This commit was generated by cvs2svn to compensate for changes in r26947,

which included commits to RCS files with non-trunk default branches.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@26948 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/zlib/ChangeLog

@@ -1,6 +1,64 @@
 
 		ChangeLog file for zlib
 
+Changes in 1.1.4 (11 March 2002)
+- ZFREE was repeated on same allocation on some error conditions.
+  This creates a security problem described in
+  http://www.zlib.org/advisory-2002-03-11.txt
+- Returned incorrect error (Z_MEM_ERROR) on some invalid data
+- Avoid accesses before window for invalid distances with inflate window
+  less than 32K.
+- force windowBits > 8 to avoid a bug in the encoder for a window size
+  of 256 bytes. (A complete fix will be available in 1.1.5).
+	
+Changes in 1.1.3 (9 July 1998)
+- fix "an inflate input buffer bug that shows up on rare but persistent
+  occasions" (Mark)
+- fix gzread and gztell for concatenated .gz files (Didier Le Botlan)
+- fix gzseek(..., SEEK_SET) in write mode
+- fix crc check after a gzeek (Frank Faubert)
+- fix miniunzip when the last entry in a zip file is itself a zip file
+  (J Lillge)
+- add contrib/asm586 and contrib/asm686 (Brian Raiter)
+  See http://www.muppetlabs.com/~breadbox/software/assembly.html
+- add support for Delphi 3 in contrib/delphi (Bob Dellaca)
+- add support for C++Builder 3 and Delphi 3 in contrib/delphi2 (Davide Moretti)
+- do not exit prematurely in untgz if 0 at start of block (Magnus Holmgren)
+- use macro EXTERN instead of extern to support DLL for BeOS (Sander Stoks)
+- added a FAQ file
+
+- Support gzdopen on Mac with Metrowerks (Jason Linhart)
+- Do not redefine Byte on Mac (Brad Pettit & Jason Linhart)
+- define SEEK_END too if SEEK_SET is not defined (Albert Chin-A-Young)
+- avoid some warnings with Borland C (Tom Tanner)
+- fix a problem in contrib/minizip/zip.c for 16-bit MSDOS (Gilles Vollant)
+- emulate utime() for WIN32 in contrib/untgz  (Gilles Vollant)
+- allow several arguments to configure (Tim Mooney, Frodo Looijaard)
+- use libdir and includedir in Makefile.in (Tim Mooney)
+- support shared libraries on OSF1 V4 (Tim Mooney)
+- remove so_locations in "make clean"  (Tim Mooney)
+- fix maketree.c compilation error (Glenn, Mark)
+- Python interface to zlib now in Python 1.5 (Jeremy Hylton)
+- new Makefile.riscos (Rich Walker)
+- initialize static descriptors in trees.c for embedded targets (Nick Smith)
+- use "foo-gz" in example.c for RISCOS and VMS (Nick Smith)
+- add the OS/2 files in Makefile.in too (Andrew Zabolotny)
+- fix fdopen and halloc macros for Microsoft C 6.0 (Tom Lane)
+- fix maketree.c to allow clean compilation of inffixed.h (Mark)
+- fix parameter check in deflateCopy (Gunther Nikl)
+- cleanup trees.c, use compressed_len only in debug mode (Christian Spieler)
+- Many portability patches by Christian Spieler:
+  . zutil.c, zutil.h: added "const" for zmem*
+  . Make_vms.com: fixed some typos
+  . Make_vms.com: msdos/Makefile.*: removed zutil.h from some dependency lists
+  . msdos/Makefile.msc: remove "default rtl link library" info from obj files
+  . msdos/Makefile.*: use model-dependent name for the built zlib library
+  . msdos/Makefile.emx, nt/Makefile.emx, nt/Makefile.gcc:
+     new makefiles, for emx (DOS/OS2), emx&rsxnt and mingw32 (Windows 9x / NT)
+- use define instead of typedef for Bytef also for MSC small/medium (Tom Lane)
+- replace __far with _far for better portability (Christian Spieler, Tom Lane)
+- fix test for errno.h in configure (Tim Newsham)
+
 Changes in 1.1.2 (19 March 98)
 - added contrib/minzip, mini zip and unzip based on zlib (Gilles Vollant)
   See http://www.winimage.com/zLibDll/unzip.html

src/zlib/INDEX

@@ -1,9 +1,9 @@
 ChangeLog		history of changes
 INDEX			this file
+FAQ			Frequently Asked Questions about zlib
 Make_vms.com		script for Vax/VMS
 Makefile		makefile for Unix (generated by configure)
 Makefile.in		makefile for Unix (template for configure)
-Makefile.msc		makefile for Microsoft C 16-bit
 Makefile.riscos 	makefile for RISCOS
 README			guess what
 algorithm.txt		description of the (de)compression algorithm
@@ -19,6 +19,8 @@ msdos/Makefile.w32      makefile for Microsoft Visual C++ 32-bit
 msdos/Makefile.b32	makefile for Borland C++   32-bit
 msdos/Makefile.bor	makefile for Borland C/C++ 16-bit
 msdos/Makefile.dj2	makefile for DJGPP 2.x
+msdos/Makefile.emx	makefile for EMX 0.9c (32-bit DOS/OS2)
+msdos/Makefile.msc	makefile for Microsoft C 16-bit
 msdos/Makefile.tc	makefile for Turbo C
 msdos/Makefile.wat	makefile for Watcom C
 msdos/zlib.def        	definition file for Windows DLL
@@ -26,6 +28,8 @@ msdos/zlib.rc         	definition file for Windows DLL
 
 nt/Makefile.nt		makefile for Windows NT
 nt/zlib.dnt		definition file for Windows NT DLL
+nt/Makefile.emx		makefile for EMX 0.9c/RSXNT 1.41 (Win32 Intel)
+nt/Makefile.gcc		makefile for Windows NT using GCC (mingw32)
 
 
 		zlib public header files (must be kept):

src/zlib/Make_vms.com

@@ -28,15 +28,15 @@ $ if f$search("SYS$SYSTEM:MMS.EXE").eqs.""
 $  then
 $   dele example.obj;*,minigzip.obj;*
 $   CALL MAKE adler32.OBJ "CC ''CCOPT' adler32" -
-                adler32.c zutil.h zlib.h zconf.h
+                adler32.c zlib.h zconf.h
 $   CALL MAKE compress.OBJ "CC ''CCOPT' compress" -
                 compress.c zlib.h zconf.h
 $   CALL MAKE crc32.OBJ "CC ''CCOPT' crc32" -
-                crc32.c zutil.h zlib.h zconf.h
+                crc32.c zlib.h zconf.h
 $   CALL MAKE deflate.OBJ "CC ''CCOPT' deflate" -
-                deflatec.c deflate.h zutil.h zlib.h zconf.h
+                deflate.c deflate.h zutil.h zlib.h zconf.h
 $   CALL MAKE gzio.OBJ "CC ''CCOPT' gzio" -
-                gsio.c zutil.h zlib.h zconf.h
+                gzio.c zutil.h zlib.h zconf.h
 $   CALL MAKE infblock.OBJ "CC ''CCOPT' infblock" -
                 infblock.c zutil.h zlib.h zconf.h infblock.h
 $   CALL MAKE infcodes.OBJ "CC ''CCOPT' infcodes" -

src/zlib/Makefile.riscos

@@ -1,8 +1,9 @@
 # Project:   zlib_1_03
-
+# Patched for zlib 1.1.2 rw@shadow.org.uk 19980430
+# test works out-of-the-box, installs `somewhere' on demand
 
 # Toolflags:
-CCflags = -c -depend !Depend -IC: -g -throwback  -DRISCOS  -fnah 
+CCflags = -c -depend !Depend -IC: -g -throwback  -DRISCOS  -fah 
 C++flags = -c -depend !Depend -IC: -throwback
 Linkflags = -aif -c++ -o $@ 
 ObjAsmflags = -throwback -NoCache -depend !Depend
@@ -10,37 +11,141 @@ CMHGflags =
 LibFileflags = -c -l -o $@ 
 Squeezeflags = -o $@
 
+# change the line below to where _you_ want the library installed.
+libdest = lib:zlib
 
 # Final targets:
-@.zlib_lib:   @.o.adler32 @.o.compress @.o.crc32 @.o.deflate @.o.gzio \
+@.lib:   @.o.adler32 @.o.compress @.o.crc32 @.o.deflate @.o.gzio \
         @.o.infblock @.o.infcodes @.o.inffast @.o.inflate @.o.inftrees @.o.infutil @.o.trees \
-        @.o.uncompress @.o.zutil 
+        @.o.uncompr @.o.zutil 
         LibFile $(LibFileflags) @.o.adler32 @.o.compress @.o.crc32 @.o.deflate \
         @.o.gzio @.o.infblock @.o.infcodes @.o.inffast @.o.inflate @.o.inftrees @.o.infutil \
-        @.o.trees @.o.uncompress @.o.zutil 
+        @.o.trees @.o.uncompr @.o.zutil 
-@.test:   @.tests.minigzip @.tests.example 
+test:   @.minigzip @.example @.lib
-        echo Please run "Test" in directory tests 
+	@copy @.lib @.libc  A~C~DF~L~N~P~Q~RS~TV
-@.tests.minigzip:   @.o.minigzip @.zlib_lib C:o.Stubs 
+	@echo running tests: hang on.
-        Link $(Linkflags) @.o.minigzip @.zlib_lib C:o.Stubs 
+	@/@.minigzip -f -9 libc
-@.tests.example:   @.o.example @.zlib_lib C:o.Stubs 
+	@/@.minigzip -d libc-gz
-        Link $(Linkflags) @.o.example @.zlib_lib C:o.Stubs 
+	@/@.minigzip -f -1 libc
+	@/@.minigzip -d libc-gz
+	@/@.minigzip -h -9 libc
+	@/@.minigzip -d libc-gz
+	@/@.minigzip -h -1 libc
+	@/@.minigzip -d libc-gz
+	@/@.minigzip -9 libc
+	@/@.minigzip -d libc-gz
+	@/@.minigzip -1 libc
+	@/@.minigzip -d libc-gz
+	@diff @.lib @.libc
+	@echo that should have reported '@.lib and @.libc identical' if you have diff.
+	@/@.example @.fred @.fred
+	@echo that will have given lots of hello!'s.
 
+@.minigzip:   @.o.minigzip @.lib C:o.Stubs 
+        Link $(Linkflags) @.o.minigzip @.lib C:o.Stubs 
+@.example:   @.o.example @.lib C:o.Stubs 
+        Link $(Linkflags) @.o.example @.lib C:o.Stubs
+
+install: @.lib
+	cdir $(libdest)
+	cdir $(libdest).h
+	@copy @.h.zlib $(libdest).h.zlib A~C~DF~L~N~P~Q~RS~TV
+	@copy @.h.zconf $(libdest).h.zconf A~C~DF~L~N~P~Q~RS~TV
+	@copy @.lib $(libdest).lib  A~C~DF~L~N~P~Q~RS~TV
+	@echo okay, installed zlib in $(libdest)
+
+clean:; remove @.minigzip
+	remove @.example
+	remove @.libc
+	-wipe @.o.* F~r~cV
+	remove @.fred
 
 # User-editable dependencies:
 .c.o:
         cc $(ccflags) -o $@ $<
 
 # Static dependencies:
-@.o.example:   @.tests.c.example
-        cc $(ccflags) -o @.o.example @.tests.c.example 
-@.o.minigzip:   @.tests.c.minigzip
-        cc $(ccflags) -o @.o.minigzip @.tests.c.minigzip 
-
 
 # Dynamic dependencies:
-o.minigzip:	tests.c.minigzip
+o.example:	c.example
-o.minigzip:	h.zlib
-o.minigzip:	h.zconf
-o.example:	tests.c.example
 o.example:	h.zlib
 o.example:	h.zconf
+o.minigzip:	c.minigzip
+o.minigzip:	h.zlib
+o.minigzip:	h.zconf
+o.adler32:	c.adler32
+o.adler32:	h.zlib
+o.adler32:	h.zconf
+o.compress:	c.compress
+o.compress:	h.zlib
+o.compress:	h.zconf
+o.crc32:	c.crc32
+o.crc32:	h.zlib
+o.crc32:	h.zconf
+o.deflate:	c.deflate
+o.deflate:	h.deflate
+o.deflate:	h.zutil
+o.deflate:	h.zlib
+o.deflate:	h.zconf
+o.gzio:	c.gzio
+o.gzio:	h.zutil
+o.gzio:	h.zlib
+o.gzio:	h.zconf
+o.infblock:	c.infblock
+o.infblock:	h.zutil
+o.infblock:	h.zlib
+o.infblock:	h.zconf
+o.infblock:	h.infblock
+o.infblock:	h.inftrees
+o.infblock:	h.infcodes
+o.infblock:	h.infutil
+o.infcodes:	c.infcodes
+o.infcodes:	h.zutil
+o.infcodes:	h.zlib
+o.infcodes:	h.zconf
+o.infcodes:	h.inftrees
+o.infcodes:	h.infblock
+o.infcodes:	h.infcodes
+o.infcodes:	h.infutil
+o.infcodes:	h.inffast
+o.inffast:	c.inffast
+o.inffast:	h.zutil
+o.inffast:	h.zlib
+o.inffast:	h.zconf
+o.inffast:	h.inftrees
+o.inffast:	h.infblock
+o.inffast:	h.infcodes
+o.inffast:	h.infutil
+o.inffast:	h.inffast
+o.inflate:	c.inflate
+o.inflate:	h.zutil
+o.inflate:	h.zlib
+o.inflate:	h.zconf
+o.inflate:	h.infblock
+o.inftrees:	c.inftrees
+o.inftrees:	h.zutil
+o.inftrees:	h.zlib
+o.inftrees:	h.zconf
+o.inftrees:	h.inftrees
+o.inftrees:	h.inffixed
+o.infutil:	c.infutil
+o.infutil:	h.zutil
+o.infutil:	h.zlib
+o.infutil:	h.zconf
+o.infutil:	h.infblock
+o.infutil:	h.inftrees
+o.infutil:	h.infcodes
+o.infutil:	h.infutil
+o.trees:	c.trees
+o.trees:	h.deflate
+o.trees:	h.zutil
+o.trees:	h.zlib
+o.trees:	h.zconf
+o.trees:	h.trees
+o.uncompr:	c.uncompr
+o.uncompr:	h.zlib
+o.uncompr:	h.zconf
+o.zutil:	c.zutil
+o.zutil:	h.zutil
+o.zutil:	h.zlib
+o.zutil:	h.zconf

src/zlib/README

@@ -1,7 +1,7 @@
-zlib 1.1.2 is a general purpose data compression library.  All the code
+zlib 1.1.4 is a general purpose data compression library.  All the code
 is thread safe.  The data format used by the zlib library
 is described by RFCs (Request for Comments) 1950 to 1952 in the files 
-ftp://ds.internic.net/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate
+http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate
 format) and rfc1952.txt (gzip format). These documents are also available in
 other formats from ftp://ftp.uu.net/graphics/png/documents/zlib/zdoc-index.html
 
@@ -14,49 +14,54 @@ except example.c and minigzip.c.
 
 To compile all files and run the test program, follow the instructions
 given at the top of Makefile. In short "make test; make install"
-should work for most machines.  For MSDOS, use one of the special
+should work for most machines. For Unix: "./configure; make test; make install"
-makefiles such as Makefile.msc; for VMS, use Make_vms.com or descrip.mms.
+For MSDOS, use one of the special makefiles such as Makefile.msc.
+For VMS, use Make_vms.com or descrip.mms.
 
-Questions about zlib should be sent to <zlib@quest.jpl.nasa.gov> or,
+Questions about zlib should be sent to <zlib@gzip.org>, or to
-if this fails, to the addresses given below in the Copyright section.
+Gilles Vollant <info@winimage.com> for the Windows DLL version.
-The zlib home page is http://www.cdrom.com/pub/infozip/zlib/
+The zlib home page is http://www.zlib.org or http://www.gzip.org/zlib/
-The official zlib ftp site is ftp://ftp.cdrom.com/pub/infozip/zlib/
+Before reporting a problem, please check this site to verify that
-Mark Nelson <markn@tiny.com> wrote an article about zlib for the Jan. 1997
+you have the latest version of zlib; otherwise get the latest version and
+check whether the problem still exists or not.
+
+PLEASE read the zlib FAQ http://www.gzip.org/zlib/zlib_faq.html
+before asking for help.
+
+Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan. 1997
 issue of  Dr. Dobb's Journal; a copy of the article is available in
-http://web2.airmail.net/markn/articles/zlibtool/zlibtool.htm
+http://dogma.net/markn/articles/zlibtool/zlibtool.htm
 
-The changes made in version 1.1.2 are documented in the file ChangeLog.
+The changes made in version 1.1.4 are documented in the file ChangeLog.
-The main changes since 1.1.1 are:
+The only changes made since 1.1.3 are bug corrections:
 
-- added contrib/minzip, mini zip and unzip based on zlib (Gilles Vollant)
+- ZFREE was repeated on same allocation on some error conditions.
-  See http://www.winimage.com/zLibDll/unzip.html
+  This creates a security problem described in
-- preinitialize the inflate tables for fixed codes, to make the code
+  http://www.zlib.org/advisory-2002-03-11.txt
-  completely thread safe (Mark)
+- Returned incorrect error (Z_MEM_ERROR) on some invalid data
-- some simplifications and slight speed-up to the inflate code (Mark)
+- Avoid accesses before window for invalid distances with inflate window
-- fix gzeof on non-compressed files (Allan Schrum)
+  less than 32K.
-- add -std1 option in configure for OSF1 to fix gzprintf (Martin Mokrejs)
+- force windowBits > 8 to avoid a bug in the encoder for a window size
-- use default value of 4K for Z_BUFSIZE for 16-bit MSDOS (Tim Wegner + Glenn)
+  of 256 bytes. (A complete fix will be available in 1.1.5).
-- added os2/Makefile.def and os2/zlib.def (Andrew Zabolotny)
+
-- add shared lib support for UNIX_SV4.2MP (MATSUURA Takanori)
+The beta version 1.1.5beta includes many more changes. A new official
-- do not wrap extern "C" around system includes (Tom Lane)
+version 1.1.5 will be released as soon as extensive testing has been
-- added amiga/Makefile.pup for Amiga powerUP SAS/C PPC (Andreas Kleinert)
+completed on it.
-- allow "make install prefix=..." even after configure (Glenn Randers-Pehrson)
-- allow "configure --prefix $HOME" (Tim Mooney)
 
 
 Unsupported third party contributions are provided in directory "contrib".
 
-A Java implementation of zlib is available in the Java Development Kit 1.1
+A Java implementation of zlib is available in the Java Development Kit
 http://www.javasoft.com/products/JDK/1.1/docs/api/Package-java.util.zip.html
-See the zlib home page http://www.cdrom.com/pub/infozip/zlib/ for details.
+See the zlib home page http://www.zlib.org for details.
 
 A Perl interface to zlib written by Paul Marquess <pmarquess@bfsec.bt.co.uk>
-is in the CPAN (Comprehensive Perl Archive Network) sites, such as:
+is in the CPAN (Comprehensive Perl Archive Network) sites
-ftp://ftp.cis.ufl.edu/pub/perl/CPAN/modules/by-module/Compress/Compress-Zlib*
+http://www.cpan.org/modules/by-module/Compress/
 
 A Python interface to zlib written by A.M. Kuchling <amk@magnet.com>
-is available from the Python Software Association sites, such as:
+is available in Python 1.5 and later versions, see
-ftp://ftp.python.org/pub/python/contrib/Encoding/zlib*.tar.gz
+http://www.python.org/doc/lib/module-zlib.html
 
 A zlib binding for TCL written by Andreas Kupries <a.kupries@westend.com>
 is availlable at http://www.westend.com/~kupries/doc/trf/man/man.html
@@ -77,8 +82,8 @@ Notes for some targets:
 
   From Visual Basic, you can call the DLL functions which do not take
   a structure as argument: compress, uncompress and all gz* functions.
-  See contrib/visual-basic.txt for more information.
+  See contrib/visual-basic.txt for more information, or get
-  I don't know how to handle structures in Visual Basic, sorry.
+  http://www.tcfb.com/dowseware/cmp-z-it.zip
 
 - For 64-bit Irix, deflate.c must be compiled without any optimization.
   With -O, one libpng test fails. The test works in 32 bit mode (with
@@ -93,15 +98,14 @@ Notes for some targets:
 - zlib doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works
   with other compilers. Use "make test" to check your compiler.
 
-- For shared memory multiprocessors, the decompression code assumes that
-  writes to pointers are atomic. Also the functions zalloc and zfree passed
-  to deflateInit must be multi-threaded in this case.
-
 - gzdopen is not supported on RISCOS, BEOS and by some Mac compilers.
 
 - For Turbo C the small model is supported only with reduced performance to
   avoid any far allocation; it was tested with -DMAX_WBITS=11 -DMAX_MEM_LEVEL=3
 
+- For PalmOs, see http://www.cs.uit.no/~perm/PASTA/pilot/software.html
+  Per Harald Myrvang <perm@stud.cs.uit.no>
+
 
 Acknowledgments:
 
@@ -112,7 +116,7 @@ Acknowledgments:
 
 Copyright notice:
 
- (C) 1995-1998 Jean-loup Gailly and Mark Adler
+ (C) 1995-2002 Jean-loup Gailly and Mark Adler
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages

src/zlib/configure

@@ -24,18 +24,34 @@ 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-'${prefix}'}
+libdir=${libdir-'${exec_prefix}/lib'}
+includedir=${includedir-'${prefix}/include'}
 shared_ext='.so'
 shared=0
 gcc=0
 old_cc="$CC"
 old_cflags="$CFLAGS"
 
+while test $# -ge 1
+do
 case "$1" in
-  -h* | --h*) echo 'syntax: configure [ --shared ] [--prefix PREFIX]'; exit 0;;
+    -h* | --h*)
+      echo 'usage:'
+      echo '  configure [--shared] [--prefix=PREFIX]  [--exec_prefix=EXPREFIX]'
+      echo '     [--libdir=LIBDIR] [--includedir=INCLUDEDIR]'
+        exit 0;;
   -p*=* | --p*=*) prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;;
+    -e*=* | --e*=*) exec_prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;;
+    -l*=* | --libdir=*) libdir=`echo $1 | sed 's/[-a-z_]*=//'`; shift;;
+    -i*=* | --includedir=*) includedir=`echo $1 | sed 's/[-a-z_]*=//'`;shift;;
   -p* | --p*) prefix="$2"; shift; shift;;
+    -e* | --e*) exec_prefix="$2"; shift; shift;;
+    -l* | --l*) libdir="$2"; shift; shift;;
+    -i* | --i*) includedir="$2"; shift; shift;;
   -s* | --s*) shared=1; shift;;
-esac
+    esac
+done
 
 test=ztest$$
 cat > $test.c <<EOF
@@ -46,6 +62,7 @@ EOF
 test -z "$CC" && echo Checking for gcc...
 cc=${CC-gcc}
 cflags=${CFLAGS-"-O3"}
+# to force the asm version use: CFLAGS="-O3 -DASMV" ./configure
 case "$cc" in
   *gcc*) gcc=1;;
 esac
@@ -71,7 +88,10 @@ else
   IRIX*)     SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."}
 	     CFLAGS=${CFLAGS-"-ansi -O2"}
 	     LDSHARED=${LDSHARED-"cc -shared"};;
-  OSF1)      SFLAGS=${CFLAGS-"-O -std1"}
+  OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"}
+	     CFLAGS=${CFLAGS-"-O -std1"}
+	     LDSHARED=${LDSHARED-"cc -shared  -Wl,-soname,$SHAREDLIB -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"};;
+  OSF1*)     SFLAGS=${CFLAGS-"-O -std1"}
 	     CFLAGS=${CFLAGS-"-O -std1"}
 	     LDSHARED=${LDSHARED-"cc -shared"};;
   QNX*)      SFLAGS=${CFLAGS-"-4 -O"}
@@ -124,11 +144,25 @@ if test $shared -eq 0; then
   echo Building static library $LIBS version $VER with $CC.
 fi
 
-if test -f /usr/include/unistd.h; then
+cat > $test.c <<EOF
+#include <unistd.h>
+int main() { return 0; }
+EOF
+if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
   CFLAGS="$CFLAGS -DHAVE_UNISTD_H"
+  echo "Checking for unistd.h... Yes."
+else
+  echo "Checking for unistd.h... No."
 fi
 
-if test ! -f /usr/include/errno.h; then
+cat > $test.c <<EOF
+#include <errno.h>
+int main() { return 0; }
+EOF
+if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
+  echo "Checking for errno.h...	 Yes."
+else
+  echo "Checking for errno.h...	 No."
   CFLAGS="$CFLAGS -DNO_ERRNO_H"
 fi
 
@@ -147,12 +181,24 @@ else
   echo Checking for mmap support... No.
 fi
 
+CPP=${CPP-"$CC -E"}
+case $CFLAGS in
+  *ASMV*)
+    if test "`nm $test.o | grep _hello`" = ""; then
+      CPP="$CPP -DNO_UNDERLINE"
+      echo Checking for underline in external names... No.
+    else
+      echo Checking for underline in external names... Yes.
+    fi;;
+esac
+
 rm -f $test.[co] $test$shared_ext
 
 # udpate Makefile
 sed < Makefile.in "
 /^CC *=/s%=.*%=$CC%
 /^CFLAGS *=/s%=.*%=$CFLAGS%
+/^CPP *=/s%=.*%=$CPP%
 /^LDSHARED *=/s%=.*%=$LDSHARED%
 /^LIBS *=/s%=.*%=$LIBS%
 /^SHAREDLIB *=/s%=.*%=$SHAREDLIB%
@@ -160,4 +206,7 @@ sed < Makefile.in "
 /^RANLIB *=/s%=.*%=$RANLIB%
 /^VER *=/s%=.*%=$VER%
 /^prefix *=/s%=.*%=$prefix%
+/^exec_prefix *=/s%=.*%=$exec_prefix%
+/^libdir *=/s%=.*%=$libdir%
+/^includedir *=/s%=.*%=$includedir%
 " > Makefile