Commit97e5c218Recorded24 Apr 2026Repositorysigil-graphics

v0.9.3: procedural link-flags for cross-compile correctness

Message

Migrates link-flags: from (case (host-os) ...) to (lambda (ctx) (case (target-os ctx) ...)) so cross-compile builds (Linux → Windows via zig) pick the right branch at link time.

Before: (case (host-os) ...) evaluated once at package-load on the host, so -lGL leaked into Windows cross-compile builds and caused the final link to fail against zig's MinGW sysroot (which has no matching GL import library).

OS branches are unchanged: linux → -lGL darwin → -framework OpenGL -framework Metal -framework MetalKit windows → '() (sokol_gfx's GL backend dynamically loads opengl32.dll)

Requires sigil-build 0.14.0+ (for target-os helper and procedural link-flags: dispatch in collect-native-link-flags).

Changed
 CHANGELOG.md | 20 ++++++++++++++++++++
 package.sgl  | 18 ++++++++++++------
 2 files changed, 32 insertions(+), 6 deletions(-)
Diff
CHANGELOG.mdmodified
@@ -5,6 +5,26 @@ All notable changes to this project will be documented in this file.
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The format is based on [Keep a Changelog](https://keepachangelog.com/),
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and this project adheres to [Semantic Versioning](https://semver.org/).
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## [0.9.3] - 2026-04-24
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### Fixed
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- `link-flags:` now uses `(lambda (ctx) (case (target-os ctx) ...))`
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instead of a host-based `(case (host-os) ...)` expression. The
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host-based form evaluated at package-load time on the host, so
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`-lGL` leaked into Windows cross-compile builds and caused the
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final link to fail against zig's MinGW sysroot (which has no
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matching GL import library). The procedural form re-evaluates at
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link time with the target triple. Branches themselves are
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unchanged (`linux`: `-lGL`; `darwin`: `-framework OpenGL
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-framework Metal -framework MetalKit`; `windows`: `'()`, since
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sokol_gfx's GL backend dynamically loads `opengl32.dll`).
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### Requires
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- `sigil-build` 0.14.0+ (for the `target-os` / `target-arch` helpers
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and the procedural-link-flags dispatch in `collect-native-link-flags`).
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## [0.9.0] - 2026-04-18
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> Note: skips 0.8.0. The `v0.8.0` git tag was used on 2026-03-29 for the
package.sglmodified
@@ -5,7 +5,7 @@
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(package
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name: "sigil-graphics"
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version: "0.9.2"
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version: "0.9.3"
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description: "2D graphics, image loading, and font rendering for Sigil"
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url: "https://codeberg.org/sigil/sigil-graphics"
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license: "BSD-3-Clause"
@@ -51,11 +51,17 @@
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;; Windows: sokol_gfx's GL backend loads opengl32.dll dynamically via
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;; LoadLibraryA + GetProcAddress (kernel32 — linked via sigil-app), so no
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;; extra link libs are needed beyond what sigil-app provides.
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link-flags: (case (host-os)
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((linux) '("-lGL"))
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((darwin) '("-framework" "OpenGL" "-framework" "Metal" "-framework" "MetalKit"))
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((windows) '())
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(else '()))))
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;;
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;; Procedural (lambda ctx) form so cross-compile configs evaluate
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;; the right branch at link time. (case (host-os) ...) was evaluated
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;; once at package-load on the host, leaking `-lGL` into Windows
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;; cross builds.
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link-flags: (lambda (ctx)
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(case (target-os ctx)
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((linux) '("-lGL"))
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((darwin) '("-framework" "OpenGL" "-framework" "Metal" "-framework" "MetalKit"))
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((windows) '())
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(else '())))))
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tasks: (list
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(task