Re: [xml] compile libxml2.7.8 under cygwin&Win7 with mingw toolchain

["lin hong" <lhong amnh org>]

> lin hong wrote:
> > Hi, all
> >
> > we are making a release of our software with libxml under windows. we
> > end
> > up compiling it from source code, I thought it might worth writing it
> > down
> > here.
> >
> > first thing is, if you don't care about dependency of cygwin libraries
> > (which means the program require cygwin installed to run), just get
> > libxml
> > through cygwin setup. For us, it's not fair to ask normal user to
> > install
> > cygwin, so we try binary first.
>
> I'm more comfortable with MSYS.

most work we did are under mac/linux, but for windows release, we are
using cygwin. is MSYS better than cygwin? I'm not familiar with windows at
all.

> > we got the binary from http://xmlsoft.org/sources/win32/
> >
> > but it does not work on cygwin + Win7 , just try to run any exe file
> > under
> > /bin dir, we got this.
> >
> > ./xsltproc.exe
> > /usr/i686-pc-mingw32/xslt_xml2/bin/xsltproc.exe: error while loading
> > shared libraries: ?: cannot open shared object file: No such file or
> > directory
>
> Where do the .dll live?  In /usr/i686-pc-mingw32/xslt_xml2/bin?  If not,
> you'll need to add the path to the dll to PATH or move the dll to this
> xslt_xml2/bin directory.

what ".dll" files do we need to move under /bin ?

> > I believe it works for WinXP because I saw the msg on the website:
> > "The binaries are supported on an operating system based on the
> > NT-kernel,
> > such as Windows NT, Windows 2000 and Windows XP, exclusively"
> >
> > also it seems require iconv, which we don't really need.
>
> libxslt requires it.

we did compile libxslt later without iconv -- at least I thought it works.
maybe we are missing some part of function.

> > anyway, we decide to compile it ourselves,  here are the changes I did:
>
> You'll need the patches I just submitted to this list.
>
> > 0. for windows, makefile and configure are under /win32, run configure
> > like Readme.txt sugguests:
>
> I believe you'll need to specify the --host switch if you're using Cygwin.
>
> > cscript configure.js threads:no static:yes compiler:mingw iconv:no
> > prefix=where_you_want_to_install   include=where_your_mingw_include_is
> > lib=where_your_mingw_lib_is debug=yes
> >
> > 1. We are using mingw , so Makefile.mingw is the one for us. modify
> > Makefile.mingw:
>
> With MSYS I just use configure to create the Makefile.
>
> > 1.1 We want the program be independent from cygwin library, add
> > "-mno-cygwin" to CC
> > ! CC = gcc.exe -mno-cygwin
>
> The -mno-cygwin switch is dead.  Cygwin now uses a cross build concept
> instead of a bastardized separation of MinGW gcc and Cygwin gcc.  This
> is the reason you'll need to specify the --host if you Cygwin to
> configure it.

really? we are using cygwin1.7.9(0.237/5/3).  is the "--host" option for
cygwin or just for libxml?
if the "--host" option can take care of MingGW/Cygwin choice problem, it
would be great.

> > 1.2 Want more output during compiling? add "-v"
> > ! CFLAGS += -v -DWIN32 -D_WINDOWS -D_MBCS -DNOLIBTOOL
>
> I don't know about these defines, I did not have to do that.

"-v" is just verbose option. it's not necessary. other options are default
by the makefile.

> > 1.3 The default gcc linker refuse to look into Mingw directory before
> > Cygwin directory, I don't know why, so I use flexlink instead, modify
> > LD:
>
> Again you need to add --host to the configure.
>
> > LD = flexlink
> > also add flags flexlink needs:
> > + #flexlink flag
> > + FL_LDFLAGS = -chain mingw
> > + FL_LDFLAGS += -L $(BINDIR) -L $(LIBPREFIX)
>
> I don't have any idea what flexlink is.

flexlink is linker that manage symbols for windows dll. make lift easier
for windows rookie like me, you can download it from
http://alain.frisch.fr/flexdll.html.

> > 1.4 Then call our LD with its flags to make "dll"
> > # Creates the libxml shared object.
> > ! #XMLSO_LDFLAGS = $(LDFLAGS) -shared -Wl,--dll
> > -Wl,--out-implib,$(BINDIR)/$(XML_IMP)
> >   $(BINDIR)/$(XML_SO) : $(BINDIR) $(XML_OBJS)
> > !  $(LD) $(FL_LDFLAGS) -o $(BINDIR)/$(XML_SO) $(XML_OBJS) $(LIBS)
>
> Configure with --disable-static --enable-shared or vice versa.

I thought we need to set "static=1", so here we should do --enable-static
& --disable-shared?

> > 1.5 Make ".a" , there is a typo in the original makefile, they mess up
> > the
> > "/" with "\" -- you will get a "bin.mingwlibxml2.a" instead of
> > "bin.mingw/libxml2.a" because of this.
> >  # Creates the libxml archive.
> >   $(BINDIR)/$(XML_A) : $(BINDIR) $(XML_OBJS_A)
> > !  $(AR) $(ARFLAGS) $(BINDIR)/$(XML_A) $(XML_OBJS_A)
>
> The Makefile.mingw is probably constructed to be used with mingw32-make
> which can handle the \ in paths but lacks in other things.

where is "mingw32-make"?

> > 1.6 Make sure STATIC is set to 1 in config.mingw -- if you did configure
> > with "static:yes", you are good. Add "-exe" to flexlink so it will
> > create
> > executable instead of dll file.
> > ! # An implicit rule for xmllint and friends.
> > ! # STATIC=1 is set in config.mingw
> > ! # I also change XML_BASENAME to XML_NAME.(-llibxml2 to -lxml2)
> >   ifeq ($(STATIC),1)
> >   $(BINDIR)/%.exe : $(UTILS_SRCDIR)/%.c
> >    $(CC) -DLIBXML_STATIC $(CFLAGS) -o $(subst
> > .c,.o,$(UTILS_INTDIR)/$(<F))
> > -c $<
> > !  # $(LD) $(LDFLAGS) -o $@ $(subst .c,.o,$(UTILS_INTDIR)/$(<F))
> > -l$(XML_BASENAME) $(LIBS)
> > !  $(LD) $(FL_LDFLAGS) -exe -o $@ $(subst .c,.o,$(UTILS_INTDIR)/$(<F))
> > -l$(XML_NAME) $(LIBS)
> >
> > That's pretty much everything for makefile.
> >
> > 3. so far everything we did so far is under win32, config.h in the upper
> > dir needs to be changed
> >
> > in config.h, find these two undef
> >
> >    /* Determine what socket length (socklen_t) data type is */
> >    #undef XML_SOCKLEN_T
> >    /* Define to 1 if you have the <stdint.h> header file. */
> >    #undef HAVE_STDINT_H
> >
> > Define them
> >
> > Without stdint.h you will get error message like "uint32 undefined".
> >
> > 4. set flag C_INCLUDE_PATH.
> > Set c_include_path flag can fix the "could not find libxml/xxx.h"
> > problem
> > Head files are under /libxml2-2.7.8/include and
> > /libxml2-2.7.8/include/libxml/,
> > to make our gcc look into these directories, we need to point
> > C_INCLUDE_PATH to them,  just setting C_FLAGS is NOT enough -- that's
> > really really strange.
> > although later I found out /libxml2-2.7.8/libxml/ also have a set of all
> > head files, so maybe pointing C_INCLUDE_PATH to that is also ok.
> >
> >
> > OK,  take a breath and run
> >
> > make -f Makefile.mingw
> >
> > that's it.
>
> Without my patch xmlcatalog will fail to read the entries in the catalog
> if you use GCC-4.6.1.
>
> All I needed to do with MinGW + MSYS otherwise was
>
> cd libxml2-2.7.8
> mkdir bld
> cd bld
> ../configure --prefix=/mingw --without-python --enable-shared
> --disable-static
> make
> make install
>
> I've also built it with the python bindings but you must ensure that
> your environment is set up with PYTHON variables.
>
> --
> Earnie
> -- https://sites.google.com/site/earnieboyd/