************************************************************************ HDF5 Build and Install Instructions for Cygwin ************************************************************************ This document is an instruction on how to build, test and install HDF5 library on Cygwin. See detailed information in hdf5/INSTALL. NOTE: hdf5 can be built with CMake, see the INSTALL_CMake.txt file for more guidance. Preconditions: -------------- 1. Cygwin 3.5.1 or higher Installed To install the Cygwin net release, go to http://www.cygwin.com and click on "setup-x86_64.exe" under the heading "Current Cygwin DLL version". This will download a GUI installer called setup-x86_64.exe which can be run to download a complete Cygwin installation via the internet. Then follow the instructions on each screen to install Cygwin. Cygwin uses packages to manage installing various software. Users can choose to install or uninstall certain packages by running setup.exe. http://www.cygwin.com/packages/ provides detailed information about Cygwin packages. Most required dependencies can be satisfied by installing all packages in the "Devel" category. However, please verify that you have installed all packages listed below. 2. Compilers, Libraries and Utilities Installed 2.1 Compilers Supported The following compilers are supported by HDF5 and included in the Cygwin package system: gcc, which includes: gcc-core : C compiler gcc-g++ : C++ compiler gcc-fortran : Fortran compiler 2.1.1 Using Compilers Not Supported By default the current configuration uses vendor compilers; to use another compiler run the following commands before running configure: setenv CC "foo -flags" setenv FC "fffoo -flags" For example, if users want to use pgf90 as fortran compiler, then setenv FC pgf90 See the configure help page (configure --help) for a list of environment variables that have an affect on building the library. 2.2 HDF5 External Library Dependencies 2.2.1 zlib zlib-1.2.8 or later is supported and tested. 2.2.2 Szip libaec-1.1.2 or later is supported and tested. 2.3 Additional Utilities The following standard utilities are also required to build and test HDF5: bison : yacc implementation flex : flex utility make : make utility 2.4 Alternate Build Process Download the CMake package and follow the notes in the "INSTALL_CMake.txt" file to build HDF5 with the CMake utilities. Build, Test and Install HDF5 on Cygwin -------------------------------------- 1. Get HDF5 source code package Users can download the HDF5 source code from the official GitHub repository (https://github.com/HDFGroup/hdf5). 2. Unpacking the distribution The HDF5 source code is distributed in a variety of formats which can be unpacked with the following commands, each of which creates an `hdf5-1.15.x' directory. 2.1 Non-compressed tar archive (*.tar) $ tar xf hdf5-1.15.x.tar 2.2 Gzip'd tar archive (*.tar.gz) $ gunzip < hdf5-1.15.x.tar.gz | tar xf - 2.3 Bzip'd tar archive (*.tar.bz2) $ bunzip2 < hdf5-1.15.x.tar.bz2 | tar xf - 2. Setup Environment In Cygwin, most compilers and setting are automatically detected during the configure script. However, if you are building Fortran, we recommend that you explicitly set the "FC" variable in your environment to use the gfortran compiler. For example, issue the command: $ export FC=gfortran 4. Configuring Notes: See detailed information in hdf5/release_docs/INSTALL_Auto.txt. The host configuration file for Cygwin is located in the `config' directory and are based on architecture name, vendor name, and operating system which are displayed near the beginning of the `configure' output. The host config file influences the behavior of configure by setting or augmenting shell variables. In short, To configure HDF5 C Library, using $ ./configure To configure HDF5 C/C++ Library, using $ ./configure --enable-cxx To configure HDF5 C/Fortran Library, using $ ./configure --enable-fortran To configure HDF5 C with Szip library, using $ ./configure --with-szlib="path to szlib" For example, if Szip library was installed in the directory /cygdrive/c/szip, which is parent directory of "include" and "lib", then the following command will configure HDF5 C library with Szip enabled: $ ./configure --with-szlib=/cygdrive/c/szip To configure HDF5 C without zlib, To disable zlib, using $ ./configure --without-zlib Two ways to configure HDF5 C with specified zlib Using $ ./configure --with-zlib=INCDIR,LIBDIR For example, if the zlib library is installed in /cygdrive/c/usr, which is the parent directory of directories "include" and "lib", $ ./configure --with-zlib=/cygdrive/c/usr/include,/cygdrive/c/usr/lib Through the CPPFLAGS and LDFLAGS Variables For example, if zlib was installed in the directory /cygdrive/c/usr then using the following command to configure HDF5 with zib $ CPPFLAGS=-I/cygdrive/c/usr/include \ $ LDFLAGS=-L/cygdrive/c/usr/lib \ $ ./configure To specify the installation directories, using $ ./configure --prefix="path for installation" By default, HDF5 library, header files, examples, and support programs will be installed in /usr/local/lib, /usr/local/include, /usr/local/doc/hdf5/examples, and /usr/local/bin. To use a path other than /usr/local specify the path with the `--prefix=PATH' switch as in the above command. Combination of Switches All of the above switches can be combined together. For example, if users want to configure HDF5 C/C++/Fortran library with Szip library enabled, with zlib library at /cygdrive/c/usr/, and install HDF5 into directory /cygdrive/c/hdf5 using gcc/g++ as C/C++ compiler and gfortran as fortran compiler $ ./configure --with-szlib=/cygdrive/c/szip --with-zlib=/cygdrive/c/usr/include,/cygdrive/c/usr/lib --prefix=/cygdrive/c/hdf5 --enable-cxx --enable-fortran <"If no more switches, then hit Enter"> Notes: The command format above is for readilibity. In practice, please type in the command above with at least one space between each line, No "Enter" until users finish the switches and want to run the configure. or do it through CPPFLAGS and LDFLAGS variables: $ CPPFLAGS=-I/cygdrive/c/usr/include \ $ LDFLAGS=-L/cygdrive/c/usr/lib \ $ ./configure --with-szlib=/cygdrive/c/szip --prefix=/cygdrive/c/hdf5 --enable-cxx --enable-fortran <"If no more switches, then hit Enter"> 5. Make and Make Check After configuration is done successfully, run the following series of commands to build, test and install HDF5 $ make > "output file name" $ make check > "output file name" Before run "make install", check output file for "make check", there should be no failures at all. 6. Make Install $ make install > "output file name" 7. Check installed HDF5 library After step 6, go to your installation directory, there should be three subdirectories: "bin" "include" and "lib". 8. Known Problems cache_api tests may fail. This is a known issue with Cygwin. "make check" fails when building shared lib files is enabled. The default on Cygwin has been changed to disable shared. It can be enabled with the --enable-shared configure option but is likely to fail "make check" with GCC compilers. ----------------------------------------------------------------------- HDF Forum: https://forum.hdfgroup.org/ HDF Helpdesk: https://help.hdfgroup.org/