Re: [Plplot-devel] Checkpoint 4 for the new CMake build system

[Alan W. I. <ir...@be...>]

On 2006-07-26 22:27-0400 hba...@ma... wrote:

>
> On Jul 26, 2006, at 10:12 PM, Hazen Babcock wrote:
>
>> 
>> I used to see an error like this (meaning the message about -multi_module) 
>> when I would try to compile with Fortran, and I could make it go away 
>> with:
>> 
>> make FFLAGS="-Wl,-single_module" FCFLAGS="-Wl,-single_module"
>> 
>> However, disabling Fortran with ccmake doesn't resolve this. I guess the 
>> "multi_module" / OS-X linker problem has propagated into the C part of the 
>> build.
>
> Figured it out :).

Excellent.

> In the ccmake advanced menu you can set 
> CMAKE_SHARED_LINKER_FLAGS to "-single_module" and compile PLplot on OS-X. If 
> you don't get to it first, I will try and figure out how to make cmake do 
> that automatically for OS-X deployment.

Try the following in the top-level CMakeLists.txt file.

if(APPLE)
   set(CMAKE_SHARED_LINKER_FLAGS "-single_module" CACHE INTERNAL "")
endif(APPLE)

CACHE INTERNAL always overrides the cached value which I believe is probably
what you want.

Note, there are related variables to change for other situations (for
various kinds of builds [debug, optimized for release, etc.], and for
modules as well).  Also, there appears to be a duplicate advanced set. Have
a look at CMakeCache.txt to see all the combinations.

I will post a question to the cmake list on which of these combinations you
have to set.

>
> It really is a lot faster. Nice work you guys!

You're welcome, and thanks for saying so.  I am really pleased that
checkpoint 4.1 worked for you on Mac OS X with just this one minor change.

Alan
__________________________
Alan W. Irwin

Astronomical research affiliation with Department of Physics and Astronomy,
University of Victoria (astrowww.phys.uvic.ca).

Programming affiliations with the FreeEOS equation-of-state implementation
for stellar interiors (freeeos.sf.net); PLplot scientific plotting software
package (plplot.org); the Yorick front-end to PLplot (yplot.sf.net); the
Loads of Linux Links project (loll.sf.net); and the Linux Brochure Project
(lbproject.sf.net).
__________________________

Linux-powered Science
__________________________