.xdc
1 claimant
0 primary
1 secondary
secondary-only
SWH popularity
Distinct files in the full Software Heritage archive (2026-06-04 export), dated by first appearance, following Desmazières, Di Cosmo, Lorentz (MSR 2025). Case-aggregated. citation.
154.2K
first seen 2021–2025 (45.9%)
2020
median year (half its files since)
Case variants in archive: .xdc (336.1K), .XDC (123), .XdC (1), .xDc (1) — aggregated above.
Attribution status
This extension is attributed to Tcl — every claim across all sources (including secondary ones) points to a single language.
Authoritative sources: △ Linguist · secondary ✗ Pygments · no claim ✗ Wikidata · no claim ✗ Wikipedia · no claim
Disagree or have a correction? Open a labelling issue.
Claimants (1)
Languages that list .xdc among their extensions. Strength reflects whether the upstream source treated it as their primary extension.
| Language | Source | Strength |
|---|
| Tcl | linguist | secondary |
SWH-mined examples (2)
Real archived programs with this extension, byte-verified against the SWH archive, grouped by predicted language and by how the prediction was made. Useful for deciding what this extension actually is when the attribution is uncertain.
Tcl (2) — 2 via fallback
swh:1:cnt:b2005fc5c6d42a9fc23bcea738c710e70eaa095c;origin=https://github.com/suisuisi/FPGA_Library;anchor=swh:1:rev:d95b04432091b7498f2233ee55743a022f64c7ad;path=/ThreePart/digilent_ip/ip/Pmods/PmodOLED_v1_0/src/PmodOLED_ooc.xdc
swh:1:cnt:9ae7bee9a3b48816f3c978ed6af17aa9de1c4efc;origin=https://github.com/MinimalOS/arm-linux-androideabi-4.9;anchor=swh:1:rev:70f01eba6b3bcfc8825ceffa01244f5f85908559;path=/arm-linux-androideabi/lib/ldscripts/elf32tilegx_be.xdc