doc/hooks/cernlib: document CERNLIB hook (#341691)

NixOS · Sep 14, 2024 · 94eeb71 · 94eeb71
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diff --git a/doc/hooks/cernlib.section.md b/doc/hooks/cernlib.section.md
@@ -0,0 +1,3 @@
+# CERNLIB {#cernlib-hook}
+
+This hook sets the `CERN`, `CERN_LEVEL`, and `CERN_ROOT` environment variables. They are part of [CERNLIB's build system](https://cernlib.web.cern.ch/install/install.html), and are are needed for some programs to compile correctly.
diff --git a/doc/hooks/index.md b/doc/hooks/index.md
@@ -10,6 +10,7 @@ automake.section.md
 autopatchelf.section.md
 bmake.section.md
 breakpoint.section.md
+cernlib.section.md
 cmake.section.md
 gdk-pixbuf.section.md
 ghc.section.md