Tip to compile a 32bit version of Ruby on Snow Leopard

Hi guys,

I hope it’s not too off topic on a Rails forum, but I spent so much
time on this I thought I should share it here - hopefully it will help
other people.

I had to compile a 32bit (i386) version of Ruby 1.8.7 on Snow Leopard
(my app is using a 32bit only lib). So I configured the compilation as
such:
./configure CFLAGS="-arch i386 -D_XOPEN_SOURCE=1" LDFLAGS="-arch i386"
–enable-shared --enable-pthread

It seems to me that’s the standard way to do this… but it doesn’t
work. Indeed, the “-arch i386” param is not passed to a cc call during
the compilation (the compilation fails since it uses a 64bit version
of a lib, instead of the 32 one).

I manually updated the Makefile (after executing ./configure with the
params above):

LDSHARED = cc -arch i386 -dynamiclib -undefined suppress -
flat_namespace

(adding -arch i386)

and the compilation worked fine.

Thanks,
Pierre

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