[Coin-discuss] Build failure from current CVS source on SuSE 9.1 AMD64 platform with fix

[Laszlo Ladanyi]

Hi Clint,

I have modified the makefile and put k8 there (if the arch is x86_64), but
that is still not perfect, since k8 is available only from g++-3.4 and up. I'm
not sure what's the best solution since at that point the version of g++
is not known. I suppose one could do a $(shell g++ -v) and parse the
result... Any other suggestion?

--Laci


On Wed, 12 Jan 2005, Clint wrote:

> The default CVS checkout of the Cbc (and dependent) modules fails to
> compile on SuSE 9.1 AMD64 platform.  I checked out the source for the
> Cbc module via cvs and make failed with the following errors:
> 
> cc1plus: error: bad value (x86_64) for -march= switch
> 
> I traced this down to COIN/Makefiles/Makefile.linux, where 
> 
> ARCH=$(shell arch)
> 
> is passed on to 
> 
> CXXFLAGS += -march=$(ARCH)
> 
> On the AMD64 platform, ARCH=x86_64, however this is not a correct
> argument to -march in GCC.  I hardcoded
> 
> ARCH=k8
> 
> into Makefile.linux and make proceeded normally.  This is obviously
> not a permanent fix, but I just wanted to report the bug.
> 
> - clint
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