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Editorial Team
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Asked: 2026-06-17T16:10:14+00:00

I recently downloaded the graclus software. While trying to install it I had to

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I recently downloaded the graclus software. While trying to install it I had to be complete the makefile.in with some options.I figured out other options but I couldn’t find what do we write for the LDOPTIONS.

Can anybody help me out in figuring what do I fill in the options used by the compiler?
Help will be truly appreciated.

//Here is the makefile.in

# Which compiler to use
CC = g++

# What optimization level to use
OPTFLAGS = -O2 -fPIC

# What options to be used by the compiler
COPTIONS = -DNUMBITS=32

# What options to be used by the loader
LDOPTIONS =

# What archiving to use 
AR = ar rv

# What to use for indexing the archive
RANLIB = ranlib

ARCH = P4SSE2

LAPACK = -llapack_$(ARCH)

ARPACK = -lcarpack_$(ARCH)

ATLAS  = -latlas_$(ARCH)

CBLAS  = -lcblaswr -lcblas -lblas -lmyf2c

GSL = -lgslcblas -lgsl

SPARSE = -lsparse

UTIL = -lmyutil
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1 Answer

  1. Editorial Team

    Since the Makefile you provided is just an excerpt and you’ve not mentioned what package or library you’re compiling it with, I’m just making a wild-guess here.

    LDOPTIONS could serve a similar puprose as the commonly used variable LDFLAGS which provides a way to specify extra flags to the linker. It depends on the linker you use. If you’re using gcc, then you can run man ld to see the list of linker options.

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