Thanks again. I could solve the compile problems. Now, I'm getting a lot of undefined symbols when trying to link the library against my app. Most of them sound like the optional packages have been compiled into the library, now missing their references when linking against the static library for branch "LibRaw 0.21-stable", which sounds weird.

ld: Undefined symbols:
  LibRaw::open_file(char const*), referenced from:
      _Java_net_bwmc_libraw_LibRawImageLoader_loadRawImage in LibRawImageLoader.o

I tried to resolve this, by rolling back to version 0.20 and rebuild the library for this version, which previously worked. However, the list of undefined references I get while linking is even longer. Now, it sounds like optional libraries haven't been detected as optional when switching to branch "LibRaw 0.20-stable" and rebuilding after 'make clean'.

ld: Undefined symbols:
  LibRaw::open_file(char const*), referenced from:
      _Java_net_bwmc_libraw_LibRawImageLoader_loadRawImage in LibRawImageLoader.o
  _jpeg_CreateDecompress, referenced from:
      LibRaw::lossy_dng_load_raw() in libraw.a[9](dng.o)
      LibRaw::kodak_jpeg_load_raw() in libraw.a[13](kodak_decoders.o)
  _jpeg_abort_decompress, referenced from:
      LibRaw::lossy_dng_load_raw() in libraw.a[9](dng.o)
  _jpeg_destroy_decompress, referenced from:
      LibRaw::lossy_dng_load_raw() in libraw.a[9](dng.o)
      LibRaw::lossy_dng_load_raw() in libraw.a[9](dng.o)
      LibRaw::lossy_dng_load_raw() in libraw.a[9](dng.o)
      LibRaw::kodak_jpeg_load_raw() in libraw.a[13](kodak_decoders.o)
      LibRaw::kodak_jpeg_load_raw() in libraw.a[13](kodak_decoders.o)
  _jpeg_finish_decompress, referenced from:
      LibRaw::kodak_jpeg_load_raw() in libraw.a[13](kodak_decoders.o)
      LibRaw::kodak_jpeg_load_raw() in libraw.a[13](kodak_decoders.o)
  ...

I followed the instructions how to compile by executing these commands:

autoreconf --install
./configure
make

Also I tried 'make clean' and rebuild from scratch and removed many files manually, with no success.

Any suggestion how to solve this?

Hi Alex,

Again, thanks for your quick support. I realized, that I had to update the whole brew installation on my mac and also install and upgrade a lot more tools and libraries, like automake or pkg-config, which is mentioned in an earlier post.

Also I had to install libraries, like jasper, or zlib. From a perspective of such an upgraded full fledged development machine, it is hard to judge, what libraries need to be provided with libraw bundled with an app on a plain macos end-user installation.

All dependencies (additional libraries) that are now compiled with libraw obviously do not exist on a barebone macos installation, esp. without additional development tools like XCode and additional add-ons installed using homebrew installation manager.

Is there a list of libraries (DLLs, share libs) that need to be provided together with any application that relies on libraw and not running in a full fledged development machine environment?

It would be a nightmare for a developer of collecting complaints from end-users that quickly refuse to use your app because its not running on a real world mac. :-)

Thanks,

Thilo

Thanks for your suggestions! I've decided to directly use the data in rawdata.raw_image. I've realized that the 1 discrepancy might just be a coincidence after testing different raw formats.

dcraw -D is 'totally RAW, no scaling'

Just skip processing and use raw data from imgdata.rawdata.raw_image (or color3_image,color4_image).

samples/unprocessed_raw.cpp sample is probably what you're looking for.

LibRaw is about RAW data and metadata extraction.

Existing postprocessing code is intended mostly for testing purposes, there is no plans to improve it.

This is clearly stated on this site main page.

>> I tried various conversions

The wchar_t* string is passed directly to Win32/CreateFileW

So, if you're able to use other Win32 file API calls, it should work for LibRaw too.

UPD: on modern windows, all interfaces are unicode already, starting from wmain/_tmain program 1st function, so there is no need to convert anything from/to 8-bit strings.

LibRaw's goal is to read RAW data and metadata, as explained on this site 1st page: https://www.libraw.org/

Postprocessing is indeed imported from dcraw, there is no other postprocessing in LibRaw.
If one want to process RAW data in own code: LibRaw::open_file()/unpack() is enough for that.

Do you have a specific question or do you asking to re-tell the entire documentation in other words?

If everything works for you and you are happy with the result, what else do you want to improve?

https://www.libraw.org/docs/API-datastruct-eng.html#libraw_rawdata_t

I've tried all the options that could make a difference, but there are not that many options in the Librarian when compiling LibRaw as a static lib.

I've settled to compile LibRaw with Ox instead O2 and that works just fine. Maybe it's a tick slower than it could, but I think it's fine.

Do you have a big spam problem? The post form always tells me to take more time filling the form. Maybe I type too fast ;-)

Tried the linker option. No change.
This is not available for libraries (I link LibRaw as a static lib). But setting the options in my DLL which links to LibRaw made no change.

I've also played with string pooling and the other options that differ (https://learn.microsoft.com/en-us/cpp/build/reference/o1-o2-minimize-siz...) between Optimization (Speed) which works and Maximize Optimization (Speed) which does not work. Without any success.

I'll stick to /Ox /Ob2 /Oi /Ot for now.