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doc: we use the reference document on how to compile #12

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47 changes: 5 additions & 42 deletions TrainingTesseract-4.00.md
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Expand Up @@ -94,55 +94,18 @@ is highly recommended to read the [ImproveQuality](ImproveQuality) page.

# Additional Libraries Required

Beginning with 3.03, additional libraries are required to build the training
First you need to have a working compilation chain, see [Compiling](Compiling)

Then, additional libraries are required to build the training
tools.

```bash
sudo apt-get install libicu-dev libpango1.0-dev libcairo2-dev
```

# Building the Training Tools

Beginning with 3.03, if you're compiling Tesseract from source you need to make
and install the training tools with separate make commands. Once the above
additional libraries have been installed, run the following from the Tesseract
source directory:

```bash
./configure
```
or if you plan to run in docker (or do not require graphics):
```bash
./configure --disable-graphics
```

By default Tesseract configuration will proceed if dependencies required only
for training are missing, but for training, you will have to ensure all those
optional dependencies are installed and that Tesseract's build environment
can locate them. Look for these lines in the output of `./configure`:

```
checking for pkg-config... [some valid path]
checking for lept >= 1.74... yes
checking for libarchive... yes
checking for icu-uc >= 52.1... yes
checking for icu-i18n >= 52.1... yes
checking for pango >= 1.22.0... yes
checking for cairo... yes
[...]
Training tools can be built and installed with:
```

(The version numbers may change over time, of course. What we are looking for is
"yes", all of the optional dependencies are available.)

If configure does not say the training tools can be built, you still need to add
libraries or ensure that `pkg-config` can find them.

After configuring, you can attempt to build the training tools:
After configuring with `./configure`, you can attempt to build the training tools:

```bash
make
make training
sudo make training-install
```
Expand Down Expand Up @@ -1208,4 +1171,4 @@ If you notice that your model is misbehaving, for example by:
* Adding `Space` where it should not do that.
* etc...

[Then read the hallucination topic.](The-Hallucination-Effect.md)
[Then read the hallucination topic.](The-Hallucination-Effect.md)