Convert oss-fuzz-build to use cmake

README-maintainer

@@ -80,11 +80,8 @@ GOOGLE OSS-FUZZ
 
   Clone the oss-fuzz project. From the root directory of the repository:
 
-  Add `-e GITHUB_FORK=fork -e GITHUB_BRANCH=branch` to build_fuzzers
-  from a qpdf fork/branch rather than qpdf/main.
-
   python3 infra/helper.py build_image --pull qpdf
-  python3 infra/helper.py build_fuzzers [ --sanitizer memory|undefined|address ] qpdf
+  python3 infra/helper.py build_fuzzers [ --sanitizer memory|undefined|address ] qpdf [path-to-qpdf-source]
   python3 infra/helper.py check_build qpdf
   python3 infra/helper.py build_fuzzers --sanitizer coverage qpdf
   python3 infra/helper.py coverage qpdf

build-scripts/build-fuzzer

@@ -4,8 +4,12 @@ export WORK=$PWD/work
 export OUT=$PWD/out
 mkdir -p $WORK $OUT
 sudo apt-get update
-sudo apt-get -y install \
-   autoconf build-essential zlib1g-dev libjpeg-dev
+sudo apt-get -y install build-essential cmake zlib1g-dev libjpeg-dev
 ./fuzz/oss-fuzz-build
-ls -l out/qpdf*fuzzer
+ls -l out/qpdf_fuzzer
 ls -l out/
+if ldd out/qpdf_fuzzer | egrep 'libjpeg|libz|libqpdf'; then
+    echo 1>&2 "*** Fuzzers linked dynamically with some dependent libraries."
+    ldd out/qpdf_fuzzer
+    exit 2
+fi

fuzz/oss-fuzz-build

@@ -21,15 +21,9 @@ if [[ $GITHUB_FORK != "" ]]; then
     fi
 fi
 
-./configure \
-  --enable-oss-fuzz \
-  --enable-static \
-  --disable-shared \
-  --enable-crypto-native \
-  --disable-implicit-crypto \
-  --prefix="$WORK" \
-  LDFLAGS="-L$WORK/lib" \
-  CPPFLAGS="-I$WORK/include" \
-  LIBS="-pthread"
-make -j$(nproc) install
-make install_fuzz
+env CMAKE_PREFIX_PATH=$WORK LDFLAGS="-L$WORK/lib -lpthread" \
+    cmake -S . -B build \
+    -DOSS_FUZZ=1 -DBUILD_SHARED_LIBS=0 -DCMAKE_BUILD_TYPE=Debug \
+    -DUSE_IMPLICIT_CRYPTO=0 -DREQUIRE_CRYPTO_NATIVE=1
+cmake --build build -j$(nproc) --target fuzzers
+cmake --install build --component fuzz