update readme.md

README.md

@@ -15,3 +15,61 @@ g++ hello.cpp -L. -lmath_module -o main
 g++ hello.cpp /path/to/math_module.so -o main
 
 ```
+
+
+## install mini-requirements for clm
+
+### netCDF-C
+
+``` shell
+sudo apt install libhdf5-dev
+wget https://path/to/netcdf-c.source.zip
+unzip netCDF.zip
+cd netcdf
+mkdir build
+cd build
+cmake ../.
+make
+sudo make install
+
+```
+
+### netcdf-fortran
+
+``` shell
+wget https://github.com/Unidata/netcdf-fortran/archive/refs/tags/v4.6.1.zip
+unzip netcdf-fortran
+cd netcdf-fortran
+./configure
+make check
+sudo make install
+
+```
+
+### pnetcdf
+
+``` shell
+
+git clone https://github.com/Parallel-NetCDF/PnetCDF.git
+cd PnetCDF
+autoreconf -i
+
+./configure
+make
+sudo make install
+
+```
+
+
+### lapack
+
+``` shell
+wget https://github.com/Reference-LAPACK/lapack/archive/refs/tags/v3.12.0.zip
+unzip v3.12.0.zip
+cd v3.12.0
+mkdir build
+cd build
+cmake ..
+make
+sudo make install
+```

example6/hello.cc

@@ -1,6 +0,0 @@
-#include <iostream>
-
-int main() {
-    std::cout << "Hello, world\n";
-    return 0;
-}