From 703ab0a26202358f28e6de584d6ecde96f585264 Mon Sep 17 00:00:00 2001
From: George Huebner <george@feyor.sh>
Date: Tue, 28 Oct 2025 18:04:55 -0500
Subject: [PATCH] fix LBT blas detection on darwin

---
 deps/blastrampoline.mk             |  7 +++++++
 deps/patches/lbt-suffix-hint.patch | 25 +++++++++++++++++++++++++
 2 files changed, 32 insertions(+)
 create mode 100644 deps/patches/lbt-suffix-hint.patch

diff --git a/deps/blastrampoline.mk b/deps/blastrampoline.mk
index cfa28a4d8b..53f6d1e4bd 100644
--- a/deps/blastrampoline.mk
+++ b/deps/blastrampoline.mk
@@ -18,6 +18,13 @@ $(BUILDDIR)/$(BLASTRAMPOLINE_SRC_DIR)/build-compiled: $(BUILDDIR)/$(BLASTRAMPOLI
 	cd $(dir $@)/src && $(MAKE) $(BLASTRAMPOLINE_BUILD_OPTS)
 	echo 1 > $@
 
+$(BUILDDIR)/$(BLASTRAMPOLINE_SRC_DIR)/lbt-suffix-hint.patch.applied: $(BUILDDIR)/$(BLASTRAMPOLINE_SRC_DIR)/source-extracted
+	cd $(dir $@) && \
+		patch -p1 -f < $(SRCDIR)/patches/lbt-suffix-hint.patch
+	echo 1 > $@
+
+$(BUILDDIR)/$(BLASTRAMPOLINE_SRC_DIR)/build-compiled: $(BUILDDIR)/$(BLASTRAMPOLINE_SRC_DIR)/lbt-suffix-hint.patch.applied
+
 define BLASTRAMPOLINE_INSTALL
 	$(MAKE) -C $(BLASTRAMPOLINE_BUILD_ROOT) install $(BLASTRAMPOLINE_BUILD_OPTS) DESTDIR="$2"
 endef
diff --git a/deps/patches/lbt-suffix-hint.patch b/deps/patches/lbt-suffix-hint.patch
new file mode 100644
index 0000000000..d5b5a43c13
--- /dev/null
+++ b/deps/patches/lbt-suffix-hint.patch
@@ -0,0 +1,25 @@
+From 70c929f9182f0c93d60cc68b439f119da80994aa Mon Sep 17 00:00:00 2001
+From: George Huebner <george@feyor.sh>
+Date: Tue, 28 Oct 2025 17:59:35 -0500
+Subject: [PATCH] correctly identify BLAS as ILP64 on darwin
+
+---
+ src/autodetection.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/src/autodetection.c b/src/autodetection.c
+index 86ee124..6a4e1cb 100644
+--- a/src/autodetection.c
++++ b/src/autodetection.c
+@@ -61,6 +61,8 @@ const char * autodetect_symbol_suffix(void * handle, const char * suffix_hint) {
+     const char * suffixes[] = {
+         // Possibly-NULL suffix that we should search over
+         suffix_hint,
++         
++        "64_",
+ 
+         // First, search for LP64-mangling suffixes, so that when we are loading libs from an
+         // CLI environment, (where suffix hints are not easy) we want to give the most stable
+-- 
+2.50.1
+
-- 
2.50.1