[tesseract-ocr] Add Tesseract (#2210)

* Add Tesseract

* Use -lz instead of static library path

* Disable Tesseract shared build

* Minimal repository cloning (--depth 1)

* Improve tessdata directory resolution syntax

* Don't hardcode TESSDATA_PREFIX into binary

* Don't move, but copy $SRC/tessdata to $OUT

Move sometimes results in "inter-device move failed"

projects/tesseract-ocr/Dockerfile

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+# Copyright 2019 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+
+FROM gcr.io/oss-fuzz-base/base-builder
+MAINTAINER guidovranken@gmail.com
+RUN apt-get update && apt-get install -y autoconf automake libtool pkg-config libpng-dev libjpeg8-dev libtiff5-dev zlib1g-dev wget
+RUN wget https://github.com/DanBloomberg/leptonica/releases/download/1.77.0/leptonica-1.77.0.tar.gz
+RUN git clone --depth 1 https://github.com/tesseract-ocr/tesseract
+RUN git clone --depth 1 https://github.com/tesseract-ocr/tessdata
+RUN git clone https://github.com/guidovranken/tesseract-ocr-fuzzers
+COPY build.sh $SRC/

projects/tesseract-ocr/build.sh

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+#!/bin/bash -eu
+# Copyright 2019 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+
+cd $SRC
+tar zxf leptonica-1.77.0.tar.gz
+cd leptonica-1.77.0
+./configure
+make -j$(nproc)
+make install
+ldconfig
+
+cd $SRC/tesseract
+./autogen.sh
+CXXFLAGS="$CXXFLAGS -D_GLIBCXX_DEBUG" ./configure --disable-graphics --disable-shared
+make -j$(nproc)
+
+cd $SRC/tesseract-ocr-fuzzers
+
+cp -R $SRC/tessdata $OUT
+
+$CXX $CXXFLAGS \
+    -I $SRC/tesseract/src/api \
+    -I $SRC/tesseract/src/ccstruct \
+    -I $SRC/tesseract/src/ccmain \
+    -I $SRC/tesseract/src/ccutil \
+     $SRC/tesseract-ocr-fuzzers/fuzzer-api.cpp -o $OUT/fuzzer-api \
+     $SRC/tesseract/src/api/.libs/libtesseract.a \
+     /usr/local/lib/liblept.a \
+     /usr/lib/x86_64-linux-gnu/libtiff.a \
+     /usr/lib/x86_64-linux-gnu/libpng.a \
+     /usr/lib/x86_64-linux-gnu/libjpeg.a \
+     /usr/lib/x86_64-linux-gnu/libjbig.a \
+     /usr/lib/x86_64-linux-gnu/liblzma.a \
+     -lz \
+     -lFuzzingEngine

projects/tesseract-ocr/project.yaml

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+homepage: "https://github.com/tesseract-ocr/tesseract"
+primary_contact: "stjoweil@googlemail.com"