[PROTON-2168] cmake -DBUILD_WITH_CXX=ON build breaks on Linux

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Resolved
• Affects Version/s: proton-c-0.30.0
• Fix Version/s: proton-c-0.32.0
• Component/s: build
• Assignee: Unassigned
• Reporter: Jiri Daněk
• Created: 21/Jan/20 17:04
• Updated: 26/Aug/20 20:24
• Resolved: 02/Aug/20 23:50

Description

Compile as in PROTON-2145, that means

mkdir _build
cd _build
cmake .. -DCMAKE_INSTALL_PREFIX=/usr/local\
  -DSYSINSTALL_BINDINGS=ON\
  -DBUILD_STATIC_LIBS=ON\
  -DBUILD_TESTING=OFF\
  -DBUILD_WITH_CXX=ON\
  -DENABLE_FUZZ_TESTING=OFF\
  -DFUZZ_REGRESSION_TESTS=OFF

make -j4
make install

The -DBUILD_WITH_CXX=ON is breaking builds on Linux

[ 28%] Building CXX object c/CMakeFiles/qpid-proton-core-objects.dir/src/core/codec.c.o
/qpid-proton/c/src/platform/platform.c: In function 'void pn_i_strerror(int, char*, size_t)':
/qpid-proton/c/src/platform/platform.c:92:13: error: ignoring return value of 'char* strerror_r(int, char*, size_t)', declared with attribute warn_unused_result [-Werror=unused-result]                                                
   strerror_r(errnum, buf, buflen);                                                                                 
   ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~                                                                                  
cc1plus: all warnings being treated as errors

Issue Links

• is fixed by: PROTON-2208 Change base C language/compiler requirements to C99 or equivalent