Cmake custom linker flags31.10.2020
Search everywhere only in this topic. Advanced Search. Classic List Threaded. Mark Abraham. In order to build an application with several HPC performance utilities, it would be good to be able to specify the linker and have it show up on the link command line.
CMake mailing list. Re: how to really change CMake linker. HTH, David C. Hi David. Thanks very much for your reply! That was extremely helpful, and will let several packages document a functional workflow for the future.
Ah, that explains one source of confusion. The docs did say that this variable specifies a rule, now that I know what to look for. It's easy to assume that this would be the default behaviour for constructing linking command lines. It's probably too late to consider a change, but I hope the original reasoning works well somewhere! In reply to this post by Mark Abraham. Search everywhere only in this topic Advanced Search how to really change CMake linker. Hi, In order to build an application with several HPC performance utilities, it would be good to be able to specify the linker and have it show up on the link command line.
How should this be accomplished reliably? Mark -- Powered by www. Hi David, Thanks very much for your reply! Free forum by Nabble. Edit this page.This seems to invoke the correct linker script.
However, it also fails to produce any binaries! No compilation or linker errors even with --verbose. The code compiles fine and produces executables without setting this variable. I would just fall back on if statements. The thing I want to do is this:. Search everywhere only in this topic.
Advanced Search. Classic List Threaded. Martin Osterloh. CMAKE set linker variables including custom linker script. I am working with the latest version 2.
Thanks for any help! Cheers, Martin. Vittorio Giovara. The variable you are using overrides the whole linker invocation and you have to take care of all paths and outputs on your own. In reply to this post by Martin Osterloh. Hello Is it meanwhile possible to add configuration specfic compiler flags analouge to link flags?
Miller Henry. Jim Leek. I was just messing around with this yesterday. There may be a better way to do that. Thus why it's not possible to obtain the same functionaltity for compile flags?
SirAnn protective rights. Instead of specific link propierties! Am Cheers, Martin -- Powered by www. Also, don't forget -Wl Cheers, Vittorio -- Powered by www. In reply to this post by Martin Osterloh Hello Is it meanwhile possible to add configuration specfic compiler flags analouge to link flags?
Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I have also tried to set compilation flags:. But to no avail. While I get no issues while compiling, linkage is throwing alot of undefined reference errors for calls found in the above libraries, i.
Please excuse me if those are too many or too localized questions, I haven't tried this before, and I can't seem to find much info on the net. This works without passing a -static which creates other big issues, and can essentially mix static and dynamic libraries. As long as the order of static libraries is correct, and as long as dependencies of static libraries are satisfied, I get an ELF using some dynamic libraries i.
Bear in mind that static linked libraries have their own dependencies. Examining my debug application using readelf -d appI see:.
I know that pthread is imported by Poco::Runnable, libm is for math operations, etc. I am still unaware if this is the right way to use CMake for partial static linking. Learn more. Asked 6 years, 10 months ago. Active 2 days ago. Viewed 82k times. I'm using CMake in a project, and I'm trying to statically link some libraries. Currently the project imports: libPocoNet. Should I be forcing static linking for mentioned libraries but not for entire project? Active Oldest Votes.
Contango MikeM I find it hard to believe that the C library isn't installed. Maybe you need to export your library path? I ended up hardcoding the path to the. MikeM if you care for portability this is not a good solution. Also I'm troubled as to why it won't find it, I'm guessing your library paths aren't exported, or CentOS uses unconventional lib paths?
Well, it finds the. What was impossible is to default to the. How do I setup for static linkage using CMake Well Guillaume Guillaume 8, 1 1 gold badge 25 25 silver badges 45 45 bronze badges. Hello again!
And that is how I still get the link errors. Should I be sending the absolute path of each static library to the linker instead?We can also use CMake scripting commands to more directly determine build options.
To do this, it will help to learn a little of the CMake language syntax. The data types that CMake supports are strings and lists of strings. String and list variables can be defined by using the set command:. CMake comes with a set of special variablesand users may define their own. CMake conveniently provides predefined groups of compiler flags for common build types, such as debug and release.
The build type can be fixed in the CMakeLists. Note that it is also possible to define your own build type, as explained here.
What if we want to add additional compiler flags? It is reasonable to have these flags set for all build types debug, release, etc…. We can do this with either. When we call cmake and then build using. You are commenting using your WordPress. You are commenting using your Google account. You are commenting using your Twitter account. You are commenting using your Facebook account. Notify me of new comments via email. Notify me of new posts via email. Blog at WordPress.
When we call cmake and then build using cmake.
Share this: Twitter Facebook. Like this: Like Loading Filed under programming. Thanks, D. It is fixed now. Leave a Reply Cancel reply Enter your comment here Fill in your details below or click an icon to log in:.
When I try to compile a simple "Hello, World! When I test it by adding a simple exception handling in that code it works too after adding -fexceptions. I guess it is disabled by default. Using target properties, cf. As of CMake 3. Learn more. How do I add a linker or compile flag in a CMake file? Ask Question. Asked 7 years, 8 months ago. Active 6 months ago.
The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. However, if I link a library this extra flag will not be taken into account. This question looks like related. In cmake 3. My CMakeLists. Learn more. How to add linker flag for libraries with CMake?
CMAKE set linker variables (including custom linker script)
Ask Question. Asked 5 years, 9 months ago.
Active 2 months ago. Viewed 57k times. How should I do this? Barth Barth 12k 14 14 gold badges 62 62 silver badges 98 98 bronze badges. Active Oldest Votes. Gluttton Gluttton 4, 2 2 gold badges 23 23 silver badges 48 48 bronze badges. Petrus Kambala Petrus Kambala 76 1 1 silver badge 11 11 bronze badges. Mike Spear Mike Spear 3 3 silver badges 11 11 bronze badges.
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While some aspects of the default settings can be changed when building GCC and Binutils from source, the toolchain we supply in our RPM builds does not do this. We only align the architecture selection to the minimum architecture level required by the distribution.
Consequently, developers need to pay attention to build flags, and manage them according to the needs of their project for optimization, level of warning and error detection, and security hardening. During the build process to create distributions such as Fedora and Red Hat Enterprise Linux, compiler and linker flags have to be injected, as discussed below.
When you are using one of these distributions with the included compiler, this environment is recreated, requiring an extensive list of flags to be specified. Recommended flags vary between distribution versions because of toolchain and kernel limitations. GCC 4.
This table does not list flags for managing an executable stack or the. Documentation for compiler flags is available in the GCC manual.
Those flags which start with -Wl are passed to the linker and are described in the documentation for ld. Your membership unlocks Red Hat products and technical training on enterprise cloud application development. The most recent versions of the redhat-rpm-config package documents how to obtain the distribution compiler and linker flags.
Note that the link goes to the most recent version of the Fedora package. For older distributions, only the following methods for obtaining flags are supported:. Note that Red Hat Enterprise Linux 7 and earlier do not enable fully hardened builds for all packages, and it is necessary to specify:.
The -fstack-protector-strong flag is available in DTS 2. DTS 7. The other version specific limitations are due to system components which are not enhanced by DTS such as glibc or the kernelso these restrictions apply to DTS builds as well.
The flags discussed so far mostly affect code generation and debugging information. For the Developer Toolset, the more recent defaults should be used. Some changes in the standards do not have perfect backwards compatibility. As a result, a porting effort may be required to use the settings for the newer standards. Join Red Hat Developer and get access to handy cheat sheetsfree booksand product downloads. Blog Articles. Recommended compiler and linker flags for GCC.
Develop using Red Hat's most valuable products Your membership unlocks Red Hat products and technical training on enterprise cloud application development.