David and Kai, thanks for your input. With Kai's hint I figured out that GDAL
was not being built with MrSID and ECW support because I didn't have the paths
right in my -DMRSID_INCLUDE_DIR, -DMRSID_LIBRARY, -DECW_INCLUDE_DIR and
-DECW_LIBRARY defines. This was causing the config step to fail. The key for me
was realizing there was a log file just for the config:
buildtrees/gdal/config-x86-windows-out.log. The reason I didn't look in this
log file earlier was that I had a separate quoting problem that was causing
half of my command line, including those bad paths, to be dropped silently by
the config process (i.e., a warning, not an error). I find the quoting rules in
CMake's set, string, and CONCAT to be counter-intuitive. I wish CMake could
have been built on top of Python, JavaScript, or some other well-known language
instead of being its own strange thing.
Regarding static linking, I meant that I was trying to link gdal itself
statically, not the MrSID and ECW libraries. For my use case having those
libraries in their own DLLs is fine and actually somewhat preferred.
On Monday, February 24, 2025 at 06:26:05 AM PST, David Klaus
<[email protected]> wrote:
Michael,
I noticed you said the following:
"I am linking statically to GDAL built as a static library with vcpkg (which
builds without error)."
I may be interpreting this incorrectly, but it sounds like you intend to link
the NCSEcw library. However, I believe your ECW_LIBRARY variable references the
dynamic NCSEcw.lib import library. If you are trying to link this library
statically, I believe you need to use the following library:
ERDAS_ECW_JPEG_2000_SDK_5.5.0.zip\Desktop_Read-Only\lib\vc141\Win32\NCSEcwS.lib
or for an x64 build:
ERDAS_ECW_JPEG_2000_SDK_5.5.0.zip\Desktop_Read-Only\lib\vc141\x64\NCSEcwS.lib
I apologize if I've misinterpreted you here or if I'm giving you incorrect
information (I am somewhat new to this as well).
As far as linking this library statically, I have not successfully done this
when building using vcpkg. I have been able to build with dynamic linking which
is okay for our purposes (though not ideal). If you get static linking working,
I'd love to hear how you did it. Thank you,
On Sat, Feb 22, 2025 at 2:15 AM Kai Pastor, DG0YT via gdal-dev
<[email protected]> wrote:
IMO you ask for trouble when you manually inject -DFRMT_mrsid=ON into
CFLAGS and CXXFLAGS. This is CMake input ("ON"!). Let the configuration do that
for you. Did configuration successfully detect the dependency? Check the config
logs.
Kai
Am 22.02.25 um 05:15 schrieb Michael Katz via gdal-dev:
I am getting the following link errors when building my application in
MSVC++:
1>gdal.lib(gdalallregister.cpp.obj) : error LNK2019: unresolved external
symbol _GDALRegister_ECW referenced in function _GDALAllRegister@0
1>gdal.lib(gdalallregister.cpp.obj) : error LNK2019: unresolved external symbol
_GDALRegister_JP2ECW referenced in function _GDALAllRegister@0
1>gdal.lib(gdalallregister.cpp.obj) : error LNK2019: unresolved external symbol
_GDALRegister_MrSID referenced in function _GDALAllRegister@0
I am linking statically to GDAL built as a static library with vcpkg (which
builds without error). I am using a custom x86-windows.cmake file with vcpkg,
customized mainly to include MrSID and ECW functionality in GDAL. I have pasted
the cmake text at the bottom of this email.
From what I can see in the GDAL code, it's behaving as if
gdal/frmts/mrsid/mrsiddataset.cpp (which contains the function
GDALRegister_MrSID) wasn't compiled into the library, yet the following code in
frmts/gdalallregister.cpp was compiled.
#ifdef FRMT_mrsid GDALRegister_MrSID(); #endif
Can you help me understand how this could happen? What actually controls
whether gdal/frmts/mrsid/mrsiddataset.cpp gets compiled into the library?
--- x86-windows.cmake:
set(VCPKG_TARGET_ARCHITECTURE x86) set(VCPKG_CRT_LINKAGE static)
set(VCPKG_LIBRARY_LINKAGE static) set(VCPKG_BUILD_TYPE release)
set(ENV{CMAKE_WINDOWS_KITS_10_DIR} "C:\\Program Files (x86)\\Windows Kits\\10")
set(VCPKG_CMAKE_CONFIGURE_OPTIONS "-DCMAKE_WINDOWS_KITS_10_DIR=C:\\Program
Files (x86)\\Windows Kits\\10") set(VCPKG_ENV_PASSTHROUGH
CMAKE_WINDOWS_KITS_10_DIR)
# CMAKE_CURRENT_LIST_DIR is the triplets directory # such as
C:/Users/michael.katz/Documents/vcpkg/triplets message( STATUS
"\n\n-----------------------CMAKE_CURRENT_LIST_DIR =
${CMAKE_CURRENT_LIST_DIR}\n\n" )
if (PORT MATCHES "gdal") string( CONCAT x "
\"-DMRSID_INCLUDE_DIR=${CMAKE_CURRENT_LIST_DIR}/../sdk/MrSID_DSDK-9.5.5.5244-win32-vc17/Raster_DSDK/include\""
"
\"-DMRSID_LIBRARY=${CMAKE_CURRENT_LIST_DIR}/../sdk/MrSID_DSDK-9.5.5.5244-win32-vc17/Raster_DSDK/lib/lti_dsdk.lib\""
" \"-DGDAL_USE_MRSID=ON\"" " \"-DFRMT_mrsid=ON\"" "
\"-DECW_INCLUDE_DIR=${CMAKE_CURRENT_LIST_DIR}/../sdk/ecw/Hexagon/ERDAS_ECW_JPEG_2000_SDK_5.5.0/Desktop_Read-Only/include\""
"
\"-DECW_LIBRARY=${CMAKE_CURRENT_LIST_DIR}/../sdk/ecw/Hexagon/ERDAS_ECW_JPEG_2000_SDK_5.5.0/Desktop_Read-Only/lib/vc141/Win32/NCSEcw.lib\""
" \"-DGDAL_USE_ECW=ON\"" " \"-DFRMT_ecw=ON\"" )
set(VCPKG_CMAKE_CONFIGURE_OPTIONS "${VCPKG_CMAKE_CONFIGURE_OPTIONS} ${x}" )
set(VCPKG_CXX_FLAGS "${VCPKG_CXX_FLAGS} -DFRMT_mrsid=ON") set(VCPKG_C_FLAGS
"${VCPKG_C_FLAGS} -DFRMT_mrsid=ON") set(VCPKG_CXX_FLAGS "${VCPKG_CXX_FLAGS}
-DFRMT_ecw=ON") set(VCPKG_C_FLAGS "${VCPKG_C_FLAGS} -DFRMT_ecw=ON") endif()
message( STATUS "\n\n-----------------------VCPKG_CMAKE_CONFIGURE_OPTIONS =
${VCPKG_CMAKE_CONFIGURE_OPTIONS}\n\n" )
message( STATUS "\n\n-----------------------FEATURES = ${FEATURES}\n\n" )
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David KlausCarlson Software
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