385593 - 32-bit build fails on 64-bit Linux systems

Status: RESOLVED DUPLICATE of bug 372428

(Firefox Build System :: General, defect)

Description

[Bill Gianopoulos [:WG9s]]

I am trying to build both 32-bit and 64-bit Firefox executables using a Linux laptop with an AMD g4-bit processor under Fedora Core 6.

Gor the 32-bit build I have the following additional lines specified in my .mozconfig file:


  export CFLAGS=-m32
  export CXXFLAGS=-m32
  export PKG_CONFIG_PATH=/usr/lib/pkgconfig
  ac_add_options --x-libraries=/usr/lib

The CFLAGS and CXXLFAGS changes are failry self explanatory.  Defining the PKG_CONFIG_PATH makes pkg-config look first aht e 32-bit package directory before the 64-bit one.  This makes configure find the correct flags and libraries for the 32 bit versions instead of the 64-bit versions.

Specifying X-libraries in necessary because if you omit this line configure ends up deciding to use /usr/lib64 for this, which is obviously not what you would want for a 32-bit build.

One would think this should be sufficient to create a 32-bit build, however, there are places in the build system where the value of OS_TEST is checked and if it is set to x86_64 it is assumed a 64-bit build is being done.

I tried setting the --disable-64bit configure option, but this did not help either.

The value of OS_TEST ends up being the output of a uname -m command and is not affected by either the value configure calculates for HAVE_64BIT_OS or the value you configure for --disable-64bit.

The build error I receive is as follows:

xptcinvoke_x86_64_linux.cpp
c++ -o xptcinvoke_x86_64_linux.o -c -I../../../../../../dist/include/system_wrappers -include /home/wag/mozilla/trunk/config/gcc_hidden.h -DMOZILLA_INTERNAL_API -DOSTYPE=\"Linux2.6.18-1.2869\" -DOSARCH=Linux -DBUILD_ID=2007062305 -DEXPORT_XPTC_API -D_IMPL_NS_COM -I/home/wag/mozilla/trunk/xpcom/reflect/xptcall/src/md/unix/../.. -I/home/wag/mozilla/trunk/xpcom/reflect/xptcall/src/md/unix/../../../../xptinfo/src  -I../../../../../../dist/include/string -I../../../../../../dist/include   -I../../../../../../dist/include/xpcom -I../../../../../../dist/include/nspr  -DMOZ_PNG_READ -DMOZ_PNG_WRITE     -fPIC   -fno-rtti -fno-exceptions -Wall -Wconversion -Wpointer-arith -Wcast-align -Woverloaded-virtual -Wsynth -Wno-ctor-dtor-privacy -Wno-non-virtual-dtor -Wno-long-long -pedantic -m32 -fshort-wchar -pthread -pipe  -DNDEBUG -DTRIMMED -Os -freorder-blocks -fno-reorder-functions -gstabs+   -DMOZILLA_CLIENT -include ../../../../../../mozilla-config.h -Wp,-MD,.deps/xptcinvoke_x86_64_linux.pp /home/wag/mozilla/trunk/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_x86_64_linux.cpp
../../../../../../dist/include/xpcom/xptinfo.h: In member function ‘const nsXPTCMiniVariant* nsXPTConstant::GetValue() const’:
../../../../../../dist/include/xpcom/xptinfo.h:220: warning: type-punning to incomplete type might break strict-aliasing rules
/home/wag/mozilla/trunk/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_x86_64_linux.cpp: In function ‘nsresult NS_InvokeByIndex_P(nsISupports*, PRUint32, PRUint32, nsXPTCVariant*)’:
/home/wag/mozilla/trunk/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_x86_64_linux.cpp:82: warning: ‘value’ may be used uninitialized in this function
/home/wag/mozilla/trunk/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_x86_64_linux.cpp:152: error: invalid register name for ‘d0’
/home/wag/mozilla/trunk/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_x86_64_linux.cpp:153: error: invalid register name for ‘d1’
/home/wag/mozilla/trunk/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_x86_64_linux.cpp:154: error: invalid register name for ‘d2’
/home/wag/mozilla/trunk/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_x86_64_linux.cpp:155: error: invalid register name for ‘d3’
/home/wag/mozilla/trunk/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_x86_64_linux.cpp:156: error: invalid register name for ‘d4’
/home/wag/mozilla/trunk/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_x86_64_linux.cpp:157: error: invalid register name for ‘d5’
/home/wag/mozilla/trunk/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_x86_64_linux.cpp:158: error: invalid register name for ‘d6’
/home/wag/mozilla/trunk/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_x86_64_linux.cpp:159: error: invalid register name for ‘d7’
/home/wag/mozilla/trunk/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_x86_64_linux.cpp:181: error: invalid register name for ‘a4’
/home/wag/mozilla/trunk/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_x86_64_linux.cpp:182: error: invalid register name for ‘a5’
gmake[9]: *** [xptcinvoke_x86_64_linux.o] Error 1
gmake[9]: Leaving directory `/home/wag/mozilla/trunk/fx32-obj/xpcom/reflect/xptcall/src/md/unix'
gmake[8]: *** [libs] Error 2
gmake[8]: Leaving directory `/home/wag/mozilla/trunk/fx32-obj/xpcom/reflect/xptcall/src/md'
gmake[7]: *** [libs] Error 2
gmake[7]: Leaving directory `/home/wag/mozilla/trunk/fx32-obj/xpcom/reflect/xptcall/src'
gmake[6]: *** [libs] Error 2
gmake[6]: Leaving directory `/home/wag/mozilla/trunk/fx32-obj/xpcom/reflect/xptcall'
gmake[5]: *** [libs] Error 2
gmake[5]: Leaving directory `/home/wag/mozilla/trunk/fx32-obj/xpcom/reflect'
gmake[4]: *** [libs] Error 2
gmake[4]: Leaving directory `/home/wag/mozilla/trunk/fx32-obj/xpcom'
gmake[3]: *** [libs_tier_xpcom] Error 2
gmake[3]: Leaving directory `/home/wag/mozilla/trunk/fx32-obj'
gmake[2]: *** [tier_xpcom] Error 2
gmake[2]: Leaving directory `/home/wag/mozilla/trunk/fx32-obj'
make[1]: *** [default] Error 2
make[1]: Leaving directory `/home/wag/mozilla/trunk/fx32-obj'
make: *** [build] Error 2

Comment 1

[Bill Gianopoulos [:WG9s]]

Attachment: workaround

I have been successfully using this workaround for a couple of weeks in order to produce the 32-bit build.  I am not at all sure it is the correct fix.  What it does is that when configure determines it is not doing a 64-bit build, it checks and if OS_TEST is set to x86_64 it changes it to i686.

The build continues to completion with this patch applied.

Comment 2

[Bill Gianopoulos [:WG9s]]

Attachment: configure.in this time

I take it I am really supposed to change this in configure.in and let configure get remade by egg.  I also added a comment.

Comment 3

[Benjamin Smedberg]

Comment on attachment 269534 [details] [diff] [review]
configure.in this time

I'm pretty sure this isn't right, but I don't know what is. Asking cls.

Comment 4

[Bill Gianopoulos [:WG9s]]

I'm pretty sure this is not right either.  I originally tried doing this with the more complicated cross compile definitions rather than by trying to get it to happen more automatically.  That resulted in the following error which I could net figure out.

../../../config/./nsinstall -R -m 444 /home/wag/mozilla/trunk/nsprpub/pr/include/md/_aix32.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_aix64.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_beos.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_bsdi.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_darwin.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_dgux.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_freebsd.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_hpux32.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_hpux64.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_irix32.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_irix64.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_linux.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_ncr.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_nec.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_netbsd.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_nextstep.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_nto.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_openbsd.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_openvms.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_os2.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_osf1.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_qnx.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_reliantunix.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_rhapsody.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_riscos.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_scoos.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_solaris.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_sony.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_sunos4.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_unixware7.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_unixware.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_win16.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_win95.cfg /home/wag/mozilla/trunk/nsprpub/pr/include/md/_winnt.cfg /home/wag/mozilla/trunk/fxcc-obj/dist/include/nspr/md
gmake[6]: *** [export] Segmentation fault

Comment 5

[cls]

Comment on attachment 269534 [details] [diff] [review]
configure.in this time

Yeah, it seems...incomplete.  I think I prefer the fix in bug 372428.