Hello.
I'm trying to get GSL 1.8 setup to run on a PowerPC single board
computer and have not been able to get configure to create either usable
Makefiles or Makefiles that create PowerPC object files. I've reviewed
the GNU Standards file that describes configure (Chapter 7.1) but still
have questions.
First, some background. I need to build the GSL to run on a single
board computer from Mercury Computer Systems. The processor is a
PowerPC 750. It runs an OS called "MCOS". The OS and hardware are a
good ten years old. My development host has a SPARC processor and runs
Solaris 2.7. This is where the cross-compiler and related tools are
installed.
Question 1.
The configure script takes 3 arguments that appear to be relevant:
"--build", "--host", and "--target". Although the GNU Standards file
talks about them, I'm still unclear as to which ones I should use.
Could someone please explain the differences between them. I have tried:
--build=sparc-sun-solaris2.7
--host=sparc-sun-solaris2.7
--target=ppc-ibm-mcos
Forgive me for not being precise about what goes wrong, I don't have
notes in front of me. But, as I recall, if I specify all 3, configure
complains and if I remove "--build", the Makefiles build Solaris object
files using gcc. I ran out of time on Friday so could not try other
combinations.
Question 2.
What are these .lo and .la files created by the Makefiles? The reason I
ask is that my Makefiles contain make variables whose values are of the form
strdup.oppc$U.oppc
I know something of sed and make and shells but could not fathom what
the "$U" is supposed to be or why the file extension is replicated.
Question 3.
What does "libtool" do?
Explanations, links to explanations, advice, etc will be appreciated.
Thanks in advance.
Mike
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