $test.c <<EOF
+extern int getchar();
+int hello() {return getchar();}
+EOF
if test $shared -eq 1; then
echo Checking for shared library support... | tee -a configure.log
# we must test in two steps (cc then ld), required at least on SunOS 4.x
TEST="all teststatic testshared"
fi
+# check for underscores in external names for use by assembler code
CPP=${CPP-"$CC -E"}
case $CFLAGS in
*ASMV*)
echo >> configure.log
+# check for size_t
+cat > $test.c <<EOF
+#include <stdio.h>
+#include <stdlib.h>
+size_t dummy = 0;
+EOF
+if try $CC -c $CFLAGS $test.c; then
+ echo "Checking for size_t... Yes." | tee -a configure.log
+else
+ echo "Checking for size_t... No." | tee -a configure.log
+ # find a size_t integer type
+ # check for long long
+ cat > $test.c << EOF
+long long dummy = 0;
+EOF
+ if try $CC -c $CFLAGS $test.c; then
+ echo "Checking for long long... Yes." | tee -a configure.log
+ cat > $test.c <<EOF
+#include <stdio.h>
+int main(void) {
+ if (sizeof(void *) <= sizeof(int)) puts("int");
+ else if (sizeof(void *) <= sizeof(long)) puts("long");
+ else puts("z_longlong");
+ return 0;
+}
+EOF
+ else
+ echo "Checking for long long... No." | tee -a configure.log
+ cat > $test.c <<EOF
+#include <stdio.h>
+int main(void) {
+ if (sizeof(void *) <= sizeof(int)) puts("int");
+ else puts("long");
+ return 0;
+}
+EOF
+ fi
+ if try $CC $CFLAGS -o $test $test.c; then
+ sizet=`./$test`
+ echo "Checking for a pointer-size integer type..." $sizet"." | tee -a configure.log
+ CFLAGS="${CFLAGS} -DNO_SIZE_T=${sizet}"
+ SFLAGS="${SFLAGS} -DNO_SIZE_T=${sizet}"
+ else
+ echo "Checking for a pointer-size integer type... not found." | tee -a configure.log
+ fi
+fi
+
+echo >> configure.log
+
+# check for large file support, and if none, check for fseeko()
cat > $test.c <<EOF
#include <sys/types.h>
off64_t dummy = 0;
echo >> configure.log
+# check for strerror() for use by gz* functions
cat > $test.c <<EOF
#include <string.h>
#include <errno.h>
echo "Checking for strerror... No." | tee -a configure.log
fi
-cp -p zconf.h.in zconf.h
+# copy clean zconf.h for subsequent edits
+cp -p ${SRCDIR}zconf.h.in zconf.h
echo >> configure.log
+# check for unistd.h and save result in zconf.h
cat > $test.c <<EOF
#include <unistd.h>
int main() { return 0; }
echo >> configure.log
+# check for stdarg.h and save result in zconf.h
cat > $test.c <<EOF
#include <stdarg.h>
int main() { return 0; }
echo "Checking for stdarg.h... No." | tee -a configure.log
fi
+# if the z_ prefix was requested, save that in zconf.h
if test $zprefix -eq 1; then
sed < zconf.h "/#ifdef Z_PREFIX.* may be/s/def Z_PREFIX\(.*\) may be/ 1\1 was/" > zconf.temp.h
mv zconf.temp.h zconf.h
echo "Using z_ prefix on all symbols." | tee -a configure.log
fi
+# if --solo compilation was requested, save that in zconf.h and remove gz stuff from object lists
if test $solo -eq 1; then
sed '/#define ZCONF_H/a\
#define Z_SOLO
PIC_OBJC='$(PIC_OBJZ)'
fi
+# if code coverage testing was requested, use older gcc if defined, e.g. "gcc-4.2" on Mac OS X
if test $cover -eq 1; then
CFLAGS="${CFLAGS} -fprofile-arcs -ftest-coverage"
if test -n "$GCC_CLASSIC"; then
echo >> configure.log
+# conduct a series of tests to resolve eight possible cases of using "vs" or "s" printf functions
+# (using stdarg or not), with or without "n" (proving size of buffer), and with or without a
+# return value. The most secure result is vsnprintf() with a return value. snprintf() with a
+# return value is secure as well, but then gzprintf() will be limited to 20 arguments.
cat > $test.c <<EOF
#include <stdio.h>
#include <stdarg.h>
fi
fi
+# see if we can hide zlib internal symbols that are linked between separate source files
if test "$gcc" -eq 1; then
echo >> configure.log
cat > $test.c <<EOF
fi
fi
-rm -f $test.[co] $test $test$shared_ext $test.gcno
-
# show the results in the log
echo >> configure.log
echo ALL = $ALL >> configure.log
echo STATICLIB = $STATICLIB >> configure.log
echo TEST = $TEST >> configure.log
echo VER = $VER >> configure.log
+echo SRCDIR = $SRCDIR >> configure.log
echo exec_prefix = $exec_prefix >> configure.log
echo includedir = $includedir >> configure.log
echo libdir = $libdir >> configure.log
echo prefix = $prefix >> configure.log
echo sharedlibdir = $sharedlibdir >> configure.log
echo uname = $uname >> configure.log
-echo -------------------- >> configure.log
-echo >> configure.log
-echo >> configure.log
-# udpate Makefile
-sed < Makefile.in "
+# udpate Makefile with the configure results
+sed < ${SRCDIR}Makefile.in "
/^CC *=/s#=.*#=$CC#
/^CFLAGS *=/s#=.*#=$CFLAGS#
/^SFLAGS *=/s#=.*#=$SFLAGS#
/^LDCONFIG *=/s#=.*#=$LDCONFIG#
/^LDSHAREDLIBC *=/s#=.*#=$LDSHAREDLIBC#
/^EXE *=/s#=.*#=$EXE#
+/^SRCDIR *=/s#=.*#=$SRCDIR#
+/^ZINC *=/s#=.*#=$ZINC#
+/^ZINCOUT *=/s#=.*#=$ZINCOUT#
/^prefix *=/s#=.*#=$prefix#
/^exec_prefix *=/s#=.*#=$exec_prefix#
/^libdir *=/s#=.*#=$libdir#
/^test: */s#:.*#: $TEST#
" > Makefile
-sed < zlib.pc.in "
+# create zlib.pc with the configure results
+sed < ${SRCDIR}zlib.pc.in "
/^CC *=/s#=.*#=$CC#
/^CFLAGS *=/s#=.*#=$CFLAGS#
/^CPP *=/s#=.*#=$CPP#
" | sed -e "
s/\@VERSION\@/$VER/g;
" > zlib.pc
+
+# done
+leave 0
projects / zlib.git / blobdiff