From c823d1f6193fc7394dc345b022618d4e83402a66 Mon Sep 17 00:00:00 2001
From: Robert Schulze <robert@clickhouse.com>
Date: Thu, 17 Aug 2023 12:20:45 +0000
Subject: [PATCH] Make usearch dependencies separate submodules

---
 .gitmodules                            |  9 +++++++++
 contrib/CMakeLists.txt                 | 12 +++++++++++-
 contrib/FP16                           |  1 +
 contrib/FP16-cmake/CMakeLists.txt      |  1 +
 contrib/SimSIMD                        |  1 +
 contrib/SimSIMD-cmake/CMakeLists.txt   |  1 +
 contrib/robin-map                      |  1 +
 contrib/robin-map-cmake/CMakeLists.txt |  1 +
 contrib/usearch-cmake/CMakeLists.txt   | 20 +++++++++++---------
 9 files changed, 37 insertions(+), 10 deletions(-)
 create mode 160000 contrib/FP16
 create mode 100644 contrib/FP16-cmake/CMakeLists.txt
 create mode 160000 contrib/SimSIMD
 create mode 100644 contrib/SimSIMD-cmake/CMakeLists.txt
 create mode 160000 contrib/robin-map
 create mode 100644 contrib/robin-map-cmake/CMakeLists.txt

diff --git a/.gitmodules b/.gitmodules
index 36721723371..c3592372b7e 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -350,3 +350,12 @@
 [submodule "contrib/usearch"]
 	path = contrib/usearch
 	url = https://github.com/unum-cloud/usearch.git
+[submodule "contrib/SimSIMD"]
+	path = contrib/SimSIMD
+	url = https://github.com/ashvardanian/SimSIMD.git
+[submodule "contrib/FP16"]
+	path = contrib/FP16
+	url = https://github.com/Maratyszcza/FP16.git
+[submodule "contrib/robin-map"]
+	path = contrib/robin-map
+	url = https://github.com/Tessil/robin-map.git
diff --git a/contrib/CMakeLists.txt b/contrib/CMakeLists.txt
index abecfcb30c8..2557ebf78ae 100644
--- a/contrib/CMakeLists.txt
+++ b/contrib/CMakeLists.txt
@@ -196,7 +196,17 @@ if (ARCH_S390X)
     add_contrib(crc32-s390x-cmake crc32-s390x)
 endif()
 add_contrib (annoy-cmake annoy)
-add_contrib (usearch-cmake usearch)
+
+option(ENABLE_USEARCH "Enable USearch (Approximate Neighborhood Search, HNSW) support" ${ENABLE_LIBRARIES})
+if (ENABLE_USEARCH)
+    add_contrib (FP16-cmake FP16)
+    add_contrib (robin-map-cmake robin-map)
+    add_contrib (SimSIMD-cmake SimSIMD)
+    add_contrib (usearch-cmake usearch) # requires: FP16, robin-map, SimdSIMD
+else ()
+    message(STATUS "Not using USearch")
+endif ()
+
 add_contrib (xxHash-cmake xxHash)
 
 add_contrib (libbcrypt-cmake libbcrypt)
diff --git a/contrib/FP16 b/contrib/FP16
new file mode 160000
index 00000000000..0a92994d729
--- /dev/null
+++ b/contrib/FP16
@@ -0,0 +1 @@
+Subproject commit 0a92994d729ff76a58f692d3028ca1b64b145d91
diff --git a/contrib/FP16-cmake/CMakeLists.txt b/contrib/FP16-cmake/CMakeLists.txt
new file mode 100644
index 00000000000..f82ad705dcc
--- /dev/null
+++ b/contrib/FP16-cmake/CMakeLists.txt
@@ -0,0 +1 @@
+# See contrib/usearch-cmake/CMakeLists.txt
diff --git a/contrib/SimSIMD b/contrib/SimSIMD
new file mode 160000
index 00000000000..de2cb75b9e9
--- /dev/null
+++ b/contrib/SimSIMD
@@ -0,0 +1 @@
+Subproject commit de2cb75b9e9e3389d5e1e51fd9f8ed151f3c17cf
diff --git a/contrib/SimSIMD-cmake/CMakeLists.txt b/contrib/SimSIMD-cmake/CMakeLists.txt
new file mode 100644
index 00000000000..f82ad705dcc
--- /dev/null
+++ b/contrib/SimSIMD-cmake/CMakeLists.txt
@@ -0,0 +1 @@
+# See contrib/usearch-cmake/CMakeLists.txt
diff --git a/contrib/robin-map b/contrib/robin-map
new file mode 160000
index 00000000000..851a59e0e30
--- /dev/null
+++ b/contrib/robin-map
@@ -0,0 +1 @@
+Subproject commit 851a59e0e3063ee0e23089062090a73fd3de482d
diff --git a/contrib/robin-map-cmake/CMakeLists.txt b/contrib/robin-map-cmake/CMakeLists.txt
new file mode 100644
index 00000000000..f82ad705dcc
--- /dev/null
+++ b/contrib/robin-map-cmake/CMakeLists.txt
@@ -0,0 +1 @@
+# See contrib/usearch-cmake/CMakeLists.txt
diff --git a/contrib/usearch-cmake/CMakeLists.txt b/contrib/usearch-cmake/CMakeLists.txt
index f4ed6a9adca..29fbe57106c 100644
--- a/contrib/usearch-cmake/CMakeLists.txt
+++ b/contrib/usearch-cmake/CMakeLists.txt
@@ -1,15 +1,17 @@
-option(ENABLE_USEARCH "Enable USearch (Approximate Neighborhood Search, HNSW) support" ${ENABLE_LIBRARIES})
-
-if (NOT ENABLE_USEARCH)
-    message (STATUS "Not using usearch")
-    return()
-endif()
-
 set(USEARCH_PROJECT_DIR "${ClickHouse_SOURCE_DIR}/contrib/usearch")
 set(USEARCH_SOURCE_DIR "${USEARCH_PROJECT_DIR}/include")
 
+set(FP16_PROJECT_DIR "${ClickHouse_SOURCE_DIR}/contrib/FP16")
+set(ROBIN_MAP_PROJECT_DIR "${ClickHouse_SOURCE_DIR}/contrib/robin-map")
+set(SIMSIMD_PROJECT_DIR "${ClickHouse_SOURCE_DIR}/contrib/SimSIMD-map")
+
 add_library(_usearch INTERFACE)
-target_include_directories(_usearch SYSTEM INTERFACE ${USEARCH_PROJECT_DIR}/fp16/include ${USEARCH_PROJECT_DIR}/robin-map/include ${USEARCH_PROJECT_DIR}/simsimd/include ${USEARCH_SOURCE_DIR})
+
+target_include_directories(_usearch SYSTEM INTERFACE
+    ${FP16_PROJECT_DIR}/include
+    ${ROBIN_MAP_PROJECT_DIR}/include
+    ${SIMSIMD_PROJECT_DIR}/include
+    ${USEARCH_SOURCE_DIR})
 
 add_library(ch_contrib::usearch ALIAS _usearch)
-target_compile_definitions(_usearch INTERFACE ENABLE_USEARCH)
\ No newline at end of file
+target_compile_definitions(_usearch INTERFACE ENABLE_USEARCH)