mingw32 static build

On Saturday, November 05, 2011 11:12:28 Chris Robinson wrote:

> On Friday, November 04, 2011 8:05:03 PM Libor Capak wrote:
> > i'm trying to cross-compile openal (git version) for win32 mingw.
> > 
> > openal-soft/build$ cmake .. -DCMAKE_TOOLCHAIN_FILE=../XCompile.txt
> > -DHOST=i586-mingw32msvc -DCMAKE_RC_COMPILER=i586-mingw32msvc-windres
> > openal-soft/build$ make
> > ...
> > [ 96%] Building C object CMakeFiles/openal.dir/Alc/backends/wave.obj
> > /home/el/openal-soft/Alc/backends/wave.c:1: warning: -fPIC ignored for
> > target (all code is position independent)
> > Linking C shared library libopenal.so
> 
> Hi.
> 
> This is odd. It looks like it's not cross-compiling even though it's using the 
> cross-compiler. Did you make sure to clean out the build directory before 
> running cmake with those parameters? Where are the executables (and headers 
> and libs) for the cross-compiler stored?

build directory was clean before running cmake.  i586-mingw32msvc-*
files are all in /usr/i586-mingw32msvc/{bin, include, lib} -- it's
mingw32 debian package (wheezy) as i said in first mail.  Using this
debian package i've cross-compiled some other libraries without any
problems.  It's not possible that "Linking C shared library
libopenal.so" (not .dll) is problem of cmake?

> 
> > Please help.  I'd like to compile static library too - I don't have
> > experience with cmake - so don't know how to change XCompile.txt in
> > good way.
> 
> To build a static library, add -DLIBTYPE=STATIC when running cmake. Note, 
> though, that the static lib is not very well tested, and may not work. Also, 
> the lib is LGPL, so the user would need to be able to rebuild the app with 
> their own version of the lib. If your app is open source, then it should be 
> fine, but using a DLL would generally be a better idea since users could just 
> replace that and not bother your app.

this issue, i'have finaly solved by compiling it under windows mingw32
using simple SConstruct (config.h was taken from linux
cross-compilation experiment):

env = Environment(tools = ['mingw'])
env.Append(CPPDEFINES=['_DEBUG', 'AL_ALEXT_PROTOTYPES', 'AL_LIBTYPE_STATIC'])
env.Append(CFLAGS='-g -O2 -Wall -Winline -Wextra')
env.Append(CPPPATH=['include', '.', 'OpenAL32/Include'])
env.StaticLibrary(target='openal', source=Glob('Alc/*.c') + Glob('Alc/backends/winmm.c') + Glob('Alc/backends/null.c') + Glob('Alc/backends/loopback.c') + Glob('Alc/backends/wave.c') + Glob('OpenAL32/*.c'))

and this small patch:

diff --git a/Alc/ALc.c b/Alc/ALc.c
index 399c3ee..e483975 100644
--- a/Alc/ALc.c
+++ b/Alc/ALc.c
@@ -415,8 +415,8 @@ static void alc_init(void);
 static void alc_deinit(void);
 static void alc_deinit_safe(void);

-#ifndef AL_LIBTYPE_STATIC
 UIntMap TlsDestructor;
+#ifndef AL_LIBTYPE_STATIC

it seems to work fine

L.
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