Contents

1 Motivation

Rhdf5lib provides versions of the C and C++ HDF5 libraries. It is primarily useful to developers of other R packages who want to make use of the capabilities of the HDF5 library directly in the C or C++ code of their own packages, rather than using a higher level interface such as the rhdf5 package. Using Rhdf5lib makes life easier for users, as they do not have to worry about installing libraries at a system level, and for developers since they can work with a defined version of the library rather than developing strategies to cope with the potential for multiple versions.

Rhdf5lib is very much inspired by the zlibbioc and Rhtslib packages.

2 Usage

There is an example package, usingRhdf5lib, that demonstrates how packages should link to Rhdf5lib.

2.2 Locating the library headers

In order for the C/C++ compiler to find the HDF5 headers during package installation, add Rhdf5lib to the LinkingTo field of the DESCRIPTION file of your package, e.g.

LinkingTo: Rhdf5lib

In you C or C++ code files, you can then use the standard include techniques, e.g., #include "hdf5.h" or #include "H5Cpp.h". You can inspect the header files manually to check their names and declared functions. To find their location on your system you can use the following code:

system.file(package="Rhdf5lib", "include")
## [1] "/tmp/RtmpKCBZ8z/Rinst24d00f1fa9673f/Rhdf5lib/include"

3 Configuration arguments for non-standard system setups

3.1 Non-standard ZLIB location

Rhdf5lib requires the ZLIB compression library to be installed on non-Windows platforms. If installation fails with a message reporting that zlib.h can not be found, it is possible to provide the appropriate path explicitly during installation via the configure.args argument e.g. 

BiocManager::install('Rhdf5lib', configure.args = "--with-zlib='/path/to/zlib/'")

Here /path/to/zlib should be the directory that contains both include/zlib.h and lib/libz.a. For example, on a typical Ubuntu installation this may be /usr/ while for libraries installed via miniconda this location could be /home/<USER>/miniconda3/.

3.3 Disabling setting rpath

If you encounter problems checking whether to use -Wl,-rpath to “link shared libs in nondefault directories” you can disable the test by passing the option "--disable-sharedlib-rath" to the configuration script.

BiocManager::install('Rhdf5lib', configure.args = "--disable-sharedlib-rath")

4 Funding

MLS was supported by the BMBF-funded Heidelberg Center for Human Bioinformatics (HD-HuB) within the German Network for Bioinformatics Infrastructure (de.NBI), Grant Number #031A537B

Session info

## R version 4.2.1 (2022-06-23)
## Platform: x86_64-pc-linux-gnu (64-bit)
## Running under: Ubuntu 20.04.5 LTS
## 
## Matrix products: default
## BLAS:   /home/biocbuild/bbs-3.16-bioc/R/lib/libRblas.so
## LAPACK: /home/biocbuild/bbs-3.16-bioc/R/lib/libRlapack.so
## 
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##  [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8   
##  [7] LC_PAPER=en_US.UTF-8       LC_NAME=C                 
##  [9] LC_ADDRESS=C               LC_TELEPHONE=C            
## [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       
## 
## attached base packages:
## [1] stats     graphics  grDevices utils     datasets  methods   base     
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## other attached packages:
## [1] BiocStyle_2.26.0
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## loaded via a namespace (and not attached):
##  [1] bookdown_0.29       digest_0.6.30       R6_2.5.1           
##  [4] jsonlite_1.8.3      magrittr_2.0.3      evaluate_0.17      
##  [7] stringi_1.7.8       cachem_1.0.6        rlang_1.0.6        
## [10] cli_3.4.1           jquerylib_0.1.4     bslib_0.4.0        
## [13] rmarkdown_2.17      tools_4.2.1         stringr_1.4.1      
## [16] xfun_0.34           yaml_2.3.6          fastmap_1.1.0      
## [19] compiler_4.2.1      BiocManager_1.30.19 htmltools_0.5.3    
## [22] knitr_1.40          sass_0.4.2