444 lines
12 KiB
Bash
444 lines
12 KiB
Bash
#!/bin/sh
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# configure script for zlib. This script is needed only if
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# you wish to build a shared library and your system supports them,
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# of if you need special compiler, flags or install directory.
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# Otherwise, you can just use directly "make test; make install"
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#
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# To create a shared library, use "configure --shared"; by default a static
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# library is created. If the primitive shared library support provided here
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# does not work, use ftp://prep.ai.mit.edu/pub/gnu/libtool-*.tar.gz
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#
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# To impose specific compiler or flags or install directory, use for example:
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# prefix=$HOME CC=cc CFLAGS="-O4" ./configure
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# or for csh/tcsh users:
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# (setenv prefix $HOME; setenv CC cc; setenv CFLAGS "-O4"; ./configure)
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# LDSHARED is the command to be used to create a shared library
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# Incorrect settings of CC or CFLAGS may prevent creating a shared library.
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# If you have problems, try without defining CC and CFLAGS before reporting
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# an error.
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LIBS=libz.a
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LDFLAGS="-L. ${LIBS}"
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VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`
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VER2=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\)\\..*/\1/p' < zlib.h`
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VER1=`sed -n -e '/VERSION "/s/.*"\([0-9]*\)\\..*/\1/p' < zlib.h`
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AR=${AR-"ar rc"}
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RANLIB=${RANLIB-"ranlib"}
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prefix=${prefix-/usr/local}
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exec_prefix=${exec_prefix-'${prefix}'}
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libdir=${libdir-'${exec_prefix}/lib'}
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includedir=${includedir-'${prefix}/include'}
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mandir=${mandir-'${prefix}/share/man'}
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shared_ext='.so'
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shared=0
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gcc=0
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old_cc="$CC"
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old_cflags="$CFLAGS"
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while test $# -ge 1
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do
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case "$1" in
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-h* | --h*)
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echo 'usage:'
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echo ' configure [--shared] [--prefix=PREFIX] [--exec_prefix=EXPREFIX]'
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echo ' [--libdir=LIBDIR] [--includedir=INCLUDEDIR]'
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exit 0;;
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-p*=* | --p*=*) prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;;
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-e*=* | --e*=*) exec_prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;;
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-l*=* | --libdir=*) libdir=`echo $1 | sed 's/[-a-z_]*=//'`; shift;;
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-i*=* | --includedir=*) includedir=`echo $1 | sed 's/[-a-z_]*=//'`;shift;;
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-p* | --p*) prefix="$2"; shift; shift;;
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-e* | --e*) exec_prefix="$2"; shift; shift;;
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-l* | --l*) libdir="$2"; shift; shift;;
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-i* | --i*) includedir="$2"; shift; shift;;
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-s* | --s*) shared=1; shift;;
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*) echo "unknown option: $1"; echo "$0 --help for help"; exit 1;;
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esac
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done
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test=ztest$$
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cat > $test.c <<EOF
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extern int getchar();
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int hello() {return getchar();}
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EOF
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test -z "$CC" && echo Checking for gcc...
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cc=${CC-gcc}
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cflags=${CFLAGS-"-O3"}
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# to force the asm version use: CFLAGS="-O3 -DASMV" ./configure
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case "$cc" in
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*gcc*) gcc=1;;
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esac
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if test "$gcc" -eq 1 && ($cc -c $cflags $test.c) 2>/dev/null; then
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CC="$cc"
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SFLAGS=${CFLAGS-"-fPIC -O3"}
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CFLAGS="$cflags"
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case `(uname -s || echo unknown) 2>/dev/null` in
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Linux | linux | GNU | GNU/*) LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1"};;
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CYGWIN* | Cygwin* | cygwin* | OS/2* )
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EXE='.exe';;
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QNX*) # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4
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# (alain.bonnefoy@icbt.com)
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LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"};;
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HP-UX*) LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"}
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shared_ext='.sl'
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SHAREDLIB='libz.sl';;
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Darwin*) shared_ext='.dylib'
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SHAREDLIB=libz$shared_ext
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SHAREDLIBV=libz.$VER$shared_ext
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SHAREDLIBM=libz.$VER1$shared_ext
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LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBV -compatibility_version $VER2 -current_version $VER"};;
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*) LDSHARED=${LDSHARED-"$cc -shared"};;
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esac
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else
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# find system name and corresponding cc options
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CC=${CC-cc}
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case `(uname -sr || echo unknown) 2>/dev/null` in
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HP-UX*) SFLAGS=${CFLAGS-"-O +z"}
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CFLAGS=${CFLAGS-"-O"}
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# LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"}
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LDSHARED=${LDSHARED-"ld -b"}
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shared_ext='.sl'
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SHAREDLIB='libz.sl';;
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IRIX*) SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."}
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CFLAGS=${CFLAGS-"-ansi -O2"}
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LDSHARED=${LDSHARED-"cc -shared"};;
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OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"}
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CFLAGS=${CFLAGS-"-O -std1"}
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LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"};;
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OSF1*) SFLAGS=${CFLAGS-"-O -std1"}
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CFLAGS=${CFLAGS-"-O -std1"}
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LDSHARED=${LDSHARED-"cc -shared"};;
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QNX*) SFLAGS=${CFLAGS-"-4 -O"}
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CFLAGS=${CFLAGS-"-4 -O"}
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LDSHARED=${LDSHARED-"cc"}
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RANLIB=${RANLIB-"true"}
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AR="cc -A";;
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SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "}
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CFLAGS=${CFLAGS-"-O3"}
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LDSHARED=${LDSHARED-"cc -dy -KPIC -G"};;
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SunOS\ 5*) SFLAGS=${CFLAGS-"-fast -xcg89 -KPIC -R."}
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CFLAGS=${CFLAGS-"-fast -xcg89"}
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LDSHARED=${LDSHARED-"cc -G"};;
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SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"}
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CFLAGS=${CFLAGS-"-O2"}
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LDSHARED=${LDSHARED-"ld"};;
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UNIX_System_V\ 4.2.0)
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SFLAGS=${CFLAGS-"-KPIC -O"}
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CFLAGS=${CFLAGS-"-O"}
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LDSHARED=${LDSHARED-"cc -G"};;
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UNIX_SV\ 4.2MP)
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SFLAGS=${CFLAGS-"-Kconform_pic -O"}
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CFLAGS=${CFLAGS-"-O"}
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LDSHARED=${LDSHARED-"cc -G"};;
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OpenUNIX\ 5)
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SFLAGS=${CFLAGS-"-KPIC -O"}
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CFLAGS=${CFLAGS-"-O"}
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LDSHARED=${LDSHARED-"cc -G"};;
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AIX*) # Courtesy of dbakker@arrayasolutions.com
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SFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
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CFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
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LDSHARED=${LDSHARED-"xlc -G"};;
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# send working options for other systems to support@gzip.org
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*) SFLAGS=${CFLAGS-"-O"}
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CFLAGS=${CFLAGS-"-O"}
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LDSHARED=${LDSHARED-"cc -shared"};;
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esac
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fi
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SHAREDLIB=${SHAREDLIB-"libz$shared_ext"}
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SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"}
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SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"}
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if test $shared -eq 1; then
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echo Checking for shared library support...
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# we must test in two steps (cc then ld), required at least on SunOS 4.x
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if test "`($CC -c $SFLAGS $test.c) 2>&1`" = "" &&
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test "`($LDSHARED -o $test$shared_ext $test.o) 2>&1`" = ""; then
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CFLAGS="$SFLAGS"
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LIBS="$SHAREDLIBV"
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echo Building shared library $SHAREDLIBV with $CC.
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elif test -z "$old_cc" -a -z "$old_cflags"; then
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echo No shared library support.
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shared=0;
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else
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echo 'No shared library support; try without defining CC and CFLAGS'
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shared=0;
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fi
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fi
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if test $shared -eq 0; then
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LDSHARED="$CC"
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echo Building static library $LIBS version $VER with $CC.
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else
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LDFLAGS="-L. ${SHAREDLIBV}"
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fi
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cat > $test.c <<EOF
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#include <unistd.h>
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int main() { return 0; }
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EOF
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if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
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sed < zconf.in.h "/HAVE_UNISTD_H/s%0%1%" > zconf.h
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echo "Checking for unistd.h... Yes."
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else
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cp -p zconf.in.h zconf.h
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echo "Checking for unistd.h... No."
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fi
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cat > $test.c <<EOF
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#include <stdio.h>
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#include <stdarg.h>
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#include "zconf.h"
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int main()
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{
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#ifndef STDC
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choke me
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#endif
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return 0;
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}
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EOF
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if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
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echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()"
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cat > $test.c <<EOF
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#include <stdio.h>
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#include <stdarg.h>
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int mytest(char *fmt, ...)
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{
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char buf[20];
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va_list ap;
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va_start(ap, fmt);
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vsnprintf(buf, sizeof(buf), fmt, ap);
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va_end(ap);
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return 0;
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}
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int main()
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{
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return (mytest("Hello%d\n", 1));
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}
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EOF
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if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
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echo "Checking for vsnprintf() in stdio.h... Yes."
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cat >$test.c <<EOF
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#include <stdio.h>
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#include <stdarg.h>
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int mytest(char *fmt, ...)
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{
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int n;
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char buf[20];
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va_list ap;
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va_start(ap, fmt);
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n = vsnprintf(buf, sizeof(buf), fmt, ap);
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va_end(ap);
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return n;
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}
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int main()
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{
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return (mytest("Hello%d\n", 1));
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}
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EOF
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if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
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echo "Checking for return value of vsnprintf()... Yes."
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else
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CFLAGS="$CFLAGS -DHAS_vsnprintf_void"
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echo "Checking for return value of vsnprintf()... No."
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echo " WARNING: apparently vsnprintf() does not return a value. zlib"
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echo " can build but will be open to possible string-format security"
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echo " vulnerabilities."
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fi
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else
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CFLAGS="$CFLAGS -DNO_vsnprintf"
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echo "Checking for vsnprintf() in stdio.h... No."
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echo " WARNING: vsnprintf() not found, falling back to vsprintf(). zlib"
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echo " can build but will be open to possible buffer-overflow security"
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echo " vulnerabilities."
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cat >$test.c <<EOF
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#include <stdio.h>
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#include <stdarg.h>
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int mytest(char *fmt, ...)
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{
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int n;
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char buf[20];
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va_list ap;
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va_start(ap, fmt);
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n = vsprintf(buf, fmt, ap);
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va_end(ap);
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return n;
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}
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int main()
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{
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return (mytest("Hello%d\n", 1));
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}
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EOF
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if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
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echo "Checking for return value of vsprintf()... Yes."
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else
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CFLAGS="$CFLAGS -DHAS_vsprintf_void"
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echo "Checking for return value of vsprintf()... No."
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echo " WARNING: apparently vsprintf() does not return a value. zlib"
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echo " can build but will be open to possible string-format security"
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echo " vulnerabilities."
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fi
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fi
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else
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echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()"
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cat >$test.c <<EOF
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#include <stdio.h>
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int mytest()
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{
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char buf[20];
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snprintf(buf, sizeof(buf), "%s", "foo");
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return 0;
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}
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int main()
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{
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return (mytest());
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}
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EOF
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if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
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echo "Checking for snprintf() in stdio.h... Yes."
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cat >$test.c <<EOF
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#include <stdio.h>
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int mytest()
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{
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char buf[20];
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return snprintf(buf, sizeof(buf), "%s", "foo");
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}
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int main()
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{
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return (mytest());
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}
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EOF
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if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
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echo "Checking for return value of snprintf()... Yes."
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else
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CFLAGS="$CFLAGS -DHAS_snprintf_void"
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echo "Checking for return value of snprintf()... No."
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echo " WARNING: apparently snprintf() does not return a value. zlib"
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echo " can build but will be open to possible string-format security"
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echo " vulnerabilities."
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fi
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else
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CFLAGS="$CFLAGS -DNO_snprintf"
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echo "Checking for snprintf() in stdio.h... No."
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echo " WARNING: snprintf() not found, falling back to sprintf(). zlib"
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echo " can build but will be open to possible buffer-overflow security"
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echo " vulnerabilities."
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cat >$test.c <<EOF
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#include <stdio.h>
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int mytest()
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{
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char buf[20];
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return sprintf(buf, "%s", "foo");
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}
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int main()
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{
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return (mytest());
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}
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EOF
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if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
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echo "Checking for return value of sprintf()... Yes."
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else
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CFLAGS="$CFLAGS -DHAS_sprintf_void"
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echo "Checking for return value of sprintf()... No."
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echo " WARNING: apparently sprintf() does not return a value. zlib"
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echo " can build but will be open to possible string-format security"
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echo " vulnerabilities."
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fi
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fi
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fi
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cat >$test.c <<EOF
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#include <errno.h>
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int main() { return 0; }
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EOF
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if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
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echo "Checking for errno.h... Yes."
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else
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echo "Checking for errno.h... No."
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CFLAGS="$CFLAGS -DNO_ERRNO_H"
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fi
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cat > $test.c <<EOF
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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caddr_t hello() {
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return mmap((caddr_t)0, (off_t)0, PROT_READ, MAP_SHARED, 0, (off_t)0);
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}
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EOF
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if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
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CFLAGS="$CFLAGS -DUSE_MMAP"
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echo Checking for mmap support... Yes.
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else
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echo Checking for mmap support... No.
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fi
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CPP=${CPP-"$CC -E"}
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case $CFLAGS in
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*ASMV*)
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if test "`nm $test.o | grep _hello`" = ""; then
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CPP="$CPP -DNO_UNDERLINE"
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echo Checking for underline in external names... No.
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else
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echo Checking for underline in external names... Yes.
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fi;;
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esac
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rm -f $test.[co] $test $test$shared_ext
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# udpate Makefile
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sed < Makefile.in "
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/^CC *=/s#=.*#=$CC#
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/^CFLAGS *=/s#=.*#=$CFLAGS#
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/^CPP *=/s#=.*#=$CPP#
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/^LDSHARED *=/s#=.*#=$LDSHARED#
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/^LIBS *=/s#=.*#=$LIBS#
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/^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
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/^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
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/^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
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/^AR *=/s#=.*#=$AR#
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/^RANLIB *=/s#=.*#=$RANLIB#
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/^EXE *=/s#=.*#=$EXE#
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/^prefix *=/s#=.*#=$prefix#
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/^exec_prefix *=/s#=.*#=$exec_prefix#
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/^libdir *=/s#=.*#=$libdir#
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/^includedir *=/s#=.*#=$includedir#
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/^mandir *=/s#=.*#=$mandir#
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/^LDFLAGS *=/s#=.*#=$LDFLAGS#
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" > Makefile
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