How to manually set a CMake path variable to NOTFOUND?

Question

I'm hardcoding a library path before hand and want to set the path to NOTFOUND manually if the file doesn't exist.

set(MY_LIB "path that doesn't exist")
if(NOT EXISTS "${MY_LIB}")
 message("not found")
 // set it back to NOTFOUND ??
endif()
if (MY_LIB)
 // set flags
endif()

I do not understand. "Serve" how? How exactly? In which "conditional"? Is a "conditional" in your question an `if` statement? — KamilCuk, Sep 06 '20 at 08:38
Edited the question. conditional means the second if statement in the code. — puio, Sep 06 '20 at 08:40
Read [if cmake manual](https://cmake.org/cmake/help/latest/command/if.html) and you'll find the answer — KamilCuk, Sep 06 '20 at 08:40

score 2 · Accepted Answer · answered Sep 06 '20 at 08:41

2

How to manually set a CMake path variable to NOTFOUND?

Just set it to the string:

set(MY_LIB "NOTFOUND")

answered Sep 06 '20 at 08:41

KamilCuk

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How to manually set a CMake path variable to NOTFOUND?

1 Answers1