Update README for PDF doc

README.md

@@ -9,13 +9,21 @@ See also [developers documentation](DEVELOPERS.md) (in french)
  * [jalhyd](https://gitlab.irstea.fr/cassiopee/jalhyd)
  * npm
  * python3
+ * pandoc (optional, for PDF documentation only)
+ * texlive (optional, for PDF documentation only)
  
-Building the documentation requires MkDocs and some extensions:
+Building the HTML documentation requires MkDocs and some extensions:
 
 ```sh
 sudo apt install python3-pip python3-setuptools
 python3 -m pip install mkdocs python-markdown-math mkdocs-material
 ```
+ 
+Building the PDF documentation requires pandoc and a LaTeX distribution (for ex. texlive) with a few packages:
+
+```sh
+sudo apt install pandoc texlive-base texlive-bibtex-extra texlive-binaries texlive-font-utils texlive-fonts-recommended texlive-lang-french texlive-latex-base texlive-latex-extra texlive-latex-recommended texlive-pictures
+```
 
 ### Install dependencies
 
@@ -35,6 +43,7 @@ Then in `nghyd` folder, run :
 npm install
 ```
 
+
 ### Compile and get a deployable Web app
 
 ```sh
@@ -42,6 +51,13 @@ npm run build
 ```
 
 
+### Compile and get a deployable Web app (without PDF doc)
+Use this if you don't want to install LaTeX dependencies.
+```sh
+npm run build-no-pdf
+```
+
+
 ### Compile in dev (watch) mode
 
 ```sh
@@ -178,15 +194,12 @@ npm run mkdocs
 ```
 
 
-### Create PDF documentation from HTML documentation
+### Generate PDF documentation
 
 ```sh
- sudo apt-get install texlive texlive-lang-french texlive-latex-extra pandoc
+npm run mkdocs2pdf
 ```
 
-```sh
-python3 mkdocs2pdf.py
-```
 
 ### Generate compodoc