I'm learning C and I want to use the Umfpack library. I downloaded the package from here http://faculty.cse.tamu.edu/davis/suitesparse.html
I tried to compile using the make and make -f Makefile command, however these errors occur:
$ make -f Makefile
( cd Lib ; C:/cygwin64/bin/make )
make[1]: Entering directory 'E:/SuiteSparse/UMFPACK/Lib'
cc -O3 -fexceptions -fPIC -DNCHOLMOD -I../Include -I../Source -I../../AMD/Include -I../../SuiteSparse_config -I../../CHOLMOD/Include -DDINT -c ../Source/umf_analyze.c -o umf_i_analyze.o
GNUmakefile:104: recipe for target 'umf_i_analyze.o' failed
process_begin: CreateProcess(C:\cygwin64\bin\cc, cc -O3 -fexceptions -fPIC -DNCHOLMOD -I../Include -I../Source -I../../AMD/Include -I../../SuiteSparse_config -I../../CHOLMOD/Include -DDINT -c ../Source/umf_analyze.c -o umf_i_analyze.o, ...) failed.
make (e=5): Access is denied.
make[1]: *** [umf_i_analyze.o] Error 5
make[1]: Leaving directory 'E:/SuiteSparse/UMFPACK/Lib'
Makefile:15: recipe for target 'all' failed
make: *** [all] Error 2
I spent a long time searching on google for the solution, but I couldn't find any. Could someone help me with this please. Thanks.
did you read these instructions in the sub directory UMFPACK in the README file?
Quick start (Unix, or Windows with Cygwin):
To compile, test, and install both UMFPACK and AMD, the UMFPACK and AMD
directories must be in the same parent directory. To configure, edit the
SuiteSparse_config/SuiteSparse_config.mk file (otherwise, you may get
warnings that the BLAS (dgemm, etc) are not found). You may use
UMFPACK_CONFIG = -DNBLAS in the SuiteSparse_config/SuiteSparse_config.mk
file, to avoid using the BLAS, but UMFPACK will be slow. Next, cd to this
directory (UMFPACK) and type "make". To compile and run a FORTRAN demo
program for Harwell/Boeing matrices, type "make hb". To compile a FORTRAN
main program that calls the 32-bit C-callable UMFPACK library, type "make
fortran". When done, type "make clean" to remove unused *.o files (keeps
the compiled libraries and demo programs). See the User Guide
(Doc/UserGuide.pdf), or ../SuiteSparse_config/SuiteSparse_config.mk for
more details (including options for compiling in 64-bit mode).
did you follow those instructions?
Did you notice, that the makefile does not ever call anything in a E:\ drive?