cmake-variables (7) ¶. cmake-variables (7) ¶. This page documents variables that are provided by CMake or have meaning to CMake when set by project code. For general information on variables, see the Variables section in the cmake-language manual. begin with _ followed by the name of any CMake Command.
30.07.2012 · I'd like to do a test of the form IF(${CMAKE_SYSTEM_NAME} NOT MATCHES "Linux"). This doesn't appear to work, and the only documentation I can find is a mailing-list post from 2002, which suggests the NOT isn't valid for cmake prior to 1.2. . Is this still the case in later cmake versions, specifically 2.6 and/or 2.8?
Programming in CMake Control flow. CMake has an if statement, though over the years it has become rather complex. There are a series of all caps keywords you can use inside an if statement, and you can often refer to variables by either directly by name or using the ${} syntax (the if statement historically predates variable expansion). An example if statement:
Programming in CMake Control flow. CMake has an if statement, though over the years it has become rather complex. There are a series of all caps keywords you can use inside an if statement, and you can often refer to variables by either directly by name or using the ${} syntax (the if statement historically predates variable expansion).
cmake-variables (7) ¶. cmake-variables (7) ¶. This page documents variables that are provided by CMake or have meaning to CMake when set by project code. For general information on variables, see the Variables section in the cmake-language manual. begin with _ followed by the name of any CMake 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. Note that normal variable evaluation with $ {} applies before the if command even receives the arguments. Therefore code like
May 09, 2015 · But the safer way to do it is as follows, because a variable in a string with a $ that contains the value of another variable's name will be substituted for that other variable, rather than the string.
Learn how to define variables with set and use them with the ${} operator for variable references. Learn the syntax for conditionals in CMake: if - elseif - ...
Jul 31, 2012 · I'd like to do a test of the form IF(${CMAKE_SYSTEM_NAME} NOT MATCHES "Linux"). This doesn't appear to work, and the only documentation I can find is a mailing-list post from 2002, which suggests the NOT isn't valid for cmake prior to 1.2. . Is this still the case in later cmake versions, specifically 2.6 and/or 2.8?
True if the given string or variable's value is a valid number and less than or equal to that on the right. if(<variable|string> GREATER_EQUAL <variable|string>) ...
Aug 06, 2021 · On the problem system, the try_run() code does run correctly and gives expected RUN_OUTPUT_VARIABLE value as per my code (say hello.c). To work around this I just simply ignored the runcode, and put a unique string into the run output variable so that I knew the program ran correctly.
The if command was written very early in CMake's history, predating the ${} variable evaluation syntax, and for convenience evaluates variables named by its arguments as shown in the above signatures.
If KEYWORD is a generator expression or variable that evaluates to 0 or 1, value is substituted if 1 and not if 0. You can nest generator expressions, and you ...
set(A "") set(B "A") # save name of the variable if(${B} STREQUAL "") message("Value of ${B} is an empty string") endif(). If a CMake policy CMP0054 is set ...