Bump Eigen version to 3.3.9 (#225)

nzfeng · web-flow · commit 52a533bd9d63 · 2025-08-06T15:50:44.000-04:00
Eigen 3.3.8 is known to have a bug. Somehow geometry-central and its tests never trigger the problematic code, but is sometimes triggered when geometry-central is used within other projects (and only on Linux, but not on Mac -- I guess the codepath is different on macOS vs. linux). The bug is fixed in the next version (3.3.9), so fetch that version of Eigen instead.
diff --git a/deps/CMakeLists.txt b/deps/CMakeLists.txt
@@ -72,7 +72,7 @@ else()
       FetchContent_Declare(
           eigen
           GIT_REPOSITORY  https://gitlab.com/libeigen/eigen.git
-          GIT_TAG         3.3.8
+          GIT_TAG         3.3.9
           SOURCE_DIR      "${CMAKE_CURRENT_BINARY_DIR}/eigen-src"
           BINARY_DIR      "${CMAKE_CURRENT_BINARY_DIR}/eigen-build"
       )

Original file line number	Diff line number	Diff line change
`@@ -72,7 +72,7 @@ else()`
`72`	`72`	`FetchContent_Declare(`
`73`	`73`	`eigen`
`74`	`74`	`GIT_REPOSITORY https://gitlab.com/libeigen/eigen.git`
`75`		`- GIT_TAG 3.3.8`
	`75`	`+ GIT_TAG 3.3.9`
`76`	`76`	`SOURCE_DIR "${CMAKE_CURRENT_BINARY_DIR}/eigen-src"`
`77`	`77`	`BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}/eigen-build"`
`78`	`78`	`)`