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If you change the default value in the CMakeLists but the actual value ... flags else() #add some other compilation flags endif(USE_MY_LIB) ...

TODO: Require CMake 2.8 and drop this workaround (perhaps late 2010). ... ON) ENDIF(WIN32 AND NOT CYGWIN) IF(WIN32) SET(_WIN32_WINNT 0x0500 CACHE INTERNAL ...

05.04.2015 · 4 Answers Active Oldest Score 10 These expressions are optional as you said and they are useful when you have nested if () statements - cmake will warn you when expr in endif () doesn't match expr in nearest if (). The same is for else (). Simply - this protects you from mistakes in if () else () endif () nested chains. Share

Evaluates the condition argument of the if clause according to the Condition syntax described below. If the result is true, then the commands in the if block are executed. . Otherwise, optional elseif blocks are processed in the sa

endif — CMake 3.23.0-rc4 Documentation endif ¶ Ends a list of commands in an if block. endif ([<condition>]) See the if () command. The optional <condition> argument is supported for backward compatibility only. If used it must be a verbatim repeat of the argument of the opening if …

17.04.2015 · IF used to do insane stuff in older CMake; they sort-of fixed this in CMake 3.1 — in a backward-compatible manner — with CMP0054, which you have to enable explicitly: CMAKE_MINIMUM_REQUIRED(VERSION 3.1) PROJECT(...) CMAKE_POLICY(SET CMP0054 NEW) #-- fixes IF() with quoted args CMAKE_POLICY(SET CMP0057 NEW) #-- enables IF(.. IN_LIST ..)

See the if() command, especially for the syntax and logic of the <condition>.

endif — CMake 3.23.0-rc4 Documentation endif ¶ Ends a list of commands in an if block. endif ([<condition>]) See the if () command. The optional <condition> argument is supported for backward compatibility only. If used it must be a verbatim repeat of the argument of the opening if clause.

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 ...

The if command was written very early in CMake's history, predating the ${} variable evaluation syntax, and for convenience evaluates variables named by …

Apr 06, 2015 · 4 Answers Active Oldest Score 10 These expressions are optional as you said and they are useful when you have nested if () statements - cmake will warn you when expr in endif () doesn't match expr in nearest if (). The same is for else (). Simply - this protects you from mistakes in if () else () endif () nested chains. Share

Never use old CMake syntax code for loop constructs: # NO if(foo) # ... else(foo) # ... endif(foo) # YES if(foo) # ... else() # ... endif().

Conditional Statement (if) ... There are two allowable syntaxes: if(something) do something else(something) # the argument must match the if(...) ...

... DISABLE_GEANT4) include(geant4.cmake) if(Geant4_multithreaded_FOUND) if(NOT DEFINED GGSMULTITHREADED) set(GGSMULTITHREADED 1) endif() ...

How can we achieve more control over the build system generated by CMake? ... Learn the syntax for conditionals in CMake: if - elseif - else - endif.

endif(expression). Evaluates the given expression. If the result is true, the commands in the THEN section are invoked. Otherwise, the commands in the else ...

Nov 13, 2017 · Last week, I shared how to create a CMake project for Windows. Since CMake is a cross-platform software building tool, I am going to make my C/C++ project support Linux and macOS. What You Should Know. How to Make C/C++ Code Compatible with Multiple Platforms. I used the predefined macros to detect the operating system and customize relevant C ...

Per legacy, the else() and endif() commands admit an optional <condition> ... The following syntax applies to the condition argument of the if , elseif and ...

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:

Apr 17, 2015 · IF used to do insane stuff in older CMake; they sort-of fixed this in CMake 3.1 — in a backward-compatible manner — with CMP0054, which you have to enable explicitly: CMAKE_MINIMUM_REQUIRED(VERSION 3.1) PROJECT(...) CMAKE_POLICY(SET CMP0054 NEW) #-- fixes IF() with quoted args CMAKE_POLICY(SET CMP0057 NEW) #-- enables IF(.. IN_LIST ..)