Mixing
Error in linking gfortran to LAPACK and BLAS
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I have installed LAPACK and BLAS from Synaptic package manager in Ubuntu.
whereis libblas
libblas: /usr/lib/libblas.so /usr/lib/libblas.a /usr/lib/libblas
whereis liblapack
liblapack: /usr/lib/liblapack.a /usr/lib/liblapack.so
When I try to compile the randomsys1 example with gfortran I get the following error messages.
gfortran randomsys1.f90 -L/usr/lib/lapack -llapack -L/usr/lib/libblas -lblas
/tmp/cclwtifh.o: In function `MAIN__':
randomsys1.f90:(.text+0x12): undefined reference to `init_random_seed_'
collect2: error: ld returned 1 exit status
or
gfortran randomsys1.f90 -llapack -lblas
/tmp/ccB1isEC.o: In function `MAIN__':
randomsys1.f90:(.text+0x12): undefined reference to `init_random_seed_'
collect2: error: ld returned 1 exit status
As per my understanding, it is the recommended way to link gfortran with lapack and blas (kindly refer to gfortran LAPACK “undefined reference” error). Thanks in advance for pointing out the correct way to compile the fortran code using gfortran.
fortran gfortran lapack blas
edited May 23 '17 at 12:23
Community♦
11
asked Jan 26 '16 at 4:21
Rajarshi
32
add a comment |
up vote
0
down vote
favorite
I have installed LAPACK and BLAS from Synaptic package manager in Ubuntu.
whereis libblas
libblas: /usr/lib/libblas.so /usr/lib/libblas.a /usr/lib/libblas
whereis liblapack
liblapack: /usr/lib/liblapack.a /usr/lib/liblapack.so
When I try to compile the randomsys1 example with gfortran I get the following error messages.
gfortran randomsys1.f90 -L/usr/lib/lapack -llapack -L/usr/lib/libblas -lblas
/tmp/cclwtifh.o: In function `MAIN__':
randomsys1.f90:(.text+0x12): undefined reference to `init_random_seed_'
collect2: error: ld returned 1 exit status
or
gfortran randomsys1.f90 -llapack -lblas
/tmp/ccB1isEC.o: In function `MAIN__':
randomsys1.f90:(.text+0x12): undefined reference to `init_random_seed_'
collect2: error: ld returned 1 exit status
As per my understanding, it is the recommended way to link gfortran with lapack and blas (kindly refer to gfortran LAPACK “undefined reference” error). Thanks in advance for pointing out the correct way to compile the fortran code using gfortran.
fortran gfortran lapack blas
edited May 23 '17 at 12:23
Community♦
11
asked Jan 26 '16 at 4:21
Rajarshi
32
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I have installed LAPACK and BLAS from Synaptic package manager in Ubuntu.
whereis libblas
libblas: /usr/lib/libblas.so /usr/lib/libblas.a /usr/lib/libblas
whereis liblapack
liblapack: /usr/lib/liblapack.a /usr/lib/liblapack.so
When I try to compile the randomsys1 example with gfortran I get the following error messages.
gfortran randomsys1.f90 -L/usr/lib/lapack -llapack -L/usr/lib/libblas -lblas
/tmp/cclwtifh.o: In function `MAIN__':
randomsys1.f90:(.text+0x12): undefined reference to `init_random_seed_'
collect2: error: ld returned 1 exit status
or
gfortran randomsys1.f90 -llapack -lblas
/tmp/ccB1isEC.o: In function `MAIN__':
randomsys1.f90:(.text+0x12): undefined reference to `init_random_seed_'
collect2: error: ld returned 1 exit status
As per my understanding, it is the recommended way to link gfortran with lapack and blas (kindly refer to gfortran LAPACK “undefined reference” error). Thanks in advance for pointing out the correct way to compile the fortran code using gfortran.
fortran gfortran lapack blas
edited May 23 '17 at 12:23
Community♦
11
asked Jan 26 '16 at 4:21
Rajarshi
32
I have installed LAPACK and BLAS from Synaptic package manager in Ubuntu.
whereis libblas
libblas: /usr/lib/libblas.so /usr/lib/libblas.a /usr/lib/libblas
whereis liblapack
liblapack: /usr/lib/liblapack.a /usr/lib/liblapack.so
When I try to compile the randomsys1 example with gfortran I get the following error messages.
gfortran randomsys1.f90 -L/usr/lib/lapack -llapack -L/usr/lib/libblas -lblas
/tmp/cclwtifh.o: In function `MAIN__':
randomsys1.f90:(.text+0x12): undefined reference to `init_random_seed_'
collect2: error: ld returned 1 exit status
or
gfortran randomsys1.f90 -llapack -lblas
/tmp/ccB1isEC.o: In function `MAIN__':
randomsys1.f90:(.text+0x12): undefined reference to `init_random_seed_'
collect2: error: ld returned 1 exit status
As per my understanding, it is the recommended way to link gfortran with lapack and blas (kindly refer to gfortran LAPACK “undefined reference” error). Thanks in advance for pointing out the correct way to compile the fortran code using gfortran.
fortran gfortran lapack blas
fortran gfortran lapack blas
edited May 23 '17 at 12:23
Community♦
11
asked Jan 26 '16 at 4:21
Rajarshi
32
edited May 23 '17 at 12:23
Community♦
11
asked Jan 26 '16 at 4:21
Rajarshi
32
edited May 23 '17 at 12:23
Community♦
11
edited May 23 '17 at 12:23
Community♦
11
edited May 23 '17 at 12:23
Community♦
11
11
asked Jan 26 '16 at 4:21
Rajarshi
32
asked Jan 26 '16 at 4:21
Rajarshi
32
asked Jan 26 '16 at 4:21
Rajarshi
32
32
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
up vote
1
down vote
accepted
Give this a try
gfortran randomsys1.f90 -L/usr/lib -llapack -L/usr/lib -lblas
I think you went one directory too far
I wrote a program using the LAPACK eigensolver and here is how I successfully compiled it on my own computer. It was used to calculate modes of a spring-mass system.
gfortran eigen.f90 -L/usr/local/lib -lblas -L/usr/local/lib -llapack
This also works on my computer
gfortran eigen.f90 -lblas -llapack
I just tried both to verify.
PS, now that you know how to compile, I think you need the subroutine init_random_seed in your program (goes after "contains" but before "end program"). This one is from google. No idea if it is what you need, your professor should be able to steer you correctly here.
! Initialize the random number generator using current time,
! so a new sequence of random numbers is generated each
! execution time.
! Taken from http://gcc.gnu.org/onlinedocs/gfortran/RANDOM_005fSEED.html
SUBROUTINE init_random_seed()
INTEGER :: i, n, clock
INTEGER, DIMENSION(:), ALLOCATABLE :: seed
CALL RANDOM_SEED(size = n)
ALLOCATE(seed(n))
CALL SYSTEM_CLOCK(COUNT=clock)
seed = clock + 37 * (/ (i - 1, i = 1, n) /)
CALL RANDOM_SEED(PUT = seed)
print *, "Using random seed = ", seed
print *, " "
DEALLOCATE(seed)
END SUBROUTINE
answered Jan 26 '16 at 5:01
Mark S
1468
Thank you so much! You have rightly pointed out thatinit_random_seedsubroutine was missing. After including the subroutine you provided, I could compile it with the commandgfortran randomsys1.f90 -lblas -llapack.
– Rajarshi
Jan 26 '16 at 16:42
The code does not seem to match what is now in gcc.gnu.org/onlinedocs/gfortran/RANDOM_005fSEED.html, maybe there has been an update?
– J.J. Hakala
Jan 26 '16 at 17:15
@Rajarshi, can you officially accept my answer (top left of answer)? I am on a mission for more points!
– Mark S
Jan 26 '16 at 20:27
@MarkS, sure. I have done it.
– Rajarshi
Jan 28 '16 at 3:53
add a comment |
up vote
0
down vote
I had the same problem. I followed the recommendation above and
it worked. Here's my working example batch file (it has to be executed
in the cmd window):
gfortran -c forkurs_evd.f90
gfortran -o kurs_evd.exe kurs_evd.o charint.o -L/usr/lib -llapack -L/usr/lib -lblas
kurs_evd.exe
edited yesterday
Lorelorelore
1,36811122
answered yesterday
Peter Dr. Strobach
1
New contributor
Peter Dr. Strobach is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
1
down vote
accepted
Give this a try
gfortran randomsys1.f90 -L/usr/lib -llapack -L/usr/lib -lblas
I think you went one directory too far
I wrote a program using the LAPACK eigensolver and here is how I successfully compiled it on my own computer. It was used to calculate modes of a spring-mass system.
gfortran eigen.f90 -L/usr/local/lib -lblas -L/usr/local/lib -llapack
This also works on my computer
gfortran eigen.f90 -lblas -llapack
I just tried both to verify.
PS, now that you know how to compile, I think you need the subroutine init_random_seed in your program (goes after "contains" but before "end program"). This one is from google. No idea if it is what you need, your professor should be able to steer you correctly here.
! Initialize the random number generator using current time,
! so a new sequence of random numbers is generated each
! execution time.
! Taken from http://gcc.gnu.org/onlinedocs/gfortran/RANDOM_005fSEED.html
SUBROUTINE init_random_seed()
INTEGER :: i, n, clock
INTEGER, DIMENSION(:), ALLOCATABLE :: seed
CALL RANDOM_SEED(size = n)
ALLOCATE(seed(n))
CALL SYSTEM_CLOCK(COUNT=clock)
seed = clock + 37 * (/ (i - 1, i = 1, n) /)
CALL RANDOM_SEED(PUT = seed)
print *, "Using random seed = ", seed
print *, " "
DEALLOCATE(seed)
END SUBROUTINE
answered Jan 26 '16 at 5:01
Mark S
1468
Thank you so much! You have rightly pointed out thatinit_random_seedsubroutine was missing. After including the subroutine you provided, I could compile it with the commandgfortran randomsys1.f90 -lblas -llapack.
– Rajarshi
Jan 26 '16 at 16:42
The code does not seem to match what is now in gcc.gnu.org/onlinedocs/gfortran/RANDOM_005fSEED.html, maybe there has been an update?
– J.J. Hakala
Jan 26 '16 at 17:15
@Rajarshi, can you officially accept my answer (top left of answer)? I am on a mission for more points!
– Mark S
Jan 26 '16 at 20:27
@MarkS, sure. I have done it.
– Rajarshi
Jan 28 '16 at 3:53
add a comment |
up vote
1
down vote
accepted
Give this a try
gfortran randomsys1.f90 -L/usr/lib -llapack -L/usr/lib -lblas
I think you went one directory too far
I wrote a program using the LAPACK eigensolver and here is how I successfully compiled it on my own computer. It was used to calculate modes of a spring-mass system.
gfortran eigen.f90 -L/usr/local/lib -lblas -L/usr/local/lib -llapack
This also works on my computer
gfortran eigen.f90 -lblas -llapack
I just tried both to verify.
PS, now that you know how to compile, I think you need the subroutine init_random_seed in your program (goes after "contains" but before "end program"). This one is from google. No idea if it is what you need, your professor should be able to steer you correctly here.
! Initialize the random number generator using current time,
! so a new sequence of random numbers is generated each
! execution time.
! Taken from http://gcc.gnu.org/onlinedocs/gfortran/RANDOM_005fSEED.html
SUBROUTINE init_random_seed()
INTEGER :: i, n, clock
INTEGER, DIMENSION(:), ALLOCATABLE :: seed
CALL RANDOM_SEED(size = n)
ALLOCATE(seed(n))
CALL SYSTEM_CLOCK(COUNT=clock)
seed = clock + 37 * (/ (i - 1, i = 1, n) /)
CALL RANDOM_SEED(PUT = seed)
print *, "Using random seed = ", seed
print *, " "
DEALLOCATE(seed)
END SUBROUTINE
answered Jan 26 '16 at 5:01
Mark S
1468
Thank you so much! You have rightly pointed out thatinit_random_seedsubroutine was missing. After including the subroutine you provided, I could compile it with the commandgfortran randomsys1.f90 -lblas -llapack.
– Rajarshi
Jan 26 '16 at 16:42
The code does not seem to match what is now in gcc.gnu.org/onlinedocs/gfortran/RANDOM_005fSEED.html, maybe there has been an update?
– J.J. Hakala
Jan 26 '16 at 17:15
@Rajarshi, can you officially accept my answer (top left of answer)? I am on a mission for more points!
– Mark S
Jan 26 '16 at 20:27
@MarkS, sure. I have done it.
– Rajarshi
Jan 28 '16 at 3:53
add a comment |
up vote
1
down vote
accepted
up vote
1
down vote
accepted
Give this a try
gfortran randomsys1.f90 -L/usr/lib -llapack -L/usr/lib -lblas
I think you went one directory too far
I wrote a program using the LAPACK eigensolver and here is how I successfully compiled it on my own computer. It was used to calculate modes of a spring-mass system.
gfortran eigen.f90 -L/usr/local/lib -lblas -L/usr/local/lib -llapack
This also works on my computer
gfortran eigen.f90 -lblas -llapack
I just tried both to verify.
PS, now that you know how to compile, I think you need the subroutine init_random_seed in your program (goes after "contains" but before "end program"). This one is from google. No idea if it is what you need, your professor should be able to steer you correctly here.
! Initialize the random number generator using current time,
! so a new sequence of random numbers is generated each
! execution time.
! Taken from http://gcc.gnu.org/onlinedocs/gfortran/RANDOM_005fSEED.html
SUBROUTINE init_random_seed()
INTEGER :: i, n, clock
INTEGER, DIMENSION(:), ALLOCATABLE :: seed
CALL RANDOM_SEED(size = n)
ALLOCATE(seed(n))
CALL SYSTEM_CLOCK(COUNT=clock)
seed = clock + 37 * (/ (i - 1, i = 1, n) /)
CALL RANDOM_SEED(PUT = seed)
print *, "Using random seed = ", seed
print *, " "
DEALLOCATE(seed)
END SUBROUTINE
answered Jan 26 '16 at 5:01
Mark S
1468
Give this a try
gfortran randomsys1.f90 -L/usr/lib -llapack -L/usr/lib -lblas
I think you went one directory too far
I wrote a program using the LAPACK eigensolver and here is how I successfully compiled it on my own computer. It was used to calculate modes of a spring-mass system.
gfortran eigen.f90 -L/usr/local/lib -lblas -L/usr/local/lib -llapack
This also works on my computer
gfortran eigen.f90 -lblas -llapack
I just tried both to verify.
PS, now that you know how to compile, I think you need the subroutine init_random_seed in your program (goes after "contains" but before "end program"). This one is from google. No idea if it is what you need, your professor should be able to steer you correctly here.
! Initialize the random number generator using current time,
! so a new sequence of random numbers is generated each
! execution time.
! Taken from http://gcc.gnu.org/onlinedocs/gfortran/RANDOM_005fSEED.html
SUBROUTINE init_random_seed()
INTEGER :: i, n, clock
INTEGER, DIMENSION(:), ALLOCATABLE :: seed
CALL RANDOM_SEED(size = n)
ALLOCATE(seed(n))
CALL SYSTEM_CLOCK(COUNT=clock)
seed = clock + 37 * (/ (i - 1, i = 1, n) /)
CALL RANDOM_SEED(PUT = seed)
print *, "Using random seed = ", seed
print *, " "
DEALLOCATE(seed)
END SUBROUTINE
answered Jan 26 '16 at 5:01
Mark S
1468
edited Jan 26 '16 at 5:29
answered Jan 26 '16 at 5:01
Mark S
1468
answered Jan 26 '16 at 5:01
Mark S
1468
answered Jan 26 '16 at 5:01
Mark S
1468
1468
Thank you so much! You have rightly pointed out thatinit_random_seedsubroutine was missing. After including the subroutine you provided, I could compile it with the commandgfortran randomsys1.f90 -lblas -llapack.
– Rajarshi
Jan 26 '16 at 16:42
The code does not seem to match what is now in gcc.gnu.org/onlinedocs/gfortran/RANDOM_005fSEED.html, maybe there has been an update?
– J.J. Hakala
Jan 26 '16 at 17:15
@Rajarshi, can you officially accept my answer (top left of answer)? I am on a mission for more points!
– Mark S
Jan 26 '16 at 20:27
@MarkS, sure. I have done it.
– Rajarshi
Jan 28 '16 at 3:53
add a comment |
Thank you so much! You have rightly pointed out thatinit_random_seedsubroutine was missing. After including the subroutine you provided, I could compile it with the commandgfortran randomsys1.f90 -lblas -llapack.
– Rajarshi
Jan 26 '16 at 16:42
The code does not seem to match what is now in gcc.gnu.org/onlinedocs/gfortran/RANDOM_005fSEED.html, maybe there has been an update?
– J.J. Hakala
Jan 26 '16 at 17:15
@Rajarshi, can you officially accept my answer (top left of answer)? I am on a mission for more points!
– Mark S
Jan 26 '16 at 20:27
@MarkS, sure. I have done it.
– Rajarshi
Jan 28 '16 at 3:53
Thank you so much! You have rightly pointed out that
init_random_seed subroutine was missing. After including the subroutine you provided, I could compile it with the command gfortran randomsys1.f90 -lblas -llapack.– Rajarshi
Jan 26 '16 at 16:42
Thank you so much! You have rightly pointed out that
init_random_seed subroutine was missing. After including the subroutine you provided, I could compile it with the command gfortran randomsys1.f90 -lblas -llapack.– Rajarshi
Jan 26 '16 at 16:42
The code does not seem to match what is now in gcc.gnu.org/onlinedocs/gfortran/RANDOM_005fSEED.html, maybe there has been an update?
– J.J. Hakala
Jan 26 '16 at 17:15
The code does not seem to match what is now in gcc.gnu.org/onlinedocs/gfortran/RANDOM_005fSEED.html, maybe there has been an update?
– J.J. Hakala
Jan 26 '16 at 17:15
@Rajarshi, can you officially accept my answer (top left of answer)? I am on a mission for more points!
– Mark S
Jan 26 '16 at 20:27
@Rajarshi, can you officially accept my answer (top left of answer)? I am on a mission for more points!
– Mark S
Jan 26 '16 at 20:27
@MarkS, sure. I have done it.
– Rajarshi
Jan 28 '16 at 3:53
@MarkS, sure. I have done it.
– Rajarshi
Jan 28 '16 at 3:53
add a comment |
up vote
0
down vote
I had the same problem. I followed the recommendation above and
it worked. Here's my working example batch file (it has to be executed
in the cmd window):
gfortran -c forkurs_evd.f90
gfortran -o kurs_evd.exe kurs_evd.o charint.o -L/usr/lib -llapack -L/usr/lib -lblas
kurs_evd.exe
edited yesterday
Lorelorelore
1,36811122
answered yesterday
Peter Dr. Strobach
1
New contributor
Peter Dr. Strobach is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
up vote
0
down vote
I had the same problem. I followed the recommendation above and
it worked. Here's my working example batch file (it has to be executed
in the cmd window):
gfortran -c forkurs_evd.f90
gfortran -o kurs_evd.exe kurs_evd.o charint.o -L/usr/lib -llapack -L/usr/lib -lblas
kurs_evd.exe
edited yesterday
Lorelorelore
1,36811122
answered yesterday
Peter Dr. Strobach
1
New contributor
Peter Dr. Strobach is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
up vote
0
down vote
up vote
0
down vote
I had the same problem. I followed the recommendation above and
it worked. Here's my working example batch file (it has to be executed
in the cmd window):
gfortran -c forkurs_evd.f90
gfortran -o kurs_evd.exe kurs_evd.o charint.o -L/usr/lib -llapack -L/usr/lib -lblas
kurs_evd.exe
edited yesterday
Lorelorelore
1,36811122
answered yesterday
Peter Dr. Strobach
1
New contributor
Peter Dr. Strobach is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I had the same problem. I followed the recommendation above and
it worked. Here's my working example batch file (it has to be executed
in the cmd window):
gfortran -c forkurs_evd.f90
gfortran -o kurs_evd.exe kurs_evd.o charint.o -L/usr/lib -llapack -L/usr/lib -lblas
kurs_evd.exe
edited yesterday
Lorelorelore
1,36811122
answered yesterday
Peter Dr. Strobach
1
New contributor
Peter Dr. Strobach is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited yesterday
Lorelorelore
1,36811122
edited yesterday
Lorelorelore
1,36811122
edited yesterday
Lorelorelore
1,36811122
1,36811122
answered yesterday
Peter Dr. Strobach
1
New contributor
Peter Dr. Strobach is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered yesterday
Peter Dr. Strobach
1
answered yesterday
Peter Dr. Strobach
1
1
New contributor
Peter Dr. Strobach is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Peter Dr. Strobach is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Peter Dr. Strobach is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
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