[xmlsec] MinGW build pull request
xmlsec at roumenpetrov.info
Tue May 16 13:55:52 PDT 2017
Aleksey Sanin wrote:
> Roumen (and anyone else who has experience with MinGW environment),
> There is a pull request to make changes to MinGW build. Unfortunately,
> I have no experience on this platform and would love to get your
> feedback on whether this is the correct change or not:
My recommendation is to reject the request for the reasons described below:
Not mingw* specific.
What is wrong with long cast for printf %ld flag?
Wrong . Not mingw* specific.
mingw* produce native binaries that use OS functionality .
priv_key_suffix is related to OS (mis)functionality. Definitely is
not related to mingw GNU compiler. It is not compile time flag. It is
If I remember well it is hack for MS crypto store for certain version of
Perhaps logic could be improved to be forward compatible. I mean
something like this "if OS version >= Win-XP then use methodA else methodB".
For example runtime in above case mean build is on win2k and using the
same build tree run tests on Win-XP, Win7 ... .
- # To avoid problem with loading of a shared library (dlopen or
- # equivalent) at run time on some platforms we need to link
- # everything statically (it works without hack on 9x and under
- # emulation; on nt 5.x (w2k,xp) the error is 998: "Invalid
- # access to memory location").
I guess that above comment describes issue clearly.
If on OS version >= Win-7 issue does not exist then fine. May be issue
was specific to 32-bit MS OS and does not exist for 64 bit .
Unfortunately today I cannot test xmlsec in native environment.
If I remember well Microsoft loader fail to load some shared
libraries(dll) dynamically due to limited functionality (failure in
initialization of some global variables(?)).
So removing enable_static_linking="yes" and enable_crypto_dl="no" needs
addition clarification (testing on native platform) and today I cannot help.
=> Must be separate request.
d) shared vs static build and definition of XMLSEC_STATIC
Define of -DXMLSEC_STATIC=1 in configure is just plain wrong.
First I would like to point that xmlsec uses libtool for builds in unix
The build is controlled by libtool flags exported to configure
--enable-shared[=PKGS] build shared libraries [default=yes]
--enable-static[=PKGS] build static libraries [default=yes]
During make phase libtool shows one command but actually performs two
compilation - one for static and one for shared.
Logic should be in common header something like following
# defines for shared build
# defines for static build
Remark : libtool pass -DPIE if compilation is for shared library
Note I have no issue with current build system and I'm not sure why is
necessary to change code.
May be mingw* complier is old and issue is for mingw* gcc >= 6*.
Out of scope but you may want to update libtool macros in configure script
Please find attached file "0004-remove-obsolete-AC_PROG_LIBTOOL.patch"
AC_PROG_LIBTOOL is defined for backward compatibility in libtool 2+ and
LT_INIT([win32-dll]) is enough.
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