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CMake HDF5 Static: Work-Around for ZLIB #1894

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ax3l merged 1 commit into from
Jun 24, 2026
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CMake HDF5 Static: Work-Around for ZLIB #1894

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8 changes: 8 additions & 0 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -297,6 +297,14 @@ endif()
# The following configuration files were considered but not accepted:
# ../share/cmake/hdf5/hdf5-config.cmake, version: 1.10.7
# - thus, we do our own HDF5_VERSION check...
# external library: ZLIB (work-around for an upstream HDF5 packaging issue)
# Static build of HDF5 forget to do `find_dependency(ZLIB) in their
# CMake config, but expose them in INTERFACE_LINK_LIBRARIES. Thus,
# find_package(HDF5) fails. ZLIB is optional but usually used by HDF5.
if(HDF5_USE_STATIC_LIBRARIES AND NOT TARGET ZLIB::ZLIB)
find_package(ZLIB QUIET)
endif()

if(openPMD_USE_HDF5 STREQUAL AUTO)
set(HDF5_PREFER_PARALLEL ${openPMD_HAVE_MPI})
find_package(HDF5 COMPONENTS C)
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