Compile error on gcc 4.9.3

[jeroen]

Hi! I was able to compile proj 6.1.0 with gcc 8.3.0, but I also need a build with the pre-cxx11 ABI using gcc 4.9.3. However this builds fails as below. Any suggestion for a fix?

libtool: compile:  /C/Rtools/mingw_32/bin/g++ -std=c++11 -DHAVE_CONFIG_H -I. -I../../proj-6.1.0/src -DPROJ_LIB=\"/mingw32/share/proj\" -DMUTEX_pthread -I../../proj-6.1.0/include -IC:/msys64/mingw32/include -I/mingw32/include -Wall -Wextra -Winit-self -Wunused-parameter -Wformat -Werror=format-security -Wno-format-nonliteral -Wlogical-op -Wshadow -Werror=vla -Wdate-time -Wfloat-conversion -Wmissing-declarations -Wnon-virtual-dtor -Weffc++ -Woverloaded-virtual -Wdeprecated -fno-operator-names -Wzero-as-null-pointer-constant -march=i686 -mtune=generic -O2 -pipe -fvisibility=hidden -MT iso19111/coordinateoperation.lo -MD -MP -MF iso19111/.deps/coordinateoperation.Tpo -c ../../proj-6.1.0/src/iso19111/coordinateoperation.cpp -o iso19111/coordinateoperation.o
libtool: compile:  /C/Rtools/mingw_32/bin/g++ -std=c++11 -DHAVE_CONFIG_H -I. -I../../proj-6.1.0/src -DPROJ_LIB=\"/mingw32/share/proj\" -DMUTEX_pthread -I../../proj-6.1.0/include -IC:/msys64/mingw32/include -I/mingw32/include -Wall -Wextra -Winit-self -Wunused-parameter -Wformat -Werror=format-security -Wno-format-nonliteral -Wlogical-op -Wshadow -Werror=vla -Wdate-time -Wfloat-conversion -Wmissing-declarations -Wnon-virtual-dtor -Weffc++ -Woverloaded-virtual -Wdeprecated -fno-operator-names -Wzero-as-null-pointer-constant -march=i686 -mtune=generic -O2 -pipe -fvisibility=hidden -MT iso19111/io.lo -MD -MP -MF iso19111/.deps/io.Tpo -c ../../proj-6.1.0/src/iso19111/io.cpp -o iso19111/io.o
../../proj-6.1.0/src/iso19111/coordinateoperation.cpp:567:1: error: function 'osgeo::proj::operation::GridDescription::GridDescription(osgeo::proj::operation::GridDescription&&)' defaulted on its redeclaration with an exception-specification that differs from the implicit declaration 'osgeo::proj::operation::GridDescription::GridDescription(osgeo::proj::operation::GridDescription&&)'
 GridDescription::GridDescription(GridDescription &&) noexcept = default;
 ^
make[2]: *** [Makefile:1769: iso19111/coordinateoperation.lo] Error 1
make[2]: *** Waiting for unfinished jobs....

To reproduce with a recent GCC, compile with CXX = "g++ -D_GLIBCXX_USE_CXX11_ABI=0"

Full build log: https://ci.appveyor.com/project/jeroen/rtools-backports/builds/25181069/job/96s9492qtii0cfsa

SO suggests one could simply remove the noexcept but that doesn't seem to work.

[rouault]

@jeroen Can you try the patch of #1513 ?

[jeroen]

Thanks! That fixed it! 🎉