"if" statement in "$PESC_DIR\bmake\common\rules" makefile

[Sumit Vaidya]

Hi,

 

I would like to understand the rules makefile. What are these various
options '-d', '-o', '-f' used in "if" statement.

For example in "tree" target, the first command is 

"@if [ "$(DIRS)" != "" -o -d "ftn-auto" -o -d "ftn-custom" -o -d
"f90-custom" ];"

 

I would like to understand the meaning of this. What is the significance of
-o -d option in "if" statement.

Can you point me to some link where I will get the information about this?

 

Waiting for your reply,

Sumit


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