Hi Frank,
On Sat, 2009-10-24 at 22:37 +0200, Frank S. Thomas wrote:
> Hi Christian,
>
> On Saturday 24 October 2009 20:46:00 Christian Holm Christensen wrote:
> > On Sat, 2009-10-24 at 16:04 +0200, Frank S. Thomas wrote:
...
>
> I guess I should explain how I use Minuit2. I'm developing a C++ program with
> a Fcn class that is derived from ROOT::Minuit2::FCNBase. A method of this
> class computes some number that I want to minimize. In the simpliest form
> this
> is achieved by using the class ROOT::Minuit2::MnMinimize together with my
> Fcn,
> but I want to be able to use other minimizing strategies and to vary/fix the
> parameters of my function. The classes in the ROOT::Minuit2 namespace are of
> course all declared in the Minuit2 headers (that were included in the old
> package). So my C++ source files only #include the required Minuit2 headers,
> and nothing else from ROOT, and my program is only linked against
> libMinuit2.so, and also nothing else from ROOT. I want to use Minuit2
> directly
> in my program and don't need another abstraction layer.
In that case, that you only need Minuit2 and not the `rest' of ROOT, you
should link your program against the stand-alone version of Minuit2
available from
http://seal.web.cern.ch/seal/MathLibs/Minuit2/html/
http://seal.web.cern.ch/seal/MathLibs/Minuit2/Minuit2.tar.gz
Note, that if you link against libMinuit2.so from ROOT you _will_ pull
in a lot of ROOT stuff, just try to do
> ldd /usr/lib/root/5.24/libMinuit2.so.5.24
linux-vdso.so.1 => (0x00007fffc17ff000)
libGraf.so.5.24 => /usr/lib/libGraf.so.5.24 (0x00007fc3f5eed000)
libHist.so.5.24 => /usr/lib/libHist.so.5.24 (0x00007fc3f588e000)
libMatrix.so.5.24 => /usr/lib/libMatrix.so.5.24
(0x00007fc3f542a000)
libMathCore.so.5.24 => /usr/lib/libMathCore.so.5.24
(0x00007fc3f5036000)
libCore.so.5.24 => /usr/lib/libCore.so.5.24 (0x00007fc3f462d000)
libCint.so.5.24 => /usr/lib/libCint.so.5.24 (0x00007fc3f3a0c000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00007fc3f36fc000)
libm.so.6 => /lib/libm.so.6 (0x00007fc3f347a000)
libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00007fc3f3263000)
libc.so.6 => /lib/libc.so.6 (0x00007fc3f2f10000)
libfreetype.so.6 => /usr/lib/libfreetype.so.6
(0x00007fc3f2c89000)
libz.so.1 => /usr/lib/libz.so.1 (0x00007fc3f2a71000)
libRIO.so.5.24 => /usr/lib/libRIO.so.5.24 (0x00007fc3f26c8000)
libpcre.so.3 => /lib/libpcre.so.3 (0x00007fc3f2498000)
libcrypt.so.1 => /lib/libcrypt.so.1 (0x00007fc3f2261000)
/lib64/ld-linux-x86-64.so.2 (0x00007fc3f661b000)
> So basically I'm using Minuit2 just as a standalone library and therefore
> need
> its header files.
Then, you should truly use it as stand-alone and get the stand-alone
package :-)
Yours,
--
___ | Christian Holm Christensen
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