1 files changed, 86 insertions, 0 deletions

diff --git a/configure b/configure
new file mode 100755
index 0000000..a354e4c
--- /dev/null
+++ b/configure
@@ -0,0 +1,86 @@
+#!/bin/sh
+# configure script for zlib. This script is needed only if
+# you wish to build a shared library and your system supports them,
+# of if you need special compiler, flags or install directory.
+# Otherwise, you can just use directly "make test; make install"
+#
+# To impose specific compiler or flags or install directory, use for example:
+#    prefix=$HOME CC=cc CFLAGS="-O4" ./configure
+# or for csh/tcsh users:
+#    (setenv prefix $HOME; setenv CC cc; setenv CFLAGS "-O4"; ./configure)
+# LDSHARED is the command to be used to create a shared library
+
+LIBS=libz.a
+VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`
+AR=${AR-"ar rc"}
+RANLIB=${RANLIB-"ranlib"}
+prefix=${prefix-/usr/local}
+exec_prefix=${exec_prefix-$prefix}
+
+test -z "$CC" && echo Checking for gcc...
+test=ztest$$
+cat > $test.c <<EOF
+int hello() { printf("hello\n"); }
+EOF
+if test -z "$CC" && (gcc -c -O3 $test.c) 2>/dev/null; then
+  CC=gcc
+  SFLAGS=${CFLAGS-"-fPIC -O3"}
+  CFLAGS=${CFLAGS-"-O3"}
+  LDSHARED=${LDSHARED-"gcc -shared"}
+else
+  # find system name and corresponding cc options
+  CC=${CC-cc}
+  case `(uname -sr || echo unknown) 2>/dev/null` in
+  SunOS\ 5*) SFLAGS=${CFLAGS-"-fast -xcg89 -KPIC -R."}
+             CFLAGS=${CFLAGS-"-fast -xcg89"}
+             LDSHARED=${LDSHARED-"cc -G"};;
+  SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"}
+             CFLAGS=${CFLAGS-"-O2"}
+             LDSHARED=${LDSHARED-"ld"};;
+  IRIX*)     SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."}
+             CFLAGS=${CFLAGS-"-ansi -O2"}
+             LDSHARED=${LDSHARED-"cc -shared"};;
+  QNX*)      SFLAGS=${CFLAGS-"-4 -O"}
+             CFLAGS=${CFLAGS-"-4 -O"}
+             LDSHARED=${LDSHARED-"cc"}
+             RANLIB=${RANLIB-"true"}
+             AR="cc -A";;
+  SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "}
+             CFLAGS=${CFLAGS-"-O3"}
+             LDSHARED=${LDSHARED-"cc -dy -KPIC -G"};;
+  HP-UX*)    SFLAGS=${CFLAGS-"-O +z"}
+             CFLAGS=${CFLAGS-"-O"}
+             LDSHARED=${LDSHARED-"ld -b"}
+             SHAREDLIBS='libz.sl';;
+  # send working options for other systems to gzip@prep.ai.mit.edu
+  *)         SFLAGS=${CFLAGS-"-O"}
+             CFLAGS=${CFLAGS-"-O"}
+             LDSHARED=${LDSHARED-"cc -shared"};;
+  esac
+fi
+
+echo Checking for shared library support...
+# we must test in two steps (cc then ld), required at least on SunOS 4.x
+if test "`($CC -c $SFLAGS $test.c) 2>&1`" = "" &&
+   test "`($LDSHARED -o $test.so $test.o) 2>&1`" = ""; then
+  CFLAGS="$SFLAGS"
+  LIBS='libz.so.$(VER)'
+  echo Building shared library libz.so.$VER with $CC.
+else
+  LDSHARED="$CC"
+  echo Building static library $LIBS version $VER with $CC.
+fi
+rm -f $test.[co] $test.so
+
+# udpate Makefile
+sed < Makefile.in "
+/^CC *=/s/=.*/=$CC/
+/^CFLAGS *=/s/=.*/=$CFLAGS/
+/^LDSHARED *=/s/=.*/=$LDSHARED/
+/^LIBS *=/s,=.*,=$LIBS,
+/^AR *=/s/=.*/=$AR/
+/^RANLIB *=/s,=.*,=$RANLIB,
+/^VER *=/s/=.*/=$VER/
+/^prefix *=/s,=.*,=$prefix,
+/^exec_prefix *=/s,=.*,=$exec_prefix,
+" > Makefile