Try and downgrade hdf5

.github/workflows/build-macos.yml

@@ -25,7 +25,7 @@ jobs:
         target: 'desktop'
 
     - name: Install Dependencies
-      run: brew install ninja doxygen graphviz protobuf hdf5 pkg-config
+      run: brew install ninja doxygen graphviz protobuf hdf5@1.10 pkg-config
 
     - name: Install Cap’n Proto
       run: |
@@ -85,6 +85,7 @@ jobs:
         -DECAL_THIRDPARTY_BUILD_QWT=ON \
         -DECAL_THIRDPARTY_BUILD_YAML-CPP=ON \
         -DCMAKE_BUILD_TYPE=Release \
+        -DCMAKE_PREFIX_PATH=/usr/local/opt/[email protected] \
         -DCMAKE_CXX_STANDARD=17 \
         -DCMAKE_FIND_PACKAGE_PREFER_CONFIG=ON \
         -DPython_FIND_STRATEGY=LOCATION \

contrib/ecalhdf5/CMakeLists.txt

@@ -18,8 +18,15 @@
 
 project(hdf5 LANGUAGES C CXX)
 
-find_package(HDF5 COMPONENTS C REQUIRED)
-find_package(Threads REQUIRED)
+if(NOT CMAKE_CROSSCOMPILING)
+  find_package(HDF5 COMPONENTS C REQUIRED)
+  find_package(Threads REQUIRED)
+else()
+  find_library(hdf5_path NAMES hdf5 REQUIRED PATH_SUFFIXES hdf5/serial)
+  find_path(hdf5_include NAMES hdf5.h PATH_SUFFIXES hdf5/serial REQUIRED)  
+  set(HDF5_LIBRARIES "${hdf5_path};m;dl;z;sz;pthread")
+  set(HDF5_INCLUDE_DIRS "${hdf5_include}")
+endif()
 
 set(ecalhdf5_src
     src/eh5_meas.cpp