From a8a151d69460d2815c2530b6727e56874864f1fd Mon Sep 17 00:00:00 2001
From: Sebastian Ehlert <sehlert@microsoft.com>
Date: Tue, 11 Nov 2025 09:23:20 +0100
Subject: [PATCH 1/3] Allow finding HighFive dependency from environment

---
 cmake/gauxc-dep-versions.cmake |  2 +-
 src/external/CMakeLists.txt    | 31 +++++++++++++++++--------------
 2 files changed, 18 insertions(+), 15 deletions(-)

diff --git a/cmake/gauxc-dep-versions.cmake b/cmake/gauxc-dep-versions.cmake
index d27e7a0e..7946af25 100644
--- a/cmake/gauxc-dep-versions.cmake
+++ b/cmake/gauxc-dep-versions.cmake
@@ -19,5 +19,5 @@ set( GAUXC_GAU2GRID_REVISION   v2.0.6 )
 set( GAUXC_INTEGRATORXX_REPOSITORY https://github.com/wavefunction91/IntegratorXX.git )
 set( GAUXC_INTEGRATORXX_REVISION   1369be58d7a3235dac36d75dd964fef058830622 )
 
-set( GAUXC_HIGHFIVE_REPOSITORY https://github.com/BlueBrain/HighFive.git )
+set( GAUXC_HIGHFIVE_REPOSITORY https://github.com/highfive-devs/HighFive.git )
 set( GAUXC_HIGHFIVE_REVISION 805f0e13d09b47c4b01d40682621904aa3b31bb8 )
diff --git a/src/external/CMakeLists.txt b/src/external/CMakeLists.txt
index fa1f7f37..4bc11ccf 100644
--- a/src/external/CMakeLists.txt
+++ b/src/external/CMakeLists.txt
@@ -15,22 +15,25 @@ if( GAUXC_ENABLE_HDF5 )
   if(HDF5_FOUND)
     set(GAUXC_HAS_HDF5 TRUE CACHE BOOL "" FORCE)
     message(STATUS "Enabling HDF5 Bindings")
-    message(STATUS "HighFive REPO = ${GAUXC_HIGHFIVE_REPOSITORY}")
-    message(STATUS "HighFive REV  = ${GAUXC_HIGHFIVE_REVISION}  ")
-    FetchContent_Declare( HighFive
-      GIT_REPOSITORY ${GAUXC_HIGHFIVE_REPOSITORY}
-      GIT_TAG        ${GAUXC_HIGHFIVE_REVISION}  
-    )
+    find_package(HighFive QUITE)
+    if(NOT HighFive_FOUND)
+      message(STATUS "HighFive REPO = ${GAUXC_HIGHFIVE_REPOSITORY}")
+      message(STATUS "HighFive REV  = ${GAUXC_HIGHFIVE_REVISION}  ")
+      FetchContent_Declare( HighFive
+        GIT_REPOSITORY ${GAUXC_HIGHFIVE_REPOSITORY}
+        GIT_TAG        ${GAUXC_HIGHFIVE_REVISION}  
+      )
     
-    set(HIGHFIVE_USE_BOOST OFF CACHE BOOL "" )
-    set(HIGHFIVE_UNIT_TESTS OFF CACHE BOOL "" )
-    set(HIGHFIVE_EXAMPLES OFF CACHE BOOL "" )
-    #set(HIGHFIVE_PARALLEL_HDF5 ON CACHE BOOL "" )
-    set(HIGHFIVE_BUILD_DOCS OFF CACHE BOOL "" )
-    FetchContent_MakeAvailable( HighFive )
+      set(HIGHFIVE_USE_BOOST OFF CACHE BOOL "" )
+      set(HIGHFIVE_UNIT_TESTS OFF CACHE BOOL "" )
+      set(HIGHFIVE_EXAMPLES OFF CACHE BOOL "" )
+      #set(HIGHFIVE_PARALLEL_HDF5 ON CACHE BOOL "" )
+      set(HIGHFIVE_BUILD_DOCS OFF CACHE BOOL "" )
+      FetchContent_MakeAvailable( HighFive )
     
-    target_sources( gauxc PRIVATE hdf5_write.cxx hdf5_read.cxx )
-    target_link_libraries( gauxc PUBLIC HighFive )
+      target_sources( gauxc PRIVATE hdf5_write.cxx hdf5_read.cxx )
+      target_link_libraries( gauxc PUBLIC HighFive )
+    endif()
   else()
     message(WARNING "GAUXC_ENABLE_HDF5 was enabled, but HDF5 was not found, Disabling HDF5 Bindings")
   endif()

From 2535b84386f9e83cdc8c62ca98628878b7d71d77 Mon Sep 17 00:00:00 2001
From: Sebastian Ehlert <28669218+awvwgk@users.noreply.github.com>
Date: Tue, 11 Nov 2025 11:32:27 +0100
Subject: [PATCH 2/3] Fix typo

---
 src/external/CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/external/CMakeLists.txt b/src/external/CMakeLists.txt
index 4bc11ccf..d6c3d4e1 100644
--- a/src/external/CMakeLists.txt
+++ b/src/external/CMakeLists.txt
@@ -15,7 +15,7 @@ if( GAUXC_ENABLE_HDF5 )
   if(HDF5_FOUND)
     set(GAUXC_HAS_HDF5 TRUE CACHE BOOL "" FORCE)
     message(STATUS "Enabling HDF5 Bindings")
-    find_package(HighFive QUITE)
+    find_package(HighFive QUIET)
     if(NOT HighFive_FOUND)
       message(STATUS "HighFive REPO = ${GAUXC_HIGHFIVE_REPOSITORY}")
       message(STATUS "HighFive REV  = ${GAUXC_HIGHFIVE_REVISION}  ")

From 2f31722c192e807ce2958bd249d97c35c21971b2 Mon Sep 17 00:00:00 2001
From: Sebastian Ehlert <28669218+awvwgk@users.noreply.github.com>
Date: Tue, 11 Nov 2025 15:12:29 +0100
Subject: [PATCH 3/3] Link HighFive if found

---
 src/external/CMakeLists.txt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/external/CMakeLists.txt b/src/external/CMakeLists.txt
index d6c3d4e1..46612c81 100644
--- a/src/external/CMakeLists.txt
+++ b/src/external/CMakeLists.txt
@@ -31,9 +31,9 @@ if( GAUXC_ENABLE_HDF5 )
       set(HIGHFIVE_BUILD_DOCS OFF CACHE BOOL "" )
       FetchContent_MakeAvailable( HighFive )
     
-      target_sources( gauxc PRIVATE hdf5_write.cxx hdf5_read.cxx )
-      target_link_libraries( gauxc PUBLIC HighFive )
     endif()
+    target_sources( gauxc PRIVATE hdf5_write.cxx hdf5_read.cxx )
+    target_link_libraries( gauxc PUBLIC HighFive )
   else()
     message(WARNING "GAUXC_ENABLE_HDF5 was enabled, but HDF5 was not found, Disabling HDF5 Bindings")
   endif()