move OSS fuzz build script into the repo

Author: dloebl

fuzz/oss_fuzz_build.sh

@@ -0,0 +1,22 @@
+#!/bin/bash -eu
+
+# build and install cgif
+meson setup -Dfuzzer=true --prefix=$WORK --libdir=lib --default-library=static build
+meson install -C build
+# run tests:
+# This is going to generate the seed corpus from all the tests
+meson test -C build
+
+cp "build/fuzz/cgif_fuzzer_seed_corpus.zip" $OUT/.
+cp "build/fuzz/cgif_file_fuzzer_seed_corpus.zip" $OUT/.
+cp "build/fuzz/cgif_rgb_fuzzer_seed_corpus.zip" $OUT/.
+
+# build cgif's fuzz targets
+$CXX $CXXFLAGS -o "$OUT/cgif_fuzzer" -I"$WORK/include" \
+  $LIB_FUZZING_ENGINE fuzz/cgif_fuzzer.c "$WORK/lib/libcgif.a"
+
+$CXX $CXXFLAGS -o "$OUT/cgif_file_fuzzer" -I"$WORK/include" \
+  $LIB_FUZZING_ENGINE fuzz/cgif_file_fuzzer.c "$WORK/lib/libcgif.a"
+
+$CXX $CXXFLAGS -o "$OUT/cgif_rgb_fuzzer" -I"$WORK/include" \
+  $LIB_FUZZING_ENGINE fuzz/cgif_rgb_fuzzer.c "$WORK/lib/libcgif.a"