[boost] [context] doesn't build on 32-bit osx

Subject: [boost] [context] doesn't build on 32-bit osx
From: Luke Elliott (lukester_null_at_[hidden])
Date: 2012-08-07 08:02:22

Hello Oliver

There's actually already a ticket on this 
(https://svn.boost.org/trac/boost/ticket/7110 not from me) but since 
it's unassigned I thought I'd post here with a few more details.

bjam address-model=32 -d+2
Performing configuration checks

     - x86                      : yes
Jamfile</Users/macpro/dev/checkouts/boost-trunk/libs/context/build>.gas 
../../../bin.v2/libs/context/build/darwin-4.2.1/debug/address-model-32/architecture-x86/asm/fcontext_i386_sysv_macho_gas.o

         as -o 
"../../../bin.v2/libs/context/build/darwin-4.2.1/debug/address-model-32/architecture-x86/asm/fcontext_i386_sysv_macho_gas.o" 
"../../../libs/context/src/asm/fcontext_i386_sysv_macho_gas.S"

../../../libs/context/src/asm/fcontext_i386_sysv_macho_gas.S:82:suffix 
or operands invalid for `push'
../../../libs/context/src/asm/fcontext_i386_sysv_macho_gas.S:83:suffix 
or operands invalid for `push'
../../../libs/context/src/asm/fcontext_i386_sysv_macho_gas.S:84:suffix 
or operands invalid for `push'
../../../libs/context/src/asm/fcontext_i386_sysv_macho_gas.S:86:suffix 
or operands invalid for `pop'
../../../libs/context/src/asm/fcontext_i386_sysv_macho_gas.S:87:Missing 
operand value assumed absolute 0.
../../../libs/context/src/asm/fcontext_i386_sysv_macho_gas.S:87:junk 
`[.-1b]' after expression
../../../libs/context/src/asm/fcontext_i386_sysv_macho_gas.S:90:suffix 
or operands invalid for `pop'
../../../libs/context/src/asm/fcontext_i386_sysv_macho_gas.S:91:suffix 
or operands invalid for `pop'
../../../libs/context/src/asm/fcontext_i386_sysv_macho_gas.S:92:suffix 
or operands invalid for `pop'
../../../libs/context/src/asm/fcontext_i386_sysv_macho_gas.S:101:suffix 
or operands invalid for `pop'
../../../libs/context/src/asm/fcontext_i386_sysv_macho_gas.S:112:suffix 
or operands invalid for `pop'
../../../libs/context/src/asm/fcontext_i386_sysv_macho_gas.S:113:Missing 
operand value assumed absolute 0.
../../../libs/context/src/asm/fcontext_i386_sysv_macho_gas.S:113:junk 
`[.-3b]' after expression
../../../libs/context/src/asm/fcontext_i386_sysv_macho_gas.S:116:suffix 
or operands invalid for `push'
darwin.compile.c++ 
../../../bin.v2/libs/context/build/darwin-4.2.1/debug/address-model-32/fcontext.o

Applying the 64-bit change from Daniel Larimer on 13th May and adding 
-arch=i386 to the as flags gets things further:

as -o 
"../../../bin.v2/libs/context/build/darwin-4.2.1/debug/address-model-32/architecture-x86/asm/fcontext_i386_sysv_macho_gas.o" 
"../../../libs/context/src/asm/fcontext_i386_sysv_macho_gas.S" -arch i386
../../../libs/context/src/asm/fcontext_i386_sysv_macho_gas.S:87:Missing 
operand value assumed absolute 0.
../../../libs/context/src/asm/fcontext_i386_sysv_macho_gas.S:87:junk 
`[.-1b]' after expression
../../../libs/context/src/asm/fcontext_i386_sysv_macho_gas.S:113:Missing 
operand value assumed absolute 0.
../../../libs/context/src/asm/fcontext_i386_sysv_macho_gas.S:113:junk 
`[.-3b]' after expression

 From a quick google, it sounds like _GLOBAL_OFFSET_TABLE is an ELF only 
thing. I'm now way out of my depth and probably can't really help any 
further (though happy to try out any fixes).

Probably not of much relevance but:

sw_vers
ProductName:    Mac OS X
ProductVersion: 10.7.4
BuildVersion:   11E53

as -version
Apple Inc version cctools-822, GNU assembler version 1.38

I hope that is of some use! ucontext throws up a deprecated warning so 
it would be nice to switch to boost.context one day. I've not tried 
Mountain Lion yet so don't know if they've actually removed ucontext 
support or if it's still deprecated.

Best regards

Luke Elliott.