Modern interactive LLVM-based Fortran compiler. Follow this account for the latest updates about LFortran.
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LFortran now works in WebAssembly. Here is a very alpha-version demo that runs in your browser and it is *fast*:
dev.lfortran.org/
It still has many bugs, which you can report here if they are not already reported:
github.com/lfortran/lcompile…
github.com/lfortran/lfortran…
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Thanks to great work by @Anutosh21 and @QuantStack, LFortran now works in JupyterLite with our main LLVM backend!
blog.jupyter.org/posts/2026/…
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The Oregon Trail in the browser – FORTRAN 77 to WebAssembly with LFortran, by @minhqdao .
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LFortran is at the front page of Hacker News right now: news.ycombinator.com/item?id…
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LFortran retweeted
We've come a long way. Now we are just compiling as many codes as we can until we can expect LFortran to just work; after that we will work on performance. Then we will announce beta quality.
LFortran can now compile the Fortran Package Manager (fpm): lfortran.org/blog/2026/02/lf…. Big milestone for us!
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LFortran can now compile the Fortran Package Manager (fpm): lfortran.org/blog/2026/02/lf…. Big milestone for us!
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As any respectable Fortran compiler must do, LFortran now compiles LAPACK, probably the most famous Fortran library. All tests pass, single/double precision, real/complex, 32-bit/64-bit integers.
lfortran.org/blog/2026/02/lf…
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LFortran retweeted
Yep, using the LFortran compiler (@lfortranorg) allows some interactivity with Jupyter but it ain't feature-complete obviously. They're making an awesome work though. As for plotting, you can find a list of tools following this link: tinyurl.com/mprs2txr
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LFortran retweeted
Just created a guide and test suite for setting up a C & #Fortran dev environment on Windows, covering MSVC, MinGW (MSYS2), and Intel oneAPI. Hope this helps others!
Feedback welcome! @fortrantip @lfortranorg @fortranlang
github.com/Foadsf/win-multi-…
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The BerkeleyLab/assert library now supports LFortran!
github.com/BerkeleyLab/asser…
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LFortran compiles POT3D, a solar coronal magnetic field solver. It uses MPI and `do concurrent` and runs in parallel correctly.
lfortran.org/blog/2025/03/lf…
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Congrats to Flang on the big milestone: blog.llvm.org/posts/2025-03-…. Thanks for mentioning LFortran and fortran-lang.org (@fortranlang) as well.
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LFortran compiles Prima
lfortran.org/blog/2025/03/lf…
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LFortran is now in the Compiler Explorer (@CompileExplore), big thanks to @sh0ck_thi and @mattgodbolt. Please report all bugs.
Here is a sample link:
godbolt.org/z/M8j5P39M4
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LFortran retweeted
We are steadily moving towards beta quality. I am very happy with the progress. The intrinsics are very fast, no runtime overhead, see the blog post for all details.
LFortran supports all intrinsic functions. Great job by @HarshitaK1107 , Parth, @Pranavchiku and the rest of the team!
lfortran.org/blog/2024/11/lf…
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LFortran retweeted
Great work guys✨. The amount of effort put in here is fascinating.
LFortran supports all intrinsic functions. Great job by @HarshitaK1107 , Parth, @Pranavchiku and the rest of the team!
lfortran.org/blog/2024/11/lf…
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LFortran supports all intrinsic functions. Great job by @HarshitaK1107 , Parth, @Pranavchiku and the rest of the team!
lfortran.org/blog/2024/11/lf…
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LFortran retweeted
احب اشارك الشغل اللي كنت بعمله بقالي فتره ف البروجكت الواعد ده. دلوقتي كومبيلر LFortran بقا يقدر يcompile واحده من اتقل الاكواد اللي بتعمل array maniuplation. كان في تحديات كتير واتعلمت كتير من زمايلي ف التيم ومن التيم ليدر. وان شاء الله نكبر رقعه الاكواد المدعومه اكتر.🎉🎉💪
LFortran now compiles SNAP and runs it correctly, our most complicated code yet.
lfortran.org/blog/2024/08/lf…
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