Wholearchive windows cmake archive#
Wholearchive windows cmake code#

Modified variables are automatically saved to CMakeSettings.json. You can change the value of any CMake variable by editing the “ Value” column of the table. You can c heck “Show Advanced Variables” to show all cache variables or use the search functionality to filter CMake variables by name. Advanced variables (per the CMake GUI ) are hidden by default. You can click “Save and Generate CMake Cache to Load Variables” to generate the CMake cache and populate a table with all the CMake cache variables available for you to edit. The CMake Variables and Cache section provides a new way for you to edit CMake variables. The Advanced section is hidden by default and can be expanded by clicking the link to “Show advanced settings” at the bottom of the editor.

The General, Command Arguments, and Advanced sections provide a user interface for properties exposed in the CMakeSettings.json file. The editor contains four sections: General, Command Arguments, CMake Variables and Cache, and Advanced. You can also now clone an existing configuration so that the new configuration inherits all properties set by the original. The left side of the editor contains a configurations sidebar where you can easily toggle between your existing configurations, add a new configuration, and remove configurations. If you prefer to manage your configurations directly from the CMakeSettings.json file, you can click the link to “Edit JSON” in the top right-hand corner of the editor. You can also right-click on CMakeSettings.json in the S olution E xplorer and select “Edit CMake Settings” from the context menu. The CMake Project Settings Editor opens by default when you select “Manage Configurations…” from the configuration drop-down menu at the top of the screen. This is the first preview of th is new UI so we will continue to improve it based on your feedback. The goal of this editor is to simplify the experience of configuring a CMake project by grouping and promoting commonly used settings, hiding advanced settings, and making it easier to edit CMake variables. If you’re just getting started with CMake in Visual Studio, head over to our CMake Support in Visual Studio introductory page. The editor provides an alternative to modifying the CMakeSettings.json file directly and allows you to create and manage your CMake configurations.

Wholearchive windows cmake archive#

Means dynamic lib will not omit some global variable, and whole archive option can save it.Visual Studio 2019 Preview 2 introduces a new CMake Project Settings Editor to help you more easily configure your CMake projects in Visual Studio. ”./main-whole-archive” and “./main-dynamic”, we find both “A::A” and “B::B” are called. To verify if any one symbols defined in a object file is used by main directly or indirectly, then all the symbols (codes) inside the object will be linked into target. You could add some functions inside the b.cpp, and see if that function can be find inside the target binary’s symbols. To verify it’s the object file not contained, not just the global variable. ”./main” we can find only “A::A” is called, and “B::B” is not called, this means the object file b.o containing global object ‘b’ is not compiled into the lib. Running the generated executable, we can find: $ g++ main.o -Wl,-whole-archive libX.a -Wl,-no-whole-archive -o main-whole-archive a archive, not based on the global object and reserve functions in same object file. Note: the linker omits some object files of the. Use the “–whole-archive” option of the linker when linking with static lib, such that the object will not be omitted. Then the client application calls the function. In that cases, we could solve this by two methods:ĭeclare the object to function local static variable, and export that function/functions. There is pattern that use global object intialization for self registered resource. But that global object is not exported to client applications. Global object auto initialization has side effect which needs by the lib itself to run correctly.

Wholearchive windows cmake code#

This is good and saves the generated code size and remove “dead code” in the target binary, but this default behavior has caused un-intended effects when combined with two things:

Conflict between linker’s default behavior and programmer’s intentionīy default the linker will omit one object file inside an static lib archive if every symbols inside that object are not used by the target binary directly or indirectly.