pip install fail

[Marston]

#  grib2io-1.1.0.tar.gz
 pip install grib2io

• g2clib.c:745:10: fatal error: grib2.h: No such file or directory 745 | #include "grib2.h"
• Linux
• Versions:
  • python 3.11.1
  • cfgrib 0.9.10.3
  • eccodes 2.29.0

[EricEngle-NOAA]

HI @Marston. grib2io does not interface with eccodes/cfgrib, so those are not required for grib2io. grib2io interfaces with the NCEPLIBS-g2c library. So that must be installed prior to installing grib2io.

See the procedure for g2c build and install here: https://github.com/NOAA-EMC/NCEPLIBS-g2c#building

Once you have the latest g2c (1.7.0) installed, you should be able to perform the following

G2C_DIR=/path/to/g2c pip install grib2io

[Marston]

Hi @EricEngle-NOAA

I have no memory of installing g2c last year. What has changed with the latest version of grib2io? I have g2clib (1.6.3) and I was able to install grib2io (1.0.3).

[EricEngle-NOAA]

That is because prior to grib2io v1.1.0, g2c library was bundled in the source code. v1.1.0 removed this and pointed to an existing installation of g2c. See v1.1.0 release notes

[Marston]

Got NCEPLIBS installed and will install grib2io manually. Thanks for the help.

[Marston]

@EricEngle-NOAA

I'm able to install the NCEPLIB-g2c/sp/ip into a conda/mamba environment.

#!/bin/bash
set -e

source $HOME/mambaforge-pypy3/etc/profile.d/conda.sh
conda activate grib

echo 'Install NCEPLIB-g2c'
rm -rf NCEP* ncep*
wget -O nceplibs-g2c-1.7.0 https://github.com/NOAA-EMC/NCEPLIBS-g2c/archive/refs/tags/v1.7.0.tar.gz
tar xvf nceplibs-g2c-1.7.0
cd NCEPLIBS-g2c-1.7.0
mkdir build && cd build
cmake -DCMAKE_INSTALL_PREFIX=$CONDA_PREFIX -DCMAKE_PREFIX_PATH=$CONDA_PREFIX ..
make -j8
make test
make install

This works but I can only get version 1.1.0 installed: pip install grib2io==1.1.0 not the latest release. You have hardcoded some paths to ip and that causes the build to fail. Created an issue.