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Fix INSTALL_CMAKE_DIR for GNU_DIRS and enable by default on Linux. #6410

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Fix INSTALL_CMAKE_DIR for GNU_DIRS and enable by default on Linux. #6410

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1089ee1
Fix INSTALL_CMAKE_DIR for GNU_DIRS and enable by default on Linux.
chuckatkins May 18, 2026
204b259
Merge branch 'develop' into fix-gnu-cmake-dir
lrknox Jun 5, 2026
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12 changes: 10 additions & 2 deletions HDF5Examples/config/HDFMacros.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -90,8 +90,14 @@ macro (HDFTEST_COPY_FILE src dest target)
endmacro ()

macro (HDF_DIR_PATHS package_prefix)
option (H5EXAMPLE_USE_GNU_DIRS "ON to use GNU Coding Standard install directory variables, OFF to use historical settings" OFF)
set(_H5EXAMPLE_USE_GNU_DIRS_DEFAULT ON)
if (CMAKE_SYSTEM_NAME MATCHES "^Windows")
set(_H5EXAMPLE_USE_GNU_DIRS_DEFAULT OFF)
endif()
option (H5EXAMPLE_USE_GNU_DIRS "ON to use GNU Coding Standard install directory variables, OFF to use historical settings" ${_H5EXAMPLE_USE_GNU_DIRS_DEFAULT})
mark_as_advanced (H5EXAMPLE_USE_GNU_DIRS)
unset (_H5EXAMPLE_USE_GNU_DIRS_DEFAULT)

if (H5EXAMPLE_USE_GNU_DIRS)
include(GNUInstallDirs)
if (NOT ${package_prefix}_INSTALL_BIN_DIR)
Expand All @@ -113,7 +119,9 @@ macro (HDF_DIR_PATHS package_prefix)
set (${package_prefix}_INSTALL_DATA_DIR ${CMAKE_INSTALL_DATADIR})
endif ()
if (NOT ${package_prefix}_INSTALL_CMAKE_DIR)
set (${package_prefix}_INSTALL_CMAKE_DIR ${CMAKE_INSTALL_LIBDIR}/cmake)
string(TOLOWER "${package_prefix}" package_prefix_lower)
set (${package_prefix}_INSTALL_CMAKE_DIR ${CMAKE_INSTALL_LIBDIR}/cmake/${package_prefix_lower})
unset(package_prefix_lower)
endif ()
if (NOT ${package_prefix}_INSTALL_DOC_DIR)
set (${package_prefix}_INSTALL_DOC_DIR ${CMAKE_INSTALL_DOCDIR})
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13 changes: 11 additions & 2 deletions config/HDFMacros.cmake
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Expand Up @@ -426,7 +426,14 @@ endmacro ()

# HDF_DIR_PATHS: Set up install directory variables and RPATHs.
macro (HDF_DIR_PATHS package_prefix)
option (HDF5_USE_GNU_DIRS "ON to use GNU Coding Standard install directory variables, OFF to use historical settings" OFF)
set(_HDF5_USE_GNU_DIRS_DEFAULT ON)
if (CMAKE_SYSTEM_NAME MATCHES "^Windows")
set(_HDF5_USE_GNU_DIRS_DEFAULT OFF)
endif()
option (HDF5_USE_GNU_DIRS "ON to use GNU Coding Standard install directory variables, OFF to use historical settings" ${_HDF5_USE_GNU_DIRS_DEFAULT})
mark_as_advanced (HDF5_USE_GNU_DIRS)
unset (_HDF5_USE_GNU_DIRS_DEFAULT)

if (HDF5_USE_GNU_DIRS)
include(GNUInstallDirs)
if (NOT ${package_prefix}_INSTALL_BIN_DIR)
Expand All @@ -451,7 +458,9 @@ macro (HDF_DIR_PATHS package_prefix)
set (${package_prefix}_INSTALL_DATA_DIR ${CMAKE_INSTALL_DATADIR})
endif ()
if (NOT ${package_prefix}_INSTALL_CMAKE_DIR)
set (${package_prefix}_INSTALL_CMAKE_DIR ${CMAKE_INSTALL_LIBDIR}/cmake)
string(TOLOWER "${package_prefix}" package_prefix_lower)
set (${package_prefix}_INSTALL_CMAKE_DIR ${CMAKE_INSTALL_LIBDIR}/cmake/${package_prefix_lower})
unset(package_prefix_lower)
endif ()
if (NOT ${package_prefix}_INSTALL_DOC_DIR)
set (${package_prefix}_INSTALL_DOC_DIR ${CMAKE_INSTALL_DOCDIR})
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6 changes: 3 additions & 3 deletions docs/INSTALL_CMake_options.md
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Expand Up @@ -88,13 +88,13 @@ These options control how HDF5 gets installed. Options dealing with paths are ge

| CMake option | Type | Default | Description |
|:-------------|:-----|:--------|:------------|
| `HDF5_USE_GNU_DIRS` | `BOOL` | `OFF` | If `ON`, uses the GNU Coding Standard CMake install directory variables when setting up for installing the HDF5 library. See [GNUInstallDirs](https://cmake.org/cmake/help/latest/module/GNUInstallDirs.html) for more information. |
| `HDF5_USE_GNU_DIRS` | `BOOL` | Varies by platform | If `ON`, uses the GNU Coding Standard CMake install directory variables when setting up for installing the HDF5 library. See [GNUInstallDirs](https://cmake.org/cmake/help/latest/module/GNUInstallDirs.html) for more information. |
| `HDF5_INSTALL_BIN_DIR` | `STRING` | `bin` | Specifies the directory to install executables in. |
| `HDF5_INSTALL_LIB_DIR` | `STRING` | `lib` | Specifies the directory to install libraries in. |
| `HDF5_INSTALL_JNI_LIB_DIR` | `STRING` | `lib` | Specifies the directory to install Java JNI libraries in. |
| `HDF5_INSTALL_INCLUDE_DIR` | `STRING` | `include` | Specifies the directory to install header files in. |
| `HDF5_INSTALL_MODULE_DIR` | `STRING` | `mod` (`HDF5_USE_GNU_DIRS=OFF`) <br /> `HDF5_INSTALL_INCLUDE_DIR/mod` (`HDF5_USE_GNU_DIRS=ON`) | Specifies the directory to install Fortran .mod files in. |
| `HDF5_INSTALL_CMAKE_DIR` | `STRING` | `cmake` (`HDF5_USE_GNU_DIRS=OFF`) <br /> `HDF5_INSTALL_LIB_DIR/cmake` (`HDF5_USE_GNU_DIRS=ON`) | Specifies the directory to install CMake files in. |
| `HDF5_INSTALL_CMAKE_DIR` | `STRING` | `cmake` (`HDF5_USE_GNU_DIRS=OFF`) <br /> `HDF5_INSTALL_LIB_DIR/cmake/hdf5` (`HDF5_USE_GNU_DIRS=ON`) | Specifies the directory to install CMake files in. |
| `HDF5_INSTALL_DATA_DIR` | `STRING` | `.` (for `MSVC` and `HDF5_USE_GNU_DIRS=OFF`) <br /> `share` (`HDF5_USE_GNU_DIRS=ON`) | Specifies the directory to install miscellaneous data files in. |
| `HDF5_INSTALL_DOC_DIR` | `STRING` | `HDF5_INSTALL_DATA_DIR` (`HDF5_USE_GNU_DIRS=OFF`) <br /> `HDF5_INSTALL_DATA_DIR/doc/hdf5` (`HDF5_USE_GNU_DIRS=ON`) | Specifies the directory to install documentation files in. |
| `HDF5_BUILD_WITH_INSTALL_NAME` | `BOOL` | `OFF` | **MacOS only** If `ON`, builds shared library CMake targets with the "install_name" field set to the installation path. See the related CMake property [INSTALL_NAME_DIR](https://cmake.org/cmake/help/latest/prop_tgt/INSTALL_NAME_DIR.html#prop_tgt:INSTALL_NAME_DIR). |
Expand Down Expand Up @@ -315,7 +315,7 @@ These are options which can be set for controlling how the HDF5 example programs
| `H5EXAMPLE_USE_110_API` | `BOOL` | `OFF` | If `ON`, compile the HDF5 library examples programs using the HDF5 1.10 API. |
| `H5EXAMPLE_USE_18_API` | `BOOL` | `OFF` | If `ON`, compile the HDF5 library examples programs using the HDF5 1.8 API. |
| `H5EXAMPLE_USE_16_API` | `BOOL` | `OFF` | If `ON`, compile the HDF5 library examples programs using the HDF5 1.6 API. |
| `H5EXAMPLE_USE_GNU_DIRS` | `BOOL` | `OFF` | If `ON`, uses the GNU Coding Standard CMake install directory variables when setting up for installing the HDF5 library example programs. See [GNUInstallDirs](https://cmake.org/cmake/help/latest/module/GNUInstallDirs.html) for more information. |
| `H5EXAMPLE_USE_GNU_DIRS` | `BOOL` | Varies by platform | If `ON`, uses the GNU Coding Standard CMake install directory variables when setting up for installing the HDF5 library example programs. See [GNUInstallDirs](https://cmake.org/cmake/help/latest/module/GNUInstallDirs.html) for more information. |
| `H5EXAMPLE_DISABLE_COMPILER_WARNINGS` | `BOOL` | `OFF` | If `ON`, disables most or all compiler warnings when building the HDF5 library example programs. |
| `H5EXAMPLE_BUILD_FRAMEWORKS` | `BOOL` | `OFF` | If `ON`, the HDF5 library example programs will be built as a framework bundle when built on MacOS. |

Expand Down
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