Hello,

I downloaded latest beta1 of libraw 0.20, compiled it with gcc 7.3 inside CodeBlocks IDE.
All is working fine.

No I enabled gpr_sdk as follows:
- I set both compiler options USE_GPRSDK and USE_DNGSDK
- I downloaded gpr_sdk from https://github.com/gopro/gpr as given in file README-GoPro.txt
I did no modification to any of these files
- I put the options where to find the *.h files and tried to compile libraw

with command:
x86_64-w64-mingw32-g++.exe -w -m64 -D_WINDOWS -DUNICODE -DWIN32 -DLIBRAW_BUILDLIB -DUSE_JPEG -DUSE_X3FTOOLS -DUSE_6BY9RPI -DUSE_GPRSDK -DUSE_DNGSDK
-I.. -I..\..\LIBJPEG\jpeg-9d-64 -I..\..\GoPro\source\lib\dng_sdk -I..\..\GoPro\source\lib\common\public -I..\..\GoPro\source\lib\gpr_sdk\private
-I..\..\GoPro\source\lib\common\private -c E:\Projects\Project_EIXM\LIBRAW_20BETA-GOPRO\src\libraw_cxx.cpp -o ..\object\debug\LIBRAW_20BETA-GOPRO\src\libraw_cxx.o

and got the following compiler errors:
In file included from E:\Projects\Project_EIXM\LIBRAW_20BETA-GOPRO\src\libraw_cxx.cpp:31:0:

E:\Projects\Project_EIXM\LIBRAW_20BETA-GOPRO\src\integration/dngsdk_glue.cpp:
In function 'dng_ifd* search_for_ifd(const dng_info&, uint64, ushort, ushort, int&, dng_stream&)':
E:\Projects\Project_EIXM\LIBRAW_20BETA-GOPRO\src\integration/dngsdk_glue.cpp:63:34:
error: invalid initialization of reference of type 'const std::vector&' from expression of type 'const AutoPtr [22]'
ret = search_single_ifd(info.fIFD, offset, ifdIndex, stream);
~~~~~^~~~
E:\Projects\Project_EIXM\LIBRAW_20BETA-GOPRO\src\integration/dngsdk_glue.cpp:28:17: note: in passing argument 1 of 'dng_ifd* search_single_ifd(const std::vector&, uint64, int&, dng_stream&)'
static dng_ifd* search_single_ifd(const std::vector & v, uint64 offset, int& idx, dng_stream& stream)
^~~~~~~~~~~~~~~~~

E:\Projects\Project_EIXM\LIBRAW_20BETA-GOPRO\src\integration/dngsdk_glue.cpp:65:44:
error: invalid initialization of reference of type 'const std::vector&' from expression of type 'const AutoPtr [10]'
if (!ret) ret = search_single_ifd(info.fChainedIFD, offset, dummy, stream);
~~~~~^~~~~~~~~~~
E:\Projects\Project_EIXM\LIBRAW_20BETA-GOPRO\src\integration/dngsdk_glue.cpp:28:17: note: in passing argument 1 of 'dng_ifd* search_single_ifd(const std::vector&, uint64, int&, dng_stream&)'
static dng_ifd* search_single_ifd(const std::vector & v, uint64 offset, int& idx, dng_stream& stream)
^~~~~~~~~~~~~~~~~
E:\Projects\Project_EIXM\LIBRAW_20BETA-GOPRO\src\integration/dngsdk_glue.cpp:68:42: error: 'const class dng_info' has no member named 'fChainedSubIFD'; did you mean 'fChainedIFD'?
for (int c = 0; !ret && c < info.fChainedSubIFD.size(); c++)
^~~~~~~~~~~~~~
fChainedIFD
E:\Projects\Project_EIXM\LIBRAW_20BETA-GOPRO\src\integration/dngsdk_glue.cpp:69:42: error: 'const class dng_info' has no member named 'fChainedSubIFD'; did you mean 'fChainedIFD'?
ret = search_single_ifd(info.fChainedSubIFD

, offset, dummy, stream);
                                          ^~~~~~~~~~~~~~
                                          fChainedIFD
 
Can someone point me to the right direction, because I do not see what I am doing wrong.
Any help is appreciated.
Thanks in advance
herb