Yesterday it ran. Today "permission denied" even as root

[fopetesl]

SPI_check.c

Code: Select all

gcc -Wall -c -o SPIck SPI_Check.c -l bcm2835

No errors.
Same yesterday except yesterday it ran. No code change.
Today ./SPIck "permission denied" even as pi user, sudo or as root.

However. If I

Code: Select all

gcc SPI_Check.c -l bcm2835
./a.out

I get no errors and it runs
So If I look at mode I see that a.out is executable but SPIck isn't.
So it's my gcc switches?

[topguy]

An if you do:

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chmod u+x SPIck

to make it executable ?

[fopetesl]

Did that and chown'd.
Still permission denied.
Now I cannot alter or delete the file, says cannot be found

[RaTTuS]

ls -la

[SteveSpencer]

There are a number of possible avenues to explore.

First, unless you alter your PATH to include the current folder, you have to prefix the executable with ./, such as
./SPIck

Secondly, in the first version of your compile command line, you use both -c and -o. This leaves you with an unlinked object file (that is, ld has not been run) named SPIck.

Remove the -c flag and retry.

[fopetesl]

There are a number of possible avenues to explore.
First, unless you alter your PATH to include the current folder, you have to prefix the executable with ./, such as
./SPIck

Did that. See original post, please.

Secondly, in the first version of your compile command line, you use both -c and -o. This leaves you with an unlinked object file (that is, ld has not been run) named SPIck.
Remove the -c flag and retry.

Got it! Sorted Thank you.