wantright.blogg.se - Cmake set variable to true

#Cmake set variable to true how to#
#Cmake set variable to true code#

A function or macro always define a new command. receive error message xmscc0008 i using standard vanilla mq configuration. CMake supports both functions and macros to provide a named abstraction for some repetitive works.

#Cmake set variable to true code#

2) how open, close,, re-open connections? in attempts resolve question 1 above discovered if open connection call connection.close() not able obtain connection connection factory (see code fragment below). can send, receive) yes, send message inside try block, catch ensuing exception i'm hoping more elegant solution. net client, how test if client connected server (i.e. 'then you should not be using set and should leave it to the user to use -D' - Normally, the code calls set for a variable, which is expected to be defined by a user. Is there way tell automoc mockable files?ġ.). in case need know headers might have q_object inside, included source files. Variables are case sensitive and can have any of the following scope: Function scope: A variable defined in a function can not be seen after the function has returned Directory: A variable set outside of a function will have the scope of the current CMakeLists.txt directory. The great thing automoc don't need know files need mocked. The primary command for variables manipulation is set. Src/include/some_header.hpp # included in source.cppĬontent of main cmakelists.txt: cmake_mimimum_required(version 2.8.6) project("automoctest") add_subdirectory(src/lib)Ĭontent of src/lib/cmakelists.txt: include_directories($/src/include The actual project quite complex, part of automated build system. CMake offers boolean operator for string comparisons, such as STREQUAL for string equality, and for version comparisons, such as VERSIONEQUAL. The value given to option is really only the "initial value" (transferred once to the cache during the first configuration step) and is afterwards meant to be changed by the user through CMake's GUI.In essence want able moc header files not part of target in cmake additional difficulty don't know filenames of headers. But be aware, don't mistake the option with the set command.

Mainly just cached strings that only can be ON or OFF and they allow some special handling like e.g.

I would recommend to always set cmake_policy(SET CMP0054 NEW) to "only interpret if() arguments as variables or keywords when unquoted." This has a number of consequences, as explained in the Argument Caveats section below. In a macro, they are not, they are string replacements much like the C preprocessor would do with a macro. They are given in the command line to CMake via the -D option, or passed from. are true variables in the usual CMake sense. Most configuration variables are not environment variables but CMake variables.

The good news is that this was fixed in CMake 3.1 with the introduction of policy CMP0054. In a function, ARGN, ARGC, ARGV and ARGV0, ARGV1.

So the best solution here would be - see above - to directly check for if(MSVC).

if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") is false, because it evaluates to if("MSVC" STREQUAL "1").

Some variables are already here, like CMAKEBUILDTYPE.

set(MyStringWithVar "Some other Text: $" STREQUAL "MSVC") is true, because it evaluates to if("1" STREQUAL "1") If you want to set a variable from the command line, CMake offers a variable cache.

#Cmake set variable to true how to#

When writing CMake scripts there is a lot you need to know about the syntax and how to use variables in CMake.