[gdal-dev] Build GDAL 3.5 for iOS error: forward declaration of 'stat64'
Nik Sands
nik at nixanz.com
Tue Jul 5 04:18:08 PDT 2022
Hi Even,
Thanks again for your advice. The debug message did produce what I believe was the expected output as follows:
CMake Warning at cmake/helpers/configure.cmake:175 (message):
CMAKE_SYSTEM_NAME=iOS
Making the suggested change to the configure.cmake file (line 175 in the version 3.5 distribution I have) and re-building certainly progresses further than my previous build attempt. I now get the errors in the ouput listed below. Note that I found one other location in the same configure.cmake file where it was checking for “Darwin” and I made the same change to that line, but it made no difference to these errors below.
Cheers,
Nik.
==========
…
…
[ 7%] Building CXX object port/CMakeFiles/cpl.dir/cpl_vsil_unix_stdio_64.cpp.o
/Users/nsands/Documents/Development/3rdParty/GDAL3/gdal-3.5.0/port/cpl_vsil_unix_stdio_64.cpp:139:23: error: use of undeclared identifier 'ftell64'
static_assert( sizeof(VSI_FTELL64(nullptr)) == sizeof(vsi_l_offset),
^
/Users/nsands/Documents/Development/3rdParty/GDAL3/gdal-3.5.0/build/port/cpl_config.h:152:21: note: expanded from macro 'VSI_FTELL64'
#define VSI_FTELL64 ftell64
^
/Users/nsands/Documents/Development/3rdParty/GDAL3/gdal-3.5.0/port/cpl_vsil_unix_stdio_64.cpp:315:25: error: use of undeclared identifier 'fseek64'
const int nResult = VSI_FSEEK64( fp, nOffsetIn, nWhence );
^
/Users/nsands/Documents/Development/3rdParty/GDAL3/gdal-3.5.0/build/port/cpl_config.h:149:21: note: expanded from macro 'VSI_FSEEK64'
#define VSI_FSEEK64 fseek64
^
/Users/nsands/Documents/Development/3rdParty/GDAL3/gdal-3.5.0/port/cpl_vsil_unix_stdio_64.cpp:355:25: error: use of undeclared identifier 'ftell64'
m_nOffset = VSI_FTELL64( fp );
^
/Users/nsands/Documents/Development/3rdParty/GDAL3/gdal-3.5.0/build/port/cpl_config.h:152:21: note: expanded from macro 'VSI_FTELL64'
#define VSI_FTELL64 ftell64
^
/Users/nsands/Documents/Development/3rdParty/GDAL3/gdal-3.5.0/port/cpl_vsil_unix_stdio_64.cpp:422:13: error: use of undeclared identifier 'fseek64'
if( VSI_FSEEK64( fp, m_nOffset, SEEK_SET ) != 0 )
^
/Users/nsands/Documents/Development/3rdParty/GDAL3/gdal-3.5.0/build/port/cpl_config.h:149:21: note: expanded from macro 'VSI_FSEEK64'
#define VSI_FSEEK64 fseek64
^
/Users/nsands/Documents/Development/3rdParty/GDAL3/gdal-3.5.0/port/cpl_vsil_unix_stdio_64.cpp:456:35: error: use of undeclared identifier 'ftell64'
vsi_l_offset nNewOffset = VSI_FTELL64( fp );
^
/Users/nsands/Documents/Development/3rdParty/GDAL3/gdal-3.5.0/build/port/cpl_config.h:152:21: note: expanded from macro 'VSI_FTELL64'
#define VSI_FTELL64 ftell64
^
/Users/nsands/Documents/Development/3rdParty/GDAL3/gdal-3.5.0/port/cpl_vsil_unix_stdio_64.cpp:484:13: error: use of undeclared identifier 'fseek64'
if( VSI_FSEEK64( fp, m_nOffset, SEEK_SET ) != 0 )
^
/Users/nsands/Documents/Development/3rdParty/GDAL3/gdal-3.5.0/build/port/cpl_config.h:149:21: note: expanded from macro 'VSI_FSEEK64'
#define VSI_FSEEK64 fseek64
^
/Users/nsands/Documents/Development/3rdParty/GDAL3/gdal-3.5.0/port/cpl_vsil_unix_stdio_64.cpp:532:12: error: use of undeclared identifier 'ftruncate64'; did you mean 'ftruncate'?
return VSI_FTRUNCATE64( fileno(fp), nNewSize );
^~~~~~~~~~~~~~~
ftruncate
/Users/nsands/Documents/Development/3rdParty/GDAL3/gdal-3.5.0/build/port/cpl_config.h:146:25: note: expanded from macro 'VSI_FTRUNCATE64'
#define VSI_FTRUNCATE64 ftruncate64
^
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS15.5.sdk/usr/include/unistd.h:611:6: note: 'ftruncate' declared here
int ftruncate(int, off_t);
^
/Users/nsands/Documents/Development/3rdParty/GDAL3/gdal-3.5.0/port/cpl_vsil_unix_stdio_64.cpp:645:16: error: use of undeclared identifier 'fopen64'; did you mean 'fopen'?
FILE *fp = VSI_FOPEN64( pszFilename, pszAccess );
^~~~~~~~~~~
fopen
/Users/nsands/Documents/Development/3rdParty/GDAL3/gdal-3.5.0/build/port/cpl_config.h:143:21: note: expanded from macro 'VSI_FOPEN64'
#define VSI_FOPEN64 fopen64
^
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS15.5.sdk/usr/include/stdio.h:153:7: note: 'fopen' declared here
FILE *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_2_0, __DARWIN_ALIAS(fopen));
^
/Users/nsands/Documents/Development/3rdParty/GDAL3/gdal-3.5.0/port/cpl_vsil_unix_stdio_64.cpp:793:22: error: variable has incomplete type 'struct statvfs64'
struct statvfs64 buf;
^
/Users/nsands/Documents/Development/3rdParty/GDAL3/gdal-3.5.0/port/cpl_vsil_unix_stdio_64.cpp:793:12: note: forward declaration of 'statvfs64'
struct statvfs64 buf;
^
9 errors generated.
make[2]: *** [port/CMakeFiles/cpl.dir/cpl_vsil_unix_stdio_64.cpp.o] Error 1
make[1]: *** [port/CMakeFiles/cpl.dir/all] Error 2
make: *** [all] Error 2
==========
> On 5 Jul 2022, at 5:00 pm, Even Rouault <even.rouault at spatialys.com <mailto:even.rouault at spatialys.com>> wrote:
>
> Nik,
>
> in cmake/helpers/configure.cmake, there's a special case of Darwin at line 183 in master
>
> if (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
>
> Can you test if replacing it with
>
> if (${CMAKE_SYSTEM_NAME} MATCHES "Darwin" OR ${CMAKE_SYSTEM_NAME} MATCHES "iOS")
>
> works better? (I assume CMAKE_SYSTEM_NAME = iOS from https://cmake.org/cmake/help/latest/variable/IOS.html <https://cmake.org/cmake/help/latest/variable/IOS.html> , but you might want to add a 'message(WARNING "CMAKE_SYSTEM_NAME=${CMAKE_SYSTEM_NAME}")' debug statement to check
>
> Even
>
> Le 05/07/2022 à 06:14, Nik Sands a écrit :
>> Hi GDAL devs,
>>
>> As per my earlier emails, I’m attempting to build GDAL 3.5 for iOS. The complete process (so far) for this is below, at the end of this email.
>>
>> A quick summary of some relevant points is:
>> • Using a 3rd party cmake toolchain file which caters for iOS, macOS (as well as other Apple OSs) and can even build a fat binary that works for both iOS device and simulator (arm64/x86_64).
>> • Using a 3rd party mirror of SQLite which includes cmake configuration, so that I can incorporate the same methodology to build iOS SQLite that I’m using for other dependencies (the standard Apple bundled SQLite throws an error when building GDAL)
>>
>> The 'cmake <options> ..’ succeeds to configure the GDAL build. However, when I run ‘cmake —build .’ I get the following output:
>>
>> ==========
>> [ 0%] Built target generate_gdal_version_h
>> [ 0%] Building CXX object apps/CMakeFiles/appslib.dir/gdalinfo_lib.cpp.o
>> [ 0%] Building CXX object apps/CMakeFiles/appslib.dir/gdalbuildvrt_lib.cpp.o
>> [ 1%] Building CXX object apps/CMakeFiles/appslib.dir/gdal_grid_lib.cpp.o
>> /Users/nsands/Documents/Development/3rdParty/GDAL3/gdal-3.5.0/apps/gdal_grid_lib.cpp:1213:26: error: variable has incomplete type 'VSIStatBufL' (aka 'stat64')
>> VSIStatBufL sStat;
>> ^
>> /Users/nsands/Documents/Development/3rdParty/GDAL3/gdal-3.5.0/port/cpl_vsi.h:195:16: note: forward declaration of 'stat64'
>> typedef struct VSI_STAT64_T VSIStatBufL;
>> ^
>> /Users/nsands/Documents/Development/3rdParty/GDAL3/gdal-3.5.0/build/port/cpl_config.h:41:22: note: expanded from macro 'VSI_STAT64_T'
>> #define VSI_STAT64_T stat64
>> ^
>> 1 error generated.
>> make[2]: *** [apps/CMakeFiles/appslib.dir/gdal_grid_lib.cpp.o] Error 1
>> make[1]: *** [apps/CMakeFiles/appslib.dir/all] Error 2
>> make: *** [all] Error 2
>> ==========
>>
>> I found a GDAL bug that appears to be related, but it was closed as ‘fixed’ about 8 years ago:
>> https://trac.osgeo.org/gdal/ticket/1005 <https://trac.osgeo.org/gdal/ticket/1005>
>>
>> This may also be relevant:
>> https://www.spinics.net/lists/dash/msg02117.html
>>
>> But this is somewhat beyond my (lack of) expertise to resolve. Does anybody have any suggestions for resolving this issue?
>>
>> Cheers,
>> Nik.
>>
>>
>> COMPLETE PROCESS TO BUILD iOS GDAL (so far):
>>
>>
>> Install Homebrew package manager:
>> /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
>>
>> Install cmake using Homebrew:
>> brew install cmakecmake --build . --target install
>>
>> Install ios.toolchain.cmake:
>> Download from: https://github.com/leetal/ios-cmake
>> Install at: $HOME/Documents/Development/3rdParty/ios-cmake-master/ios.toolchain.cmake
>>
>> Environment Variables:
>> export PREFIX=$HOME/build/arm64
>> export CMTOOLCHAIN=$HOME/Documents/Development/3rdParty/ios-cmake-master/ios.toolchain.cmake
>>
>> Build SQLite:
>> Download CMAKE-compatible SQLite amalgamation from:
>> https://github.com/azadkuh/sqlite-amalgamation
>>
>> cd sqlite-amalgamation-master
>> mkdir build
>> cd build
>> cmake -DCMAKE_TOOLCHAIN_FILE=$CMTOOLCHAIN -DPLATFORM=OS64 -DCMAKE_INSTALL_PREFIX=$PREFIX -DSQLITE_ENABLE_RTREE=ON ..
>> cmake --build .
>> cmake --build . --target install
>>
>> Build Proj:
>> cd proj-{VERSION}
>> mkdir build
>> cd build
>> cmake -DCMAKE_TOOLCHAIN_FILE=$CMTOOLCHAIN -DPLATFORM=OS64 -DCMAKE_INSTALL_PREFIX=$PREFIX -DENABLE_TIFF=OFF -DENABLE_CURL=OFF -DBUILD_PROJSYNC=OFF -DSQLITE3_INCLUDE_DIR=$PREFIX/include -DSQLITE3_LIBRARY=$PREFIX/lib/libsqlite3.a ..
>> cmake --build .
>> cmake --build . --target install
>>
>> Build GDAL:
>> (Specifying the path to PROJ is not required because cmake automatically adds CMAKE_INSTALL_PREFIX to CMAKE_SYSTEM_PREFIX_PATH
>>
>> cd gdal-{VERSION}
>> mkdir build
>> cd build
>> cmake -DCMAKE_TOOLCHAIN_FILE=$CMTOOLCHAIN -DPLATFORM=OS64 -DCMAKE_INSTALL_PREFIX=$PREFIX/arm64 -DBUILD_APPS=OFF -DBUILD_SHARED_LIBS=OFF -DBUILD_PYTHON_BINDINGS=OFF -DSQLITE3_INCLUDE_DIR=$PREFIX/include -DSQLITE3_LIBRARY=$PREFIX/lib/libsqlite3.a -DCMAKE_BUILD_TYPE=Release ..
>> cmake --build .
>> cmake --build . --target install
>> _______________________________________________
>> gdal-dev mailing list
>> gdal-dev at lists.osgeo.org
>> https://lists.osgeo.org/mailman/listinfo/gdal-dev
>
> --
> http://www.spatialys.com <http://www.spatialys.com/>
> My software is free, but my time generally not.
>
========================================================
NIK SANDS
Line Tamer | Time Traveller | Space Cadet
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