| Message ID | 675b9052-5688-6079-2300-86e51f7939b1@codesourcery.com |
|---|---|
| State | New |
| Headers | show |
| Series | [wwwdocs] gcc-14/changes.htm - Offloading: -lm/-lgfortran is autolinked | expand |
On Fri, 16 Jun 2023, Tobias Burnus wrote: > Thomas recently improved the offload experience by avoiding to use, e.g. > > gfortran -O3 -fopenmp qcd.f90 -lblas -foffload-options="-lgfortran -lm" > > as libm and libgfortran now automatically get linked as 'gfortran' links > -lgfortran and -lm on the host (only those libraries, not others). Thus, > the commandline now looks much more natural: > > gfortran -O3 -fopenmp qcd.f90 -lblas Nice! > Attached patch documents it in the release notes. > I loved to hear comments, suggestions, improvements (or even appraisals). Looks good to me. (Personally I would have written "the math and Fortran runtime libraries", which is shorter, but pretty much a matter of preference. IOW, keep it as is unless you like it better, too. :-) One idea might be to show the two invocations - before and after - in the release notes as well, at the end of that new entry. Totally up to you, too. For the benefit of the doubt: Okay, thank you! Gerald
gcc-14/changes.htm - Offloading: -lm/-lgfortran is autolinked diff --git a/htdocs/gcc-14/changes.html b/htdocs/gcc-14/changes.html index c403c94f..96653f05 100644 --- a/htdocs/gcc-14/changes.html +++ b/htdocs/gcc-14/changes.html @@ -51,6 +51,15 @@ a work-in-progress.</p> was extended. </li> </ul> + </li> + <li>For offload-device code generated via OpenMP and OpenACC, the math + library and the Fortran runtime library will now automatically be linked, + when the user or compiler links them on the host side. Thus, it is no + longer required to explicitly pass <code>-lm</code> and/or + <code>-lgfortran</code> to the offload-device linker using the <a + href="https://gcc.gnu.org/onlinedocs/gcc/C-Dialect-Options.html#index-foffload-options" + ><code>-foffload-options=</code></a> flag. + </li> </ul> <!-- .................................................................. --> <h2 id="languages">New Languages and Language specific improvements</h2>