[gdal-dev] About installing EXPAT

[Even Rouault]

Add -DCMAKE_PREFIX_PATH="$CONDA_PREFIX" to your CMake invokation 
(assuming your have activate your Conda environment, so CONDA_PREFIX is set)

My suggestion is inspired from our CI Conda based Windows build: 
https://github.com/OSGeo/gdal/blob/7fc7bb59d2b2de1dca03dd18c14005f2b64adb49/.github/workflows/cmake_builds.yml#L463

You should also probably clear your existing CMakeCache.txt before doing 
the abve, to avoid mixing with variables set from your previous experiments

Le 25/09/2023 à 16:21, Abel Pau a écrit :
>
> Hi Even,
>
> I really appreciate your help.
>
> I prefer going by the easy way so once installed miniconda and applied 
> all the described in download.htm.
>
> To have the EXPAT installed I do that: conda install expat
>
> And the, when I try the cmake .. some issues appear
>
> D:\GitHub-repository\GDAL\build>cmake ..
>
> -- Selecting Windows SDK version 10.0.19041.0 to target Windows 
> 10.0.19045.
>
> -- GDAL_VERSION          = 3.8.0dev
>
> -- GDAL_ABI_FULL_VERSION = 38
>
> -- GDAL_SOVERSION        =
>
> -- Could NOT find MSSQL_NCLI (missing: MSSQL_NCLI_LIBRARY 
> MSSQL_NCLI_INCLUDE_DIR MSSQL_NCLI_VERSION)
>
> -- Could NOT find MSSQL_ODBC (missing: MSSQL_ODBC_LIBRARY 
> MSSQL_ODBC_INCLUDE_DIR MSSQL_ODBC_VERSION)
>
> -- Could NOT find MySQL (missing: MYSQL_LIBRARY MYSQL_INCLUDE_DIR)
>
> -- Could NOT find CURL (missing: CURL_LIBRARY CURL_INCLUDE_DIR)
>
> -- Could NOT find Iconv (missing: Iconv_LIBRARY Iconv_CHARSET_LIBRARY 
> Iconv_INCLUDE_DIR)
>
> -- Could NOT find LibXml2 (missing: LIBXML2_LIBRARY LIBXML2_INCLUDE_DIR)
>
> -- Could NOT find EXPAT (missing: EXPAT_DIR)
>
> -- Could NOT find EXPAT (missing: EXPAT_LIBRARY EXPAT_INCLUDE_DIR)
>
> CMake Error at cmake/helpers/CheckDependentLibraries.cmake:202 (message):
>
>   Configured to use EXPAT, but not found
>
> Call Stack (most recent call first):
>
> cmake/helpers/CheckDependentLibraries.cmake:348 (gdal_check_package)
>
>   gdal.cmake:265 (include)
>
>   CMakeLists.txt:280 (include)
>
> -- Configuring incomplete, errors occurred!
>
> D:\GitHub-repository\GDAL\build>
>
> There is something I don’t understand because I don’t know what to do now.
>
> *Why after doing an gdal_master_env and installing everything and 
> expat it doesn’t work?*
>
> Once again, I appreciate your help :)
>
> *De:*Even Rouault <even.rouault at spatialys.com>
> *Enviado el:* dilluns, 25 de setembre de 2023 14:30
> *Para:* Abel Pau <a.pau at creaf.uab.cat>; gdal dev 
> <gdal-dev at lists.osgeo.org>
> *Asunto:* Re: [gdal-dev] About installing EXPAT
>
> Abel,
>
>     In Cmakefile.txt of the project I’ve configured this (below #
>     Developer may want to specify some variable to find proper version.):
>
>     set(EXPAT_INCLUDE_DIR "D:/GitHub-repository/libexpat/expat/lib")
>
>     set(EXPAT_LIBRARY
>     "D:/GitHub-repository/libexpat/expat/build/Debug/libexpatd.lib")
>
> Is this .lib a static library, or an import library of the .dll ? My 
> assumption (I may be wrong) is that it is an import lib of the .dll. 
> In which case you must not set EXPAT_USE_STATIC_LIBS
>
>     set(EXPAT_LIBRARY
>     "D:/GitHub-repository/libexpat/expat/build/Debug/libexpatd.dll")
>
> That won't work. This needs to be a .lib
>
> You'd better run cmake again on expat with a 
> -DCMAKE_INSTALL_PREFIX=d:/install-prefix   and run "cmake --build . 
> --target install", and then when building GDAL, use "cmake .. 
> -DCMAKE_PREFIX_PATH=d:/install-prefix", so it automatically configures 
> things from what is found in d:/install-prefix
>
> You could also potentially use vcpkg or conda to install GDAL 
> dependencies instead of building them from scratch: 
> https://gdal.org/download.html
>
> Even
>
> -- 
> http://www.spatialys.com
> My software is free, but my time generally not.

-- 
http://www.spatialys.com
My software is free, but my time generally not.
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