Shared lib #184

MasterVitronic · 2021-04-02T20:00:23Z

Greetings, great job.
Any recommendations for building cfltk dynamically, currently build libcfltk.a, but would like a libcfltk.so instead
I tried with -DOPTION_BUILD_SHARED_LIBS=ON but it only works for fltk, cfltk stays the same.

The text was updated successfully, but these errors were encountered:

MoAlyousef · 2021-04-02T22:10:22Z

Thank you :)

Can you can try the ˋ-DCFLTK_BUILD_SHARED` flag when configuring cmake.

MasterVitronic · 2021-04-03T13:02:51Z

Any other recommendations you would like to give me, I have the following problem

cd /tmp/cfltk
root[/tmp/cfltk/bin]# cmake -B bin -S . \
-DCMAKE_BUILD_TYPE=Release \
-DOPTION_USE_SYSTEM_LIBPNG=OFF \
-DOPTION_USE_SYSTEM_LIBJPEG=OFF \
-DOPTION_USE_SYSTEM_ZLIB=OFF \
-DOPTION_USE_GL=OFF \
-DFLTK_BUILD_EXAMPLES=OFF \
-DFLTK_BUILD_TEST=OFF \
-DOPTION_USE_THREADS=ON \
-DOPTION_LARGE_FILE=ON \
-DOPTION_BUILD_HTML_DOCUMENTATION=OFF \
-DOPTION_BUILD_PDF_DOCUMENTATION=OFF \
-DCFLTK_BUILD_SHARED=ON \
-DOPTION_BUILD_SHARED_LIBS=ON

[ 49%] Building CXX object CMakeFiles/cfltk.dir/src/cfl_table.cpp.o
[ 49%] Building CXX object CMakeFiles/cfltk.dir/src/cfl_tree.cpp.o
[ 49%] Building CXX object CMakeFiles/cfltk.dir/src/cfl_surface.cpp.o
[ 49%] Building CXX object CMakeFiles/cfltk.dir/src/cfl_printer.cpp.o
[ 49%] Linking CXX shared library libcfltk.so
/usr/lib/gcc/x86_64-alpine-linux-musl/9.2.0/../../../../x86_64-alpine-linux-musl/bin/ld: fltk/lib/libfltk.a(Fl.cxx.o): relocation R_X86_64_PC32 against symbol `_ZN2Fl6focus_E' can not be used when making a shared object; recompile with -fPIC
/usr/lib/gcc/x86_64-alpine-linux-musl/9.2.0/../../../../x86_64-alpine-linux-musl/bin/ld: final link failed: bad value
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/cfltk.dir/build.make:402: libcfltk.so.0.16.0] Error 1
make[2]: Leaving directory '/tmp/cfltk/bin'
make[1]: *** [CMakeFiles/Makefile2:219: CMakeFiles/cfltk.dir/all] Error 2
make[1]: Leaving directory '/tmp/cfltk/bin'
make: *** [Makefile:130: all] Error 2

MoAlyousef · 2021-04-03T13:11:37Z

I have updated the CMakeLists.txt to add

set_target_properties(cfltk PROPERTIES POSITION_INDEPENDENT_CODE ON)

when building a shared library.

Can you try again after pulling the last changes?

MasterVitronic · 2021-04-03T13:27:15Z

similar result with the last commit , could you replicate this and see if I am doing something wrong?

cmake -B bin -S . \
-DCMAKE_BUILD_TYPE=Release \
-DOPTION_USE_SYSTEM_LIBPNG=ON \
-DOPTION_USE_SYSTEM_LIBJPEG=ON \
-DOPTION_USE_SYSTEM_ZLIB=ON \
-DOPTION_USE_GL=OFF \
-DFLTK_BUILD_EXAMPLES=OFF \
-DFLTK_BUILD_TEST=OFF \
-DOPTION_USE_THREADS=ON \
-DOPTION_LARGE_FILE=ON \
-DOPTION_BUILD_HTML_DOCUMENTATION=OFF \
-DOPTION_BUILD_PDF_DOCUMENTATION=OFF \
-DCFLTK_BUILD_SHARED=ON \
-DOPTION_BUILD_SHARED_LIBS=ON

make[2]: Leaving directory '/tmp/cfltk/bin'
[ 97%] Built target fluid
[ 97%] Building CXX object CMakeFiles/cfltk.dir/src/cfl_menu.cpp.o
[ 97%] Building CXX object CMakeFiles/cfltk.dir/src/cfl_dialog.cpp.o
[ 97%] Building CXX object CMakeFiles/cfltk.dir/src/cfl_valuator.cpp.o
[ 98%] Building CXX object CMakeFiles/cfltk.dir/src/cfl_browser.cpp.o
[ 98%] Building CXX object CMakeFiles/cfltk.dir/src/cfl_misc.cpp.o
[ 98%] Building CXX object CMakeFiles/cfltk.dir/src/cfl_image.cpp.o
[ 98%] Building CXX object CMakeFiles/cfltk.dir/src/cfl_draw.cpp.o
[ 99%] Building CXX object CMakeFiles/cfltk.dir/src/cfl_table.cpp.o
[ 99%] Building CXX object CMakeFiles/cfltk.dir/src/cfl_tree.cpp.o
[ 99%] Building CXX object CMakeFiles/cfltk.dir/src/cfl_surface.cpp.o
[ 99%] Building CXX object CMakeFiles/cfltk.dir/src/cfl_printer.cpp.o
[100%] Linking CXX shared library libcfltk.so
/usr/lib/gcc/x86_64-alpine-linux-musl/9.2.0/../../../../x86_64-alpine-linux-musl/bin/ld: cannot find -lfltk_z
/usr/lib/gcc/x86_64-alpine-linux-musl/9.2.0/../../../../x86_64-alpine-linux-musl/bin/ld: cannot find -lfltk_jpeg
/usr/lib/gcc/x86_64-alpine-linux-musl/9.2.0/../../../../x86_64-alpine-linux-musl/bin/ld: cannot find -lfltk_png
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/cfltk.dir/build.make:403: libcfltk.so.0.16.0] Error 1
make[2]: Leaving directory '/tmp/cfltk/bin'
make[1]: *** [CMakeFiles/Makefile2:147: CMakeFiles/cfltk.dir/all] Error 2
make[1]: Leaving directory '/tmp/cfltk/bin'
make: *** [Makefile:130: all] Error 2
root[/tmp/cfltk/bin]#

MoAlyousef · 2021-04-03T14:02:52Z

Sure will do. But it’ll be when I get back to my dev machine after the weekend.

MoAlyousef · 2021-04-03T22:48:46Z

I tried it on a VM, can you try the following invocation:

cmake -B bin -S . -DCMAKE_BUILD_TYPE=Release \
-DOPTION_USE_SYSTEM_LIBPNG=ON \
-DOPTION_USE_SYSTEM_LIBJPEG=ON \
-DOPTION_USE_SYSTEM_ZLIB=ON \
-DOPTION_USE_GL=OFF \
-DFLTK_BUILD_EXAMPLES=OFF \
-DFLTK_BUILD_TEST=OFF \
-DOPTION_USE_THREADS=ON \
-DOPTION_LARGE_FILE=ON \
-DOPTION_BUILD_HTML_DOCUMENTATION=OFF \
-DOPTION_BUILD_PDF_DOCUMENTATION=OFF \
-DCFLTK_BUILD_SHARED=ON \
-DCFLTK_LINK_IMAGES=OFF \
-DCMAKE_POSITION_INDEPENDENT_CODE=ON

Notice the last 3 cmake flags, also the removal of -DOPTION_BUILD_SHARED_LIBS=ON
This builds libfltk as static but libcfltk as dynamic with all the symbols of libfltk, so libfltk is no longer needed.

MasterVitronic · 2021-04-03T23:31:51Z

I compile without problem, but I don't link correctly, I haven't tested it yet, but this is what ldd shows me

vitronic [/tmp/CFLTK/bin]$ ls *.so*
libcfltk.so  libcfltk.so.0.16.0
vitronic [/tmp/CFLTK/bin]$ ldd libcfltk.so.0.16.0
	/lib/ld-musl-x86_64.so.1 (0x7febe8489000)
	libX11.so.6 => /usr/lib/libX11.so.6 (0x7febe80ec000)
	libXext.so.6 => /usr/lib/libXext.so.6 (0x7febe80d9000)
	libXinerama.so.1 => /usr/lib/libXinerama.so.1 (0x7febe80d4000)
	libXfixes.so.3 => /usr/lib/libXfixes.so.3 (0x7febe80cc000)
	libXcursor.so.1 => /usr/lib/libXcursor.so.1 (0x7febe80c0000)
	libXrender.so.1 => /usr/lib/libXrender.so.1 (0x7febe80b4000)
	libXft.so.2 => /usr/lib/libXft.so.2 (0x7febe809f000)
	libfontconfig.so.1 => /usr/lib/libfontconfig.so.1 (0x7febe8062000)
	libc.musl-x86_64.so.1 => /lib/ld-musl-x86_64.so.1 (0x7febe8489000)
	libxcb.so.1 => /usr/lib/libxcb.so.1 (0x7febe803b000)
	libfreetype.so.6 => /usr/lib/libfreetype.so.6 (0x7febe7f89000)
	libexpat.so.1 => /usr/lib/libexpat.so.1 (0x7febe7f66000)
	libuuid.so.1 => /lib/libuuid.so.1 (0x7febe7f5d000)
	libXau.so.6 => /usr/lib/libXau.so.6 (0x7febe7f58000)
	libXdmcp.so.6 => /usr/lib/libXdmcp.so.6 (0x7febe7f50000)
	libbz2.so.1 => /usr/lib/libbz2.so.1 (0x7febe7f41000)
	libpng16.so.16 => /usr/lib/libpng16.so.16 (0x7febe7f11000)
	libz.so.1 => /lib/libz.so.1 (0x7febe7ef7000)
	libbsd.so.0 => /usr/lib/libbsd.so.0 (0x7febe7ee1000)
Error relocating libcfltk.so.0.16.0: _ZN12Fl_BMP_ImageC1EPKc: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN14Fl_Help_Dialog8textsizeEi: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN14Fl_Help_Dialog4showEv: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN14Fl_Help_Dialog4loadEPKc: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN14Fl_Help_Dialog8textsizeEv: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN12Fl_PNG_ImageC1EPKc: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN14Fl_Help_DialogD1Ev: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN12Fl_PNG_ImageC1EPKcPKhi: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN19Fl_SVG_File_Surface4fileEv: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN14Fl_Help_Dialog7visibleEv: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN13Fl_JPEG_ImageC1EPKcPKh: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN12Fl_SVG_ImageC1EPKcS1_: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN14Fl_Help_Dialog6resizeEiiii: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN14Fl_Help_Dialog4hideEv: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN12Fl_GIF_ImageC1EPKc: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN14Fl_Help_Dialog1xEv: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN19Fl_SVG_File_SurfaceC1EiiP8_IO_FILEPFiS1_E: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN14Fl_Help_Dialog8positionEii: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN12Fl_BMP_ImageC1EPKcPKh: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN12Fl_PNM_ImageC1EPKc: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN13Fl_JPEG_ImageC1EPKc: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN12Fl_GIF_ImageC1EPKcPKh: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN14Fl_Help_Dialog5valueEPKc: symbol not found
Error relocating libcfltk.so.0.16.0: _Z18fl_register_imagesv: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN14Fl_Help_Dialog1hEv: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN14Fl_Help_Dialog1wEv: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN14Fl_Help_DialogC1Ev: symbol not found
Error relocating libcfltk.so.0.16.0: _ZNK14Fl_Help_Dialog5valueEv: symbol not found
Error relocating libcfltk.so.0.16.0: _ZN14Fl_Help_Dialog1yEv: symbol not found

Needless to say I am very grateful for your attention, I will keep trying and I will keep you informed.

MoAlyousef · 2021-04-04T00:00:43Z

Hmm It seems shared libcfltk won't work with system image libs. I'll need to investigate further.

cmake -B bin -S . -DCMAKE_BUILD_TYPE=Release -DOPTION_USE_SYSTEM_LIBPNG=OFF -DOPTION_USE_SYSTEM_LIBJPEG=OFF -DOPTION_USE_SYSTEM_ZLIB=OFF -DOPTION_USE_GL=OFF -DFLTK_BUILD_EXAMPLES=OFF -DFLTK_BUILD_TEST=OFF -DOPTION_USE_THREADS=ON -DOPTION_LARGE_FILE=ON -DOPTION_BUILD_HTML_DOCUMENTATION=OFF -DOPTION_BUILD_PDF_DOCUMENTATION=OFF -DCFLTK_BUILD_SHARED=ON -DCFLTK_LINK_IMAGES=OFF -DCMAKE_POSITION_INDEPENDENT_CODE=ON

AlexanderZhirov · 2022-07-04T08:57:27Z

When building a dynamic library, I get the error of not having a PNG library:

Build log

$ cmake -B . -S ../cfltk/ \ -DCMAKE_BUILD_TYPE=Release \ -DOPTION_USE_SYSTEM_LIBJPEG=OFF \ -DOPTION_USE_SYSTEM_ZLIB=OFF \ -DOPTION_USE_GL=OFF \ -DFLTK_BUILD_EXAMPLES=OFF \ -DFLTK_BUILD_TEST=OFF \ -DOPTION_USE_THREADS=ON \ -DOPTION_LARGE_FILE=ON \ -DOPTION_BUILD_HTML_DOCUMENTATION=OFF \ -DOPTION_BUILD_PDF_DOCUMENTATION=OFF \ -DCFLTK_BUILD_SHARED=ON

-- The C compiler identification is GNU 12.1.1
-- The CXX compiler identification is GNU 12.1.1
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Looking for sys/types.h
-- Looking for sys/types.h - found
-- Looking for stdint.h
-- Looking for stdint.h - found
-- Looking for stddef.h
-- Looking for stddef.h - found
-- Check size of short
-- Check size of short - done
-- Check size of int
-- Check size of int - done
-- Check size of long
-- Check size of long - done
-- Check size of long long
-- Check size of long long - done
-- Found PkgConfig: /usr/bin/pkg-config (found version "0.29.2")
-- Looking for POSIX compatible scandir
-- POSIX compatible scandir - found
-- Could NOT find Doxygen (missing: DOXYGEN_EXECUTABLE)
-- Found ZLIB: /usr/lib/libz.so (found version "1.2.11")
-- Found PNG: /usr/lib/libpng.so (found version "1.6.37")
-- Looking for png.h
-- Looking for png.h - found
-- Found X11: /usr/local/include
-- Looking for XOpenDisplay in /usr/lib/libX11.so;/usr/lib/libXext.so
-- Looking for XOpenDisplay in /usr/lib/libX11.so;/usr/lib/libXext.so - found
-- Looking for gethostbyname
-- Looking for gethostbyname - found
-- Looking for connect
-- Looking for connect - found
-- Looking for remove
-- Looking for remove - found
-- Looking for shmat
-- Looking for shmat - found
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE

-- Configuration Summary for FLTK 1.4.0 generated by CMake 3.23.1 --

-- The following OPTIONAL packages have been found:

ZLIB
PNG

-- The following OPTIONAL packages have not been found:

Doxygen

-- Static libraries will be built in /home/alexander/programming/c/build_cfltk/fltk/lib
-- Shared libraries will not be built (set OPTION_BUILD_SHARED_LIBS=ON to build)
-- Example programs will not be built (set FLTK_BUILD_EXAMPLES=ON to build)
-- Image Libraries: JPEG = Builtin
-- PNG = System
-- ZLIB = Builtin
-- Use Wayland: No
-- Use Pango: No
-- Use Xft: Yes
-- Cairo support: No

-- End of Configuration Summary --

-- Configuring done
-- Generating done
-- Build files have been written to: /home/alexander/programming/c/build_cfltk
~/programming/c/build_cfltk 
$ cmake --build . -- -j4
[ 0%] Building C object fltk/zlib/CMakeFiles/fltk_z.dir/adler32.c.o
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/home/alexander/programming/c/cfltk/fltk/src/Fl_Text_Display.cxx: В конструкторе «Fl_Text_Display::Fl_Text_Display(int, int, int, int, const char*)»:
/home/alexander/programming/c/cfltk/fltk/src/Fl_Text_Display.cxx:122:57: предупреждение: «void* __builtin_memset(void*, int, long unsigned int)» writing between 4 and 8589934584 bytes into a region of size 0 overflows the destination [-Wstringop-overflow=]
122 | for (int i=1; i<mNVisibleLines; i++) mLineStarts[i] = -1;
| ~~~~~~~~~~~~~~~^~~~
/home/alexander/programming/c/cfltk/fltk/src/Fl_Text_Display.cxx:120:39: замечание: at offset 4 into destination object of size 4 allocated by «operator new []»
120 | mLineStarts = new int[mNVisibleLines];
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/usr/bin/ld: невозможно найти -lfltk_png: Нет такого файла или каталога
collect2: ошибка: выполнение ld завершилось с кодом возврата 1
gmake[2]: *** [CMakeFiles/cfltk.dir/build.make:481: libcfltk.so.1.3.10] Ошибка 1
gmake[1]: *** [CMakeFiles/Makefile2:177: CMakeFiles/cfltk.dir/all] Ошибка 2
gmake[1]: *** Ожидание завершения заданий…
[100%] Built target fluid
gmake: *** [Makefile:136: all] Ошибка 2

AlexanderZhirov · 2022-07-04T09:00:41Z

When building a dynamic library, I get the error of not having a PNG library:

I'm sorry, my inattention:

 -- Shared libraries will not be built (set OPTION_BUILD_SHARED_LIBS=ON to build)

MoAlyousef · 2022-07-04T09:37:52Z

If you don't need fltk image support, make sure you have libpng-dev is installed.
Make sure you also use a recent version of cfltk and fltk, since there was an issue reported in FLTK regarding png linking.
Also try with this:

cmake -B bin -S . -DCMAKE_BUILD_TYPE=Release -DOPTION_USE_SYSTEM_LIBPNG=ON -DOPTION_USE_SYSTEM_LIBJPEG=ON -DOPTION_USE_SYSTEM_ZLIB=ON -DOPTION_USE_GL=OFF -DFLTK_BUILD_EXAMPLES=OFF -DFLTK_BUILD_TEST=OFF -DOPTION_USE_THREADS=ON -DOPTION_LARGE_FILE=ON -DOPTION_BUILD_HTML_DOCUMENTATION=OFF -DOPTION_BUILD_PDF_DOCUMENTATION=OFF -DCFLTK_BUILD_SHARED=ON -DCFLTK_LINK_IMAGES=OFF -DCMAKE_POSITION_INDEPENDENT_CODE=ON

To get built-in image support:

cmake -B bin -S . -DCMAKE_BUILD_TYPE=Release -DOPTION_USE_SYSTEM_LIBPNG=OFF -DOPTION_USE_SYSTEM_LIBJPEG=OFF -DOPTION_USE_SYSTEM_ZLIB=OFF -DOPTION_USE_GL=OFF -DFLTK_BUILD_EXAMPLES=OFF -DFLTK_BUILD_TEST=OFF -DOPTION_USE_THREADS=ON -DOPTION_LARGE_FILE=ON -DOPTION_BUILD_HTML_DOCUMENTATION=OFF -DOPTION_BUILD_PDF_DOCUMENTATION=OFF -DCFLTK_BUILD_SHARED=ON -DCMAKE_POSITION_INDEPENDENT_CODE=ON

MoAlyousef mentioned this issue Jun 8, 2023

cfltk tries to link with libfltk.a when building shared libs #222

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Shared lib #184

Shared lib #184

MasterVitronic commented Apr 2, 2021

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MoAlyousef commented Apr 3, 2021

MoAlyousef commented Apr 3, 2021 •

edited

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MasterVitronic commented Apr 3, 2021

MoAlyousef commented Apr 4, 2021

AlexanderZhirov commented Jul 4, 2022

AlexanderZhirov commented Jul 4, 2022

MoAlyousef commented Jul 4, 2022

Shared lib #184

Shared lib #184

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MasterVitronic commented Apr 2, 2021

MoAlyousef commented Apr 2, 2021

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MoAlyousef commented Apr 3, 2021

MasterVitronic commented Apr 3, 2021

MoAlyousef commented Apr 3, 2021

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MasterVitronic commented Apr 3, 2021

MoAlyousef commented Apr 4, 2021

AlexanderZhirov commented Jul 4, 2022

AlexanderZhirov commented Jul 4, 2022

MoAlyousef commented Jul 4, 2022

MoAlyousef commented Apr 3, 2021 •

edited

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