diff --git a/.gitmodules b/.gitmodules
index 0468ed4..ae00f78 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -9580,3 +9580,6 @@
 [submodule "xml-stylebook"]
 	path = xml-stylebook
 	url = ../../SLFO-pool/xml-stylebook
+[submodule "llvm19"]
+	path = llvm19
+	url = ../../SLFO-pool/llvm19
diff --git a/Mesa b/Mesa
index e4372f1..fa64a6b 160000
--- a/Mesa
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diff --git a/gmmlib b/gmmlib
index bb76a54..beb4684 160000
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index d0a4718..dafd4e1 160000
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index 12fb6e4..d460be6 160000
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diff --git a/llvm19 b/llvm19
new file mode 160000
index 0000000..91edf70
--- /dev/null
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diff --git a/rust-bindgen b/rust-bindgen
index 8834861..c3f3578 160000
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index b3f6232..e8c6b88 160000
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index 40c27c1..770b10d 160000
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index c3a1f76..c3566b6 160000
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diff --git a/texlive-specs-b b/texlive-specs-b
index 40e494b..43b6719 160000
--- a/texlive-specs-b
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index 3fbe579..f20aeb8 160000
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index d563312..46f9f96 160000
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index d9650be..1ca2bed 160000
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index 607d60d..abf1985 160000
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index 3e7568a..a72fe05 160000
--- a/texlive-specs-i
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index 23d3122..800f8c9 160000
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index cb38f3a..3f7a820 160000
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