[qpid-proton] fix patch after changes to upstream build (#1610)

This is a temporary workaround until I can get
* https://github.com/apache/qpid-proton/pull/143
* and https://github.com/apache/qpid-proton/pull/146
reviewed and merged in upstream.

After that, no patches should be necessary.

projects/qpid-proton/Dockerfile

@@ -25,4 +25,3 @@ RUN git clone git://git.apache.org/qpid-proton.git
 WORKDIR qpid-proton
 COPY build.sh $SRC/
 COPY c_tests_fuzz_CMakeLists.patch $SRC/
-COPY c_CMakeLists.patch $SRC/

projects/qpid-proton/build.sh

@@ -15,11 +15,10 @@
 #
 ################################################################################
 
-patch -p1 < $SRC/c_tests_fuzz_CMakeLists.patch
-patch -p1 < $SRC/c_CMakeLists.patch
+patch -p1 < $SRC/c_tests_fuzz_CMakeLists.patch || (cat c/tests/fuzz/CMakeLists.txt.rej && false)
 mkdir build
 pushd build
-  cmake .. -DCMAKE_BUILD_TYPE=Release -DENABLE_FUZZ_TESTING=ON -DFUZZ_REGRESSION_TESTS=OFF
+  cmake .. -DCMAKE_BUILD_TYPE=Release -DBUILD_STATIC_LIBS=ON -DENABLE_FUZZ_TESTING=ON -DFUZZ_REGRESSION_TESTS=OFF
   pushd c/tests/fuzz/
     make -j $(nproc)
   popd

projects/qpid-proton/c_CMakeLists.patch

@@ -1,13 +0,0 @@
-diff --git a/c/CMakeLists.txt b/c/CMakeLists.txt
-index 40b50374..2247e0f1 100644
---- a/c/CMakeLists.txt
-+++ b/c/CMakeLists.txt
-@@ -539,7 +539,7 @@ if (BUILD_WITH_CXX)
- endif (BUILD_WITH_CXX)
- 
- add_library (
--  qpid-proton-core SHARED
-+  qpid-proton-core STATIC
-   ${qpid-proton-core}
-   ${qpid-proton-layers}
-   ${qpid-proton-platform}

projects/qpid-proton/c_tests_fuzz_CMakeLists.patch

@@ -1,11 +1,19 @@
 diff --git a/c/tests/fuzz/CMakeLists.txt b/c/tests/fuzz/CMakeLists.txt
-index f870d617..054ec6d6 100644
+index f870d617..c9d46168 100644
 --- a/c/tests/fuzz/CMakeLists.txt
 +++ b/c/tests/fuzz/CMakeLists.txt
-@@ -33,6 +33,8 @@ add_library (StandaloneFuzzTargetMain STATIC StandaloneFuzzTargetMain.c Standalo
+@@ -32,7 +32,15 @@ add_library (StandaloneFuzzTargetMain STATIC StandaloneFuzzTargetMain.c Standalo
+ 
  macro (pn_add_fuzz_test test)
    add_executable (${test} ${ARGN})
-   target_link_libraries (${test} qpid-proton-core ${FUZZING_LIBRARY})
+-  target_link_libraries (${test} qpid-proton-core ${FUZZING_LIBRARY})
++  # prefer static lib for the fuzzer, if available
++  if (BUILD_STATIC_LIBS)
++    set(FUZZING_QPID_PROTON_CORE_LIBRARY qpid-proton-core-static)
++  else()
++    set(FUZZING_QPID_PROTON_CORE_LIBRARY qpid-proton-core)
++  endif()
++  target_link_libraries (${test} ${FUZZING_QPID_PROTON_CORE_LIBRARY} ${FUZZING_LIBRARY})
 +  # -lFuzzingEngine is a C++ library, which needs c++ std lib
 +  set_target_properties(${test} PROPERTIES LINKER_LANGUAGE CXX)