turning on g2c_compare in code coverage workflow (#808)

Author: edwardhartnett

.github/workflows/developer.yml

@@ -79,7 +79,7 @@ jobs:
         mkdir build
         doxygen --version
         cd build
-        cmake -DUSE_G2C_API=ON -DBUILD_UTILS=ON -DUSE_AEC=ON -DFTP_LARGE_TEST_FILES=ON -DCMAKE_PREFIX_PATH="$GITHUB_WORKSPACE/nceplibs/jasper;$GITHUB_WORKSPACE/nceplibs/NCEPLIBS-bacio;$GITHUB_WORKSPACE/nceplibs/NCEPLIBS-w3emc;$GITHUB_WORKSPACE/nceplibs/NCEPLIBS-ip;$GITHUB_WORKSPACE/nceplibs/NCEPLIBS-g2c" -DCMAKE_Fortran_FLAGS="-g -fprofile-abs-path -fprofile-arcs -ftest-coverage -O0" -DCMAKE_C_FLAGS="-g -fprofile-abs-path -fprofile-arcs -ftest-coverage -O0" -DFTP_TEST_FILES=ON -DTEST_FILE_DIR=/home/runner/data ..
+        cmake -DUSE_G2C_API=ON -DG2C_COMPARE=ON -DBUILD_UTILS=ON -DUSE_AEC=ON -DFTP_LARGE_TEST_FILES=ON -DCMAKE_PREFIX_PATH="$GITHUB_WORKSPACE/nceplibs/jasper;$GITHUB_WORKSPACE/nceplibs/NCEPLIBS-bacio;$GITHUB_WORKSPACE/nceplibs/NCEPLIBS-w3emc;$GITHUB_WORKSPACE/nceplibs/NCEPLIBS-ip;$GITHUB_WORKSPACE/nceplibs/NCEPLIBS-g2c" -DCMAKE_Fortran_FLAGS="-g -fprofile-abs-path -fprofile-arcs -ftest-coverage -O0" -DCMAKE_C_FLAGS="-g -fprofile-abs-path -fprofile-arcs -ftest-coverage -O0" -DFTP_TEST_FILES=ON -DTEST_FILE_DIR=/home/runner/data ..
         make -j2 VERBOSE=1
         ctest --verbose --output-on-failure --rerun-failed
         gcovr --root .. -v  --html-details --exclude ../tests --exclude CMakeFiles --print-summary -o test-coverage.html &> /dev/null