Fix version in RB-3.2 branch

[cary-ilm]

The release version appears to be specified in two places, in OpenEXRConfig.h.in and in openexr_version.h, so as it stands, the version is correct in the current 3.2 release branch but for subsequent patch releases would need to updated in two locations, which is problematic. This needs to get sorted out prior to release.

Presumably, OpenEXRConfig.h.in should read the values fromopenexr_version.h (or the CMakeLists.txt should).

[meshula]

See the comment here ~ originally I had intended OpenEXRConfig.h to include openexr_version.h, but ran into a snarl: #1386 (comment)

Things have been further sorted out subsequently, should be possible to get it right now.

[Vertexwahn]

Just for the records openexr/src/wrappers/python/setup.py also depends on the contents of openexr_version.h:

with open('src/lib/OpenEXRCore/openexr_version.h', 'r') as f:
    txt = f.read()
    for name in ('MAJOR', 'MINOR', 'PATCH'):
        version.append(re.search(
            f'VERSION_{name} ([0-9]*)', txt).group(0).split(' ')[-1])

[meshula]

A good supporting argument for openexr_version.h being the ground truth.

[kmilos]

read the values fromopenexr_version.h (or the CMakeLists.txt should)

If still needed, see e.g. libtiff again for CMake ideas that gives pretty much equivalent to the python above: https://gitlab.com/libtiff/libtiff/-/blob/69eef88fc0e446c35213471f7277ee86265e5871/CMakeLists.txt#L35-L46 and https://gitlab.com/libtiff/libtiff/-/blob/69eef88fc0e446c35213471f7277ee86265e5871/cmake/AutotoolsVersion.cmake

[meshula]

ah, I see it, thanks, we could emulate this.

FILE(STRINGS "${CMAKE_CURRENT_SOURCE_DIR}/configure.ac" configure REGEX "^LIBTIFF_.*=")
foreach(line ${configure})
    foreach(var LIBTIFF_MAJOR_VERSION LIBTIFF_MINOR_VERSION LIBTIFF_MICRO_VERSION LIBTIFF_ALPHA_VERSION
            LIBTIFF_CURRENT LIBTIFF_REVISION LIBTIFF_AGE)
        if(NOT ${var} AND line MATCHES "^${var}=(.*)")
            set(${var} "${CMAKE_MATCH_1}")
            break()
        endif()
    endforeach()
endforeach()

[cary-ilm]

This should be resolve by #1527.