[gdal-dev] Build GDAL 3.5 for iOS error: forward declaration of 'stat64'
Even Rouault
even.rouault at spatialys.com
Tue Jul 5 04:23:00 PDT 2022
(re-adding the list)
ok, it's a bit weird CMake detects symbols that are not available at
build time, but there might be some subtelties in iOS SDK
Can you try the following patch which basically forces to remap all
"foo64" functions to "foo". I assume that iOS Unix I/O is 64-bit enabled
by default...
diff --git a/cmake/helpers/configure.cmake b/cmake/helpers/configure.cmake
index c38604e23e..e5be264bf9 100644
--- a/cmake/helpers/configure.cmake
+++ b/cmake/helpers/configure.cmake
@@ -241,6 +241,20 @@ else ()
set(VSI_FTRUNCATE64 "ftruncate")
endif ()
+ if (${CMAKE_SYSTEM_NAME} MATCHES "iOS")
+ set(VSI_FOPEN64 "fopen")
+ set(VSI_FTRUNCATE64 "ftruncate")
+ set(VSI_FTELL64 "ftell")
+ set(VSI_FSEEK64 "fseek")
+ set(VSI_STAT64 stat)
+ set(VSI_STAT64_T stat)
+ unset(HAVE_FOPEN64)
+ unset(HAVE_FTRUNCATE64)
+ unset(HAVE_FTELL64)
+ unset(HAVE_FSEEK64)
+ unset(HAVE_STATVFS64)
+ endif()
+
set(UNIX_STDIO_64 TRUE)
set(INCLUDE_XLOCALE_H)
Le 05/07/2022 à 13:07, Nik Sands a écrit :
> 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>
>> 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 ${CMAKE_SYSTEM_NAME}
>> MATCHES "iOS")
>>
>> works better? (I assume CMAKE_SYSTEM_NAME = iOS from
>> https://cmake.org/cmake/help/latest/variable/IOS.html , but you might
>> want to add a 'message(WARNING
>> "CMAKE_SYSTEM_NAME=${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
>>>
>>> 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
>> My software is free, but my time generally not.
>>
>
>
> ========================================================
> NIK SANDS
> Line Tamer | Time Traveller | Space Cadet
>
--
http://www.spatialys.com
My software is free, but my time generally not.
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