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CMake compare to empty string with STREQUAL failed. You ran into a rather annoying "it's not a bug, it's a feature" behavior of CMake. As explained in the documentation of the if command: The if command was written very early in CMake's history, predating the $ {} variable evaluation syntax, and for convenience evaluates variables named by its ...

CMake version: 3.1.0 Quoted test OK Unquoted test Surprise! 解决方案. CMake compare to empty string with STREQUAL failed ...

You ran into a rather annoying "it's not a bug, it's a feature" behavior of CMake. As explained in the documentation of the if command:. The if command was written very early in CMake's history, predating the ${} variable evaluation syntax, and for convenience evaluates variables named by its arguments as shown in the above signatures.

And then this still tells me "test" is not the empty string. Which can be considered expected behaviour if an empty variable is not the empty string, but both are "NOT test".

Previous message: [CMake] Checking for empty string; Next message: [CMake] Checking for ... how do I test if a string is empty ("") or not ?

CMake compare to empty string with STREQUAL failed. Ask Question Asked 8 years, 4 months ago. ... If the variable d happens to be defined to the empty string, ...

If the variable d happens to be defined to the empty string, the message statement will print "oops...", e.g.:

set(A "") set(B "A") # save name of the variable if(${B} STREQUAL "") message("Value of ${B} is an empty string") endif(). If a CMake policy CMP0054 is set ...

CMake compare to empty string with STREQUAL failed (1). You ran into a rather annoying "it's not a bug, it's a feature" behavior of CMake.

False if the constant is 0 , OFF , NO , FALSE , N , IGNORE , NOTFOUND , the empty string, or ends in the suffix -NOTFOUND . Named boolean constants are ...

25.10.2011 · [CMake] Checking for empty string David Cole david.cole at kitware.com Tue Oct 25 09:04:08 EDT 2011. Previous message: [CMake] Checking for empty string Next message: [CMake] Checking for empty string Messages sorted by: On Tue, Oct 25, 2011 at 6:31 AM, Rolf ...

List: cmake Subject: Re: [CMake] Checking for empty string From: David Cole ... written before we even had ${test} variable expansion in the CMake language.

Opening from comment in issue #1815: Another related issue here is that cache entries which are just an empty string also don't get created, ...

Write a string representation of the current date and/or time to the <output_variable>. If the command is unable to obtain a timestamp, the <output_variable> will be set to the empty string "". The optional UTC flag requests the current date/time representation to be in Coordinated Universal Time (UTC) rather than local time.

23.03.2022 · As the title says, setting CMAKE_C(XX)_FLAGS_DEBUG to the empty string “” in a CMakePresets.json, even if architecture is specified to ‘external’ and x64, will make compile for x32. Is this intended behaviour? Something…

Oct 25, 2011 · [CMake] Checking for empty string David Cole david.cole at kitware.com Tue Oct 25 09:04:08 EDT 2011. Previous message: [CMake] Checking for empty string Next message: [CMake] Checking for empty string Messages sorted by:

hi there, > > how do I test if a string is empty ("") or not ? > IF( ${test} STREQUAL "" ) > gives the wrong number of arguments if ${test} ...

False if the constant is 0, OFF, NO, FALSE, N, IGNORE, NOTFOUND, the empty string, or ends in the suffix -NOTFOUND. Named boolean constants are case-insensitive. If the argument is not one of these specific constants, it is treated as a variable or string (see Variable Expansion further below) and one of the following two forms applies. if ...

28.06.2021 · Looks like ENABLE_LIBCXX interpreted as string, not as a variable name (even being unquoted)… ???

CMake version 3.10, Ubuntu 18, but I think it is version independent. if we set a variable TEMP_VAR to empty string ("") both conditions ...

And then this still tells me "test" is not the empty string. Which can be considered expected behaviour if an empty variable is not the empty string, but both are "NOT test".