How do i use poppler lib in Qt quick application.

[NIvil Wilson]

@jsulm
sir,
the result for the command file /usr/local/lib//libpoppler-qt5.so.1 is
/usr/local/lib//libpoppler-qt5.so.1: symbolic link to libpoppler-qt5.so.1.27.0

[NIvil Wilson]

@SGaist
sir, i tried that too but the same problem occurs

[SGaist]

@NIvil-Wilson said in How do i use poppler lib in Qt quick application.:

@jsulm
sir,
the result for the command file /usr/local/lib//libpoppler-qt5.so.1 is
/usr/local/lib//libpoppler-qt5.so.1: symbolic link to libpoppler-qt5.so.1.27.0

Check that file then.

Did you ensure that cmake is finding your cross-compiled version and not the one from your system ?

[NIvil Wilson]

@SGaist
sir,
yes i ensured that the cmake is finding cross-compiled version and not the one from the system .
i stored the cross-compiled version in an explicit dedicated folder and the same message appears.
please help

[SGaist]

Did you check the architecture of your cross-compiled library ?

[NIvil Wilson]

@SGaist
sir ,
the architecture of cross-compiled library is given below.

readelf -h libpoppler-qt5.so.1.27.0
ELF Header:
Magic: 7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00
Class: ELF64
Data: 2's complement, little endian
Version: 1 (current)
OS/ABI: UNIX - System V
ABI Version: 0
Type: DYN (Shared object file)
Machine: Advanced Micro Devices X86-64
Version: 0x1
Entry point address: 0x334f0
Start of program headers: 64 (bytes into file)
Start of section headers: 14323992 (bytes into file)
Flags: 0x0
Size of this header: 64 (bytes)
Size of program headers: 56 (bytes)
Number of program headers: 11
Size of section headers: 64 (bytes)
Number of section headers: 39
Section header string table index: 38

[SGaist]

@NIvil-Wilson said in How do i use poppler lib in Qt quick application.:

Machine: Advanced Micro Devices X86-64

Is your device running on a x86_64 machine ?

[NIvil Wilson]

@SGaist said in How do i use poppler lib in Qt quick application.:

x86_64

uname -a
Linux nivilwilsonp-desktop 5.8.0-48-generic #54~20.04.1-Ubuntu SMP Sat Mar 20 13:40:25 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

[SGaist]

Your desktop machine is.

I meant the target that runs Android. In any case, if it's ARM, libpoppler was not cross-compiled.

[NIvil Wilson]

@SGaist
sir,
the target device is ARM.could you give me instructions to cross compile libpoppler for ARM.

[SGaist]

What did you do to build poppler until now ?

[NIvil Wilson]

@SGaist
sir,
i used the settings given below to cross compile poppler library

if(NOT DEFINED CMAKE_CROSSCOMPILING)
set(CMAKE_CROSSCOMPILING "TRUE")
endif()

set(CMAKE_SYSTEM_NAME Android)
set(CMAKE_SYSTEM_VERSION 21) # API level
set(CMAKE_ANDROID_ARCH_ABI arm64-v8a)
set(CMAKE_ANDROID_NDK /home/nivilwilsonp/Android/Sdk/ndk/21.3.6528147)
set(CMAKE_ANDROID_STL_TYPE c++_shared)

[SGaist]

You might want to check here for how they build it for Androïd.

[NIvil Wilson]

@SGaist
sir, i tried to compile poppler for android arm64-v8a but it always compiled to "x86_64".

[SGaist]

Did you follow the example I linked ?

[NIvil Wilson]

@SGaist
sir, i tried it many times .i changed the architecture and tried many times but it only compile to x86_64 architecture only.I think this is related to configuration mistake that i made cmake compilation process. sorry for my bad english .google translate help me very much these days.

[SGaist]

What did you do exactly for your latest try ?

[NIvil Wilson]

@SGaist
sir, i couldnt understant this line " CFLAGS=-std=gnu99 STANDALONE_EXTRA="--arch arm64" /opt/helpers/build-standalone " which is in the link you given click here

[SGaist]

The line contains the instructions to configure, build and install freetype for Android..

[NIvil Wilson]

@SGaist
sir,

cmake -G Ninja .. -DCMAKE_TOOLCHAIN_FILE=~/Desktop/c++/poppler-21.06.1/build.cmake

contents of CMakeError.log

Determining if the function fseek64 exists failed with the following output:
Change Dir: /home/nivilwilsonp/Desktop/c++/poppler-21.06.1/build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/ninja cmTC_8bd25 && [1/2] Building C object CMakeFiles/cmTC_8bd25.dir/CheckFunctionExists.c.o
[2/2] Linking C executable cmTC_8bd25
FAILED: cmTC_8bd25
: && /home/nivilwilsonp/Android/Sdk/ndk/21.3.6528147/toolchains/llvm/prebuilt/linux-x86_64/bin/clang --target=aarch64-none-linux-android21 -Wall -std=c99 -D_DEFAULT_SOURCE -DCHECK_FUNCTION_EXISTS=fseek64 -g -funwind-tables -no-canonical-prefixes -fexceptions -fPIE -pie -Wl,--gc-sections CMakeFiles/cmTC_8bd25.dir/CheckFunctionExists.c.o -o cmTC_8bd25 -latomic -lm && :
CMakeFiles/cmTC_8bd25.dir/CheckFunctionExists.c.o: In function main': /usr/share/cmake-3.16/Modules/CheckFunctionExists.c:17: undefined reference to fseek64'
clang: error: linker command failed with exit code 1 (use -v to see invocation)
ninja: build stopped: subcommand failed.

Determining if the function ftell64 exists failed with the following output:
Change Dir: /home/nivilwilsonp/Desktop/c++/poppler-21.06.1/build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/ninja cmTC_5f037 && [1/2] Building C object CMakeFiles/cmTC_5f037.dir/CheckFunctionExists.c.o
[2/2] Linking C executable cmTC_5f037
FAILED: cmTC_5f037
: && /home/nivilwilsonp/Android/Sdk/ndk/21.3.6528147/toolchains/llvm/prebuilt/linux-x86_64/bin/clang --target=aarch64-none-linux-android21 -Wall -std=c99 -D_DEFAULT_SOURCE -DCHECK_FUNCTION_EXISTS=ftell64 -g -funwind-tables -no-canonical-prefixes -fexceptions -fPIE -pie -Wl,--gc-sections CMakeFiles/cmTC_5f037.dir/CheckFunctionExists.c.o -o cmTC_5f037 -latomic -lm && :
CMakeFiles/cmTC_5f037.dir/CheckFunctionExists.c.o: In function main': /usr/share/cmake-3.16/Modules/CheckFunctionExists.c:17: undefined reference to ftell64'
clang: error: linker command failed with exit code 1 (use -v to see invocation)
ninja: build stopped: subcommand failed.

Performing C SOURCE FILE Test HAVE_NDIR_H failed with the following output:
Change Dir: /home/nivilwilsonp/Desktop/c++/poppler-21.06.1/build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/ninja cmTC_53db5 && [1/2] Building C object CMakeFiles/cmTC_53db5.dir/src.c.o
FAILED: CMakeFiles/cmTC_53db5.dir/src.c.o
/home/nivilwilsonp/Android/Sdk/ndk/21.3.6528147/toolchains/llvm/prebuilt/linux-x86_64/bin/clang --target=aarch64-none-linux-android21 -Wall -std=c99 -D_DEFAULT_SOURCE -DHAVE_NDIR_H -g -funwind-tables -no-canonical-prefixes -fexceptions -o CMakeFiles/cmTC_53db5.dir/src.c.o -c src.c
src.c:1:10: fatal error: 'ndir.h' file not found
#include <ndir.h>
^~~~~~~~
1 error generated.
ninja: build stopped: subcommand failed.

Source file was:
#include <ndir.h>

int main(int argc, char argv[])
{
DIR d = 0;
return 0;
}

Performing C SOURCE FILE Test HAVE_SYS_DIR_H failed with the following output:
Change Dir: /home/nivilwilsonp/Desktop/c++/poppler-21.06.1/build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/ninja cmTC_4a64d && [1/2] Building C object CMakeFiles/cmTC_4a64d.dir/src.c.o
FAILED: CMakeFiles/cmTC_4a64d.dir/src.c.o
/home/nivilwilsonp/Android/Sdk/ndk/21.3.6528147/toolchains/llvm/prebuilt/linux-x86_64/bin/clang --target=aarch64-none-linux-android21 -Wall -std=c99 -D_DEFAULT_SOURCE -DHAVE_SYS_DIR_H -g -funwind-tables -no-canonical-prefixes -fexceptions -o CMakeFiles/cmTC_4a64d.dir/src.c.o -c src.c
src.c:1:10: fatal error: 'sys/dir.h' file not found
#include <sys/dir.h>
^~~~~~~~~~~
1 error generated.
ninja: build stopped: subcommand failed.

Source file was:
#include <sys/dir.h>

int main(int argc, char argv[])
{
DIR d = 0;
return 0;
}

Performing C SOURCE FILE Test HAVE_SYS_NDIR_H failed with the following output:
Change Dir: /home/nivilwilsonp/Desktop/c++/poppler-21.06.1/build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/ninja cmTC_5a9f7 && [1/2] Building C object CMakeFiles/cmTC_5a9f7.dir/src.c.o
FAILED: CMakeFiles/cmTC_5a9f7.dir/src.c.o
/home/nivilwilsonp/Android/Sdk/ndk/21.3.6528147/toolchains/llvm/prebuilt/linux-x86_64/bin/clang --target=aarch64-none-linux-android21 -Wall -std=c99 -D_DEFAULT_SOURCE -DHAVE_SYS_NDIR_H -g -funwind-tables -no-canonical-prefixes -fexceptions -o CMakeFiles/cmTC_5a9f7.dir/src.c.o -c src.c
src.c:1:10: fatal error: 'sys/ndir.h' file not found
#include <sys/ndir.h>
^~~~~~~~~~~~
1 error generated.
ninja: build stopped: subcommand failed.

Source file was:
#include <sys/ndir.h>

int main(int argc, char argv[])
{
DIR d = 0;
return 0;
}