Difference between revisions of "Category:How to - Fortran"
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(Created page with "GCC contains gfortran as part of it(usually) but the library does not get pulled in. or you can install gfortran separately. To ensure its installed (or include the packages in ...") |
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or you can install gfortran separately. | or you can install gfortran separately. | ||
| − | To ensure its installed | + | To ensure its installed |
opkg update | opkg update | ||
| Line 10: | Line 10: | ||
opkg install libgfortran-dev | opkg install libgfortran-dev | ||
| − | Then | + | (or add the packages to your image recipe) |
| + | |||
| + | Then write a program to test its installed | ||
vim hello.f90 | vim hello.f90 | ||
| Line 31: | Line 33: | ||
Hello Fortran World! | Hello Fortran World! | ||
| + | |||
| + | user@overo:~# | ||
| + | |||
| + | program to do a system call | ||
| + | |||
| + | vim utime.f90 | ||
| + | |||
| + | |||
| + | ! utime.f90 | ||
| + | ! program to do a system call to uptime | ||
| + | program utime | ||
| + | implicit none | ||
| + | character(6) :: command | ||
| + | command = 'uptime' | ||
| + | print*, " " | ||
| + | call system(command) | ||
| + | print*, " " | ||
| + | end | ||
| + | |||
| + | user@overo:~# gfortran -o utime utime.f90 | ||
| + | user@overo:~# ./utime | ||
| + | |||
| + | 11:06:43 up 7 days, 23:03, 2 users, load average: 0.00, 0.00, 0.00 | ||
user@overo:~# | user@overo:~# | ||
Latest revision as of 22:37, 13 July 2011
GCC contains gfortran as part of it(usually) but the library does not get pulled in. or you can install gfortran separately.
To ensure its installed
opkg update opkg install gfortran opkg install gfortran-symlinks opkg install libgfortran opkg install libgfortran-dev
(or add the packages to your image recipe)
Then write a program to test its installed
vim hello.f90
! hello.f90 program hello implicit none print*, " " print*, "Hello World!" print*, " " end
To compile
user@overo:~# gfortran -o hellof hello.f90
to run
user@overo:~# ./hellof Hello Fortran World! user@overo:~#
program to do a system call
vim utime.f90
! utime.f90 ! program to do a system call to uptime program utime implicit none character(6) :: command command = 'uptime' print*, " " call system(command) print*, " " end
user@overo:~# gfortran -o utime utime.f90 user@overo:~# ./utime 11:06:43 up 7 days, 23:03, 2 users, load average: 0.00, 0.00, 0.00 user@overo:~#
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