I'm getting these errors with MingW:
undefined reference to `libiconv_close'
undefined reference to `libiconv_open'
undefined reference to `libiconv'
I have the libiconv package from MingW installed. What is causing this? If this is of some importance, I'm trying to get tinygettext working.
You must have forgotten to add -liconv to the link line. Adding that there should resolve those problems.
Related
I am developing c++ application in Win7 OS using GCC compiler and Code::Blocks as IDE. I have everything set up and everything works. Now i need to move whole development environment to virtual machine so i have installed system, IDE compiler, copied whole project. I double checked all libraries and options and they are same. When i try to build application i get this errors (50) from build log(relevant parts):
-------------- Build: Debug in MagicReportsFull (compiler: GNU GCC Compiler)---------------
mingw32-g++.exe -Wall -std=c++11 -fexceptions -std=c++11 -g -IC:\Projects\MagicReportsFull\include -IC:\Projects\MagicReportsFull\ -I"C:\Program Files (x86)\CodeBlocks\MinGW" -IC:\Projects\MagicReportsFull -I"C:\Program Files (x86)\CodeBlocks\MinGW" -IC:\Projects\MagicReportsFull\include -c C:\Projects\MagicReportsFull\main.cpp -o obj\Debug\main.o
windres.exe -J rc -O coff -i C:\Projects\MAGICR~1\resource.rc -o obj\Debug\resource.res
windres.exe -J rc -O coff -i C:\Projects\MAGICR~1\version.rc -o obj\Debug\version.res
mingw32-g++.exe -LC:\Projects\MagicReportsFull\ -o bin\Debug\MagicReportsFull.exe obj\Debug\main.o obj\Debug\resource.res obj\Debug\version.res -lcomdlg32 -lgdi32 -luser32 -lshlwapi ..\..\CustomLibraries\lpng1636-build\libpng16.a ..\..\CustomLibraries\zlib-1.2.11-build\libzlibstatic.a ..\..\CustomLibraries\libharu-RELEASE_2_3_0-build\src\libhpdfs.a -lcomctl32 -mwindows
.
.
.
obj\Debug\main.o: In function `Z19CUSTOM_RegularTableP13_HPDF_Doc_RecP14_HPDF_Dict_RecffPfiS3_ic':
C:/Projects/MagicReportsFull/pdf.h:99: undefined reference to `HPDF_Page_Rectangle'
C:/Projects/MagicReportsFull/pdf.h:100: undefined reference to `HPDF_Page_Stroke'
C:/Projects/MagicReportsFull/pdf.h:102: undefined reference to `HPDF_Page_Rectangle'
C:/Projects/MagicReportsFull/pdf.h:103: undefined reference to `HPDF_Page_Stroke'
C:/Projects/MagicReportsFull/pdf.h:114: undefined reference to `HPDF_Page_MoveTo'
C:/Projects/MagicReportsFull/pdf.h:115: undefined reference to `HPDF_Page_LineTo'
C:/Projects/MagicReportsFull/pdf.h:116: undefined reference to `HPDF_Page_Stroke'
C:/Projects/MagicReportsFull/pdf.h:125: undefined reference to `HPDF_Page_MoveTo'
C:/Projects/MagicReportsFull/pdf.h:126: undefined reference to `HPDF_Page_LineTo'
C:/Projects/MagicReportsFull/pdf.h:127: undefined reference to `HPDF_Page_Stroke'
obj\Debug\main.o: In function `Z27CUSTOM_RegularTable_AddText20_CUSTOM_TableHandleriiPKhjccP14_HPDF_Dict_Recj':
C:/Projects/MagicReportsFull/pdf.h:198: undefined reference to `HPDF_Font_GetCapHeight'
C:/Projects/MagicReportsFull/pdf.h:232: undefined reference to `HPDF_Font_MeasureText'
C:/Projects/MagicReportsFull/pdf.h:294: undefined reference to `HPDF_Page_SetFontAndSize'
C:/Projects/MagicReportsFull/pdf.h:300: undefined reference to `HPDF_Font_MeasureText'
C:/Projects/MagicReportsFull/pdf.h:315: undefined reference to `HPDF_Page_BeginText'
C:/Projects/MagicReportsFull/pdf.h:316: undefined reference to `HPDF_Page_TextRect'
C:/Projects/MagicReportsFull/pdf.h:317: undefined reference to `HPDF_Page_EndText'
obj\Debug\main.o: In function `Z13pdf_generatorcPci':
C:/Projects/MagicReportsFull/pdf.h:347: undefined reference to `HPDF_New'
C:/Projects/MagicReportsFull/pdf.h:353: undefined reference to `HPDF_SetCompressionMode'
C:/Projects/MagicReportsFull/pdf.h:355: undefined reference to `HPDF_GetFont'
C:/Projects/MagicReportsFull/pdf.h:356: undefined reference to `HPDF_GetFont'
C:/Projects/MagicReportsFull/pdf.h:357: undefined reference to `HPDF_GetFont'
C:/Projects/MagicReportsFull/pdf.h:358: undefined reference to `HPDF_GetFont'
C:/Projects/MagicReportsFull/pdf.h:362: undefined reference to `HPDF_LoadPngImageFromFile'
C:/Projects/MagicReportsFull/pdf.h:442: undefined reference to `HPDF_AddPage'
C:/Projects/MagicReportsFull/pdf.h:444: undefined reference to `HPDF_Page_SetSize'
C:/Projects/MagicReportsFull/pdf.h:446: undefined reference to `HPDF_Page_SetLineWidth'
C:/Projects/MagicReportsFull/pdf.h:447: undefined reference to `HPDF_Page_SetLineWidth'
C:/Projects/MagicReportsFull/pdf.h:460: undefined reference to `HPDF_Page_DrawImage'
C:/Projects/MagicReportsFull/pdf.h:463: undefined reference to `HPDF_Page_BeginText'
C:/Projects/MagicReportsFull/pdf.h:464: undefined reference to `HPDF_Page_SetRGBFill'
C:/Projects/MagicReportsFull/pdf.h:465: undefined reference to `HPDF_Page_SetFontAndSize'
C:/Projects/MagicReportsFull/pdf.h:466: undefined reference to `HPDF_Page_TextRect'
C:/Projects/MagicReportsFull/pdf.h:467: undefined reference to `HPDF_Page_EndText'
C:/Projects/MagicReportsFull/pdf.h:685: undefined reference to `HPDF_AddPage'
C:/Projects/MagicReportsFull/pdf.h:687: undefined reference to `HPDF_Page_SetSize'
C:/Projects/MagicReportsFull/pdf.h:689: undefined reference to `HPDF_Page_SetLineWidth'
C:/Projects/MagicReportsFull/pdf.h:690: undefined reference to `HPDF_Page_SetLineWidth'
C:/Projects/MagicReportsFull/pdf.h:699: undefined reference to `HPDF_Page_DrawImage'
C:/Projects/MagicReportsFull/pdf.h:702: undefined reference to `HPDF_Page_BeginText'
C:/Projects/MagicReportsFull/pdf.h:703: undefined reference to `HPDF_Page_SetRGBFill'
C:/Projects/MagicReportsFull/pdf.h:704: undefined reference to `HPDF_Page_SetFontAndSize'
C:/Projects/MagicReportsFull/pdf.h:705: undefined reference to `HPDF_Page_TextRect'
C:/Projects/MagicReportsFull/pdf.h:706: undefined reference to `HPDF_Page_EndText'
C:/Projects/MagicReportsFull/pdf.h:829: undefined reference to `HPDF_AddPage'
C:/Projects/MagicReportsFull/pdf.h:831: undefined reference to `HPDF_Page_SetSize'
C:/Projects/MagicReportsFull/pdf.h:833: undefined reference to `HPDF_Page_SetLineWidth'
C:/Projects/MagicReportsFull/pdf.h:834: undefined reference to `HPDF_Page_SetLineWidth'
C:/Projects/MagicReportsFull/pdf.h:843: undefined reference to `HPDF_Page_DrawImage'
C:/Projects/MagicReportsFull/pdf.h:846: undefined reference to `HPDF_Page_BeginText'
Process terminated with status 1 (0 minute(s), 5 second(s))
50 error(s), 37 warning(s) (0 minute(s), 5 second(s))
As you can see, I am using LibHaru library which works flawlesly in guest system. Also i believe problem is not in library itself but in linker.
Project build options -> Linker settings -> Link libraries:
libcomdlg32.a
libgdi32.a
libuser32.a
libshlwapi.a
..\..\CustomLibraries\lpng1636-build\libpng16.a
..\..\CustomLibraries\zlib-1.2.11-build\libzlibstatic.a
..\..\CustomLibraries\libharu-RELEASE_2_3_0-build\src\libhpdfs.a
libcomctl32.a
I tried to do the same thing in Win7 virtual machine with same results. I am using same files as in guest system. Any ideas what went wrong?
I posted this question because i was not sure about linker settings being ok but since nobody said that its wrong i searched for other problems. So it turns out that i have been using wrong Program Files in Global compiler settings -> Toolchain executables. Also library order was wrong, LibHaru needed to be first and then other dependent libraries. Uninstalled GCC and IDE then installed correct version of GCC + IDE. Now it compiles without problem.
I suspect that reinstalling the compiler might have changed the version of MinGW, and maybe the library isn't compatible between these 2 versions.
I've had similar weird behaviour with MinGW before, and recompiling the dependencies myself with the same compiler fixed the issue (it's a tedious solution though).
Are the compiler and system exactly the same ? (same architecture, version, etc)
Check if you havent copied some codeblocks environment specific files from the previous system, maybe codeblocks is trying to compile with options that doesn't apply to your new environment.
Does the libhpdfs headers have system dependent defines ?
Did you compile libhpdfs.a yourself ?
Did you try recompiling it yourself on the virtual machine ?
I've build libvpx.a and headers with MSYS (for MinGW). When I'm trying to compile an example a lot of undefined references to vpx members occurs:
g++ -m32 -static -o dist/Debug/MinGW-Windows/test1 build/Debug/MinGW-Windows/main.o -L/D/Libraries/libvpx/ -lvpx
build/Debug/MinGW-Windows/main.o: In function `main':
D:\Projects\CPP_test\Test1/main.cpp:107: undefined reference to `die'
D:\Projects\CPP_test\Test1/main.cpp:109: undefined reference to `vpx_video_reader_open'
D:\Projects\CPP_test\Test1/main.cpp:111: undefined reference to `die'
D:\Projects\CPP_test\Test1/main.cpp:114: undefined reference to `die'
D:\Projects\CPP_test\Test1/main.cpp:116: undefined reference to `vpx_video_reader_get_info'
D:\Projects\CPP_test\Test1/main.cpp:118: undefined reference to `get_vpx_decoder_by_fourcc'
D:\Projects\CPP_test\Test1/main.cpp:120: undefined reference to `die'
D:\Projects\CPP_test\Test1/main.cpp:125: undefined reference to `die_codec'
D:\Projects\CPP_test\Test1/main.cpp:127: undefined reference to `vpx_video_reader_read_frame'
D:\Projects\CPP_test\Test1/main.cpp:132: undefined reference to `vpx_video_reader_get_frame'
D:\Projects\CPP_test\Test1/main.cpp:134: undefined reference to `die_codec'
D:\Projects\CPP_test\Test1/main.cpp:137: undefined reference to `vpx_img_write'
D:\Projects\CPP_test\Test1/main.cpp:144: undefined reference to `die_codec'
D:\Projects\CPP_test\Test1/main.cpp:149: undefined reference to `vpx_video_reader_close'
All includes made, lib is linked...
So what am I doing wrong?
PS: Maybe it's not enough to link the libvpx.a file, and I also need the .c files that come with the sources (if so, I do not understand what for the .a lib file is needed)?
It looks like you just copied and pasted blindly from the example.
The functions die_codec and vpx_video_* all come from tools_common.c (https://github.com/webmproject/libvpx/blob/master/tools_common.c) and video_reader.h (https://github.com/webmproject/libvpx/blob/master/video_reader.c), which I believe is not a core part of the libvpx sdk (see here: http://www.webmproject.org/docs/webm-sdk/files.html).
In order for your example to work, you will need to copy-paste those files (both the .c and .h files) as well and include them in your main.cc file.
I'm having some trouble getting the QHull C++ interface working in a catkin project. My project compiles fine and I've specified the library to be used by the linker, however it fails to link with the following error messages.
CMakeFiles/path_to/my_code.cpp.o: In function `main':
my_code.cpp:(.text+0x17ab): undefined reference to `orgQhull::RboxPoints::RboxPoints()'
my_code.cpp:(.text+0x182a): undefined reference to `orgQhull::PointCoordinates::appendPoints(std::istream&)'
my_code.cpp:(.text+0x1839): undefined reference to `orgQhull::Qhull::Qhull()'
my_code.cpp:(.text+0x1857): undefined reference to `orgQhull::Qhull::runQhull(orgQhull::RboxPoints const&, char const*)'
my_code.cpp:(.text+0x18aa): undefined reference to `orgQhull::Qhull::outputQhull(char const*)'
my_code.cpp:(.text+0x19d0): undefined reference to `orgQhull::Qhull::~Qhull()'
my_code.cpp:(.text+0x19ee): undefined reference to `orgQhull::RboxPoints::~RboxPoints()'
my_code.cpp:(.text+0x1c10): undefined reference to `orgQhull::Qhull::~Qhull()'
my_code.cpp:(.text+0x1c38): undefined reference to `orgQhull::RboxPoints::~RboxPoints()'
CMakeFiles/build_path/my_code.cpp.o: In function `orgQhull::Qhull::setOutputStream(std::ostream*)':
I've installed the following packages, to get the shared object and development files.
libqhull-dev
libqhull-doc
libqhull7
qhull-bin
I don't know if this is related to the problem, but looking into the libqhull.so shared object there are no symbols in it.
####:/usr/lib/x86_64-linux-gnu$ nm -g libqhull.so
nm: libqhull.so: no symbols
Has anyone got any experience getting this to work on linux? Any help would be appreciated.
I'm using ROS Indigo, this works for me:
SET(qhullDir path_to_qhull_code)
INCLUDE_DIRECTORIES(${qhullDir}/src/libqhullcpp)
INCLUDE_DIRECTORIES(${qhullDir}/src)
LINK_DIRECTORIES(${qhullDir}/build)
INCLUDE_DIRECTORIES(${qhullDir}/src/libqhullcpp)
INCLUDE_DIRECTORIES(include)
SET(qhullLibs qhullcpp qhull_r)
add_library(${PROJECT_NAME}_library
src/myClass.cpp)
add_executable(libExample
src/myrunnable.cpp)
target_link_libraries(libExample
${PROJECT_NAME}_library ${qhullLibs})
SET_TARGET_PROPERTIES(libExample PROPERTIES
COMPILE_DEFINITIONS "qh_QHpointer")
I'm compiling qhull from source with cmake.
Maybe this helps someone.
Overview
I am attempting to convert a C++ project from a Visual Studio solution to a makefile project (using g++), as a first step to supporting multiple platforms with ease. This project requires the Simple DirectMedia Layer 2 (SDL2) and SDL_image libraries. The project previously compiled without errors, and I have since corrected any errors halting the g++ compiler. I am still using Windows x64 and MinGW x64 at this point.
Problem
When linking, g++ throws errors as though there is something wrong with the SDL2 library, claiming that all functions of SDL2 can't be found. However, I know it is finding the libraries, because when I provide an incorrect name or path, I get an explicit error.
Here is my new makefile, apologies if it isn't up to standard:
# Source files
SRC_ENTITIES = Entity_Block.cpp Entity_Controller.cpp Entity_Cursor.cpp Entity_GreenEye.cpp Entity_Harry.cpp
SRC_ENGINE = Game.cpp Sound.cpp SoundManager.cpp Sprite.cpp Texture.cpp TextureManager.cpp Entity.cpp EntityManager.cpp
SRC_ENTRY = main.cpp
# Source and destination
SOURCE = $(SRC_ENTITIES) $(SRC_ENGINE) $(SRC_ENTRY)
DEST = crystal_engine.bin
# Compiler options
OUTPUT = -o $(DEST)
INCLUDES = -I . -I.\include\windows\SDL2-devel-2.0.4-mingw\SDL2-2.0.4\x86_64-w64-mingw32\include\SDL2 -I.\include\windows\SDL2_image-devel-2.0.1-mingw\SDL2_image-2.0.1\x86_64-w64-mingw32\include\SDL2
LIBPATHS = -L.\include\windows\SDL2-devel-2.0.4-mingw\SDL2-2.0.4\x86_64-w64-mingw32\lib -L.\include\windows\SDL2_image-devel-2.0.1-mingw\SDL2_image-2.0.1\x86_64-w64-mingw32\lib
LIBRARIES = -lSDL2 -lSDL2main -lSDL2_image
STANDARD = -std=c++0x
FLAGS = -Wall
default:
echo No task selected
compile:
g++ $(STANDARD) $(INCLUDES) $(FLAGS) $(SOURCE) $(OUTPUT) $(LIBPATHS) $(LIBRARIES)
run:
./$(DEST)
run_win:
$(DEST)
Therefor the command line currently looks like this:
g++ -std=c++0x -I . -I.\include\windows\SDL2-devel-2.0.4-mingw\SDL2-2.0.4\x86_64-w64-mingw32\include\SDL2 -I.\include\windows\SDL2_image-devel-2.0.1-mingw\SDL2_image-2.0.1\x86_64-w64-mingw32\include\SDL2 -Wall Entity_Block.cpp Entity_Controller.cpp Entity_Cursor.cpp Entity_GreenEye.cpp Entity_Harry.cpp Game.cpp Sound.cpp SoundManager.cpp Sprite.cpp Texture.cpp TextureManager.cpp Entity.cpp EntityManager.cpp main.cpp -o crystal_engine.bin -L.\include\windows\SDL2-devel-2.0.4-mingw\SDL2-2.0.4\x86_64-w64-mingw32\lib -L.\include\windows\SDL2_image-devel-2.0.1-mingw\SDL2_image-2.0.1\x86_64-w64-mingw32\lib -lSDL2 -lSDL2main -lSDL2_image
Disregarding warnings (removing -Wall), the output of the compile looks like this:
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x169): undefined reference to `SDL_GetTicks'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x2b4): undefined reference to `SDL_GetMouseState'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x2c2): undefined reference to `SDL_PollEvent'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x2d0): undefined reference to `SDL_GetTicks'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x363): undefined reference to `SDL_GetTicks'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x3ef): undefined reference to `SDL_GetTicks'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x46c): undefined reference to `SDL_GetTicks'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x4e3): undefined reference to `SDL_RenderClear'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x4fd): undefined reference to `SDL_RenderPresent'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x597): undefined reference to `SDL_ShowCursor'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x5b1): undefined reference to `SDL_Init'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x633): undefined reference to `SDL_CreateRenderer'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x663): undefined reference to `SDL_CreateWindowAndRenderer'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x678): undefined reference to `SDL_SetWindowTitle'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x836): undefined reference to `SDL_SetRenderDrawColor'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x844): undefined reference to `SDL_RenderClear'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x852): undefined reference to `SDL_RenderPresent'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x865): undefined reference to `SDL_SetHint'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x881): undefined reference to `SDL_RenderSetLogicalSize'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x895): undefined reference to `SDL_GL_SetAttribute'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x8a3): undefined reference to `SDL_GetError'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x8d8): undefined reference to `SDL_GL_SetAttribute'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0x8e6): undefined reference to `SDL_GetError'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0xa3d): undefined reference to `SDL_Quit'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0xaba): undefined reference to `SDL_DestroyWindow'
C:\Users\[...]\ccSkHjgE.o:Game.cpp:(.text+0xad1): undefined reference to `SDL_DestroyRenderer'
f:/mingw/mingw-4.8.1/bin/../lib/gcc/mingw32/4.8.1/../../../../mingw32/bin/ld.exe: C:\Users\[...]\ccSkHjgE.o: bad reloc address 0x1b in section `.text$printf[_printf]'
collect2.exe: error: ld returned 1 exit status
make: *** [compile] Error 1
Troubleshooting
I have tried a number of things from supplying exact paths to libraries to updating SDL from 2.0.3 to 2.0.4. The behavior is the same. There are two include/lib folders in the MinGW devel folder for each architecture, and changing which one I include does not make a difference.
There seems to be a lot of commotion about the order of which arguments are supplied to g++, given the three posts below:
SDL2 Undefined references to functions
Try to change the sequence of the input params:
I've stumbled over this before (on Linux)
https://askubuntu.com/questions/68922/cant-compile-program-that-uses-sdl-after-upgrade-to-11-10-undefined-reference
Ok, solved. Apparently, for some mysterious reason, the order of the gcc options now matters.
http://smf.cataclysmdda.com/index.php?topic=11028.0
It looks like the SDL2_image library is included, but the main SDL2 library is not (the references could be out of order).
Unfortunately, regardless of how I have reordered the arguments, I can't seem to change this result. Unlike with most issues, I haven't even been able to make it any worse! Any and all help is greatly appreciated.
I don't believe this has anything to do with my code, considering a compile without linking -c completes fine, but if it assists with the solution I would be more than happy to post some of it (it is a LOT of code).
Edits
Per request, here is a dump of the full compile with the -v and -Wall options. It is too large for this question so I threw it in a pastebin.
http://pastebin.com/ydET621i
When using the -DDECLSPEC=__declspec(dllimport) option, the output becomes:
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x169): undefined reference to `_imp__SDL_GetTicks'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x2b6): undefined reference to `_imp__SDL_GetMouseState'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x2c6): undefined reference to `_imp__SDL_PollEvent'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x2d6): undefined reference to `_imp__SDL_GetTicks'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x36b): undefined reference to `_imp__SDL_GetTicks'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x3f9): undefined reference to `_imp__SDL_GetTicks'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x478): undefined reference to `_imp__SDL_GetTicks'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x4f1): undefined reference to `_imp__SDL_RenderClear'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x50d): undefined reference to `_imp__SDL_RenderPresent'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x5a9): undefined reference to `_imp__SDL_ShowCursor'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x5c5): undefined reference to `_imp__SDL_Init'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x649): undefined reference to `_imp__SDL_CreateRenderer'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x67b): undefined reference to `_imp__SDL_CreateWindowAndRenderer'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x692): undefined reference to `_imp__SDL_SetWindowTitle'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x852): undefined reference to `_imp__SDL_SetRenderDrawColor'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x862): undefined reference to `_imp__SDL_RenderClear'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x872): undefined reference to `_imp__SDL_RenderPresent'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x887): undefined reference to `_imp__SDL_SetHint'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x8a5): undefined reference to `_imp__SDL_RenderSetLogicalSize'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x8bb): undefined reference to `_imp__SDL_GL_SetAttribute'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x8cb): undefined reference to `_imp__SDL_GetError'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x902): undefined reference to `_imp__SDL_GL_SetAttribute'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0x912): undefined reference to `_imp__SDL_GetError'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0xa6b): undefined reference to `_imp__SDL_Quit'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0xaea): undefined reference to `_imp__SDL_DestroyWindow'
C:\Users\[...]\ccZ61vi9.o:Game.cpp:(.text+0xb03): undefined reference to `_imp__SDL_DestroyRenderer'
f:/mingw/mingw-4.8.1/bin/../lib/gcc/mingw32/4.8.1/../../../../mingw32/bin/ld.exe: C:\Users\[...]\ccZ61vi9.o: bad reloc address 0x1b in section `.text$printf[_printf]'
collect2.exe: error: ld returned 1 exit status
make: *** [compile] Error 1
Running ar -t libSDL2.a produces the following:
SDL.o
SDL_assert.o
SDL_error.o
SDL_hints.o
SDL_log.o
SDL_atomic.o
SDL_spinlock.o
SDL_audio.o
SDL_audiocvt.o
SDL_audiodev.o
SDL_audiotypecvt.o
SDL_mixer.o
SDL_wave.o
SDL_cpuinfo.o
SDL_dynapi.o
SDL_clipboardevents.o
SDL_dropevents.o
SDL_events.o
SDL_gesture.o
SDL_keyboard.o
SDL_mouse.o
SDL_quit.o
SDL_touch.o
SDL_windowevents.o
SDL_rwops.o
SDL_haptic.o
SDL_gamecontroller.o
SDL_joystick.o
e_atan2.o
e_log.o
e_pow.o
e_rem_pio2.o
e_sqrt.o
k_cos.o
k_rem_pio2.o
k_sin.o
k_tan.o
s_atan.o
s_copysign.o
s_cos.o
s_fabs.o
s_floor.o
s_scalbn.o
s_sin.o
s_tan.o
SDL_power.o
SDL_d3dmath.o
SDL_render.o
SDL_yuv_mmx.o
SDL_yuv_sw.o
SDL_render_d3d.o
SDL_render_d3d11.o
SDL_render_gl.o
SDL_shaders_gl.o
SDL_render_gles.o
SDL_render_gles2.o
SDL_shaders_gles2.o
SDL_render_psp.o
SDL_blendfillrect.o
SDL_blendline.o
SDL_blendpoint.o
SDL_drawline.o
SDL_drawpoint.o
SDL_render_sw.o
SDL_rotate.o
SDL_getenv.o
SDL_iconv.o
SDL_malloc.o
SDL_qsort.o
SDL_stdlib.o
SDL_string.o
SDL_thread.o
SDL_timer.o
SDL_RLEaccel.o
SDL_blit.o
SDL_blit_0.o
SDL_blit_1.o
SDL_blit_A.o
SDL_blit_N.o
SDL_blit_auto.o
SDL_blit_copy.o
SDL_blit_slow.o
SDL_bmp.o
SDL_clipboard.o
SDL_egl.o
SDL_fillrect.o
SDL_pixels.o
SDL_rect.o
SDL_shape.o
SDL_stretch.o
SDL_surface.o
SDL_video.o
SDL_nullevents.o
SDL_nullframebuffer.o
SDL_nullvideo.o
SDL_diskaudio.o
SDL_dummyaudio.o
SDL_windows.o
SDL_xinput.o
SDL_windowsclipboard.o
SDL_windowsevents.o
SDL_windowsframebuffer.o
SDL_windowskeyboard.o
SDL_windowsmessagebox.o
SDL_windowsmodes.o
SDL_windowsmouse.o
SDL_windowsopengl.o
SDL_windowsopengles.o
SDL_windowsshape.o
SDL_windowsvideo.o
SDL_windowswindow.o
SDL_winmm.o
SDL_directsound.o
SDL_xaudio2.o
SDL_dinputjoystick.o
SDL_mmjoystick.o
SDL_windowsjoystick.o
SDL_xinputjoystick.o
SDL_dinputhaptic.o
SDL_windowshaptic.o
SDL_xinputhaptic.o
SDL_syspower.o
SDL_sysfilesystem.o
SDL_sysmutex.o
SDL_syssem.o
SDL_systhread.o
SDL_systls.o
SDL_syscond.o
SDL_systimer.o
SDL_sysloadso.o
Thanks to suggestions from #J.JHakala and #user657267 I have reached the conclusion that my installation of MinGW is actually 32 bit! Given that I was using the 64 bit libraries, they would read in like any other library, but the functions within them were not recognized.
For anyone else having this problem, you can download the 64 bit version of MinGW or alternatively just switch which libraries you are importing.
x86: i686-w64-mingw32
x64: x86_64-w64-mingw32
I'm trying to compile my libnet script and am getting this error:
[root#whyme]# gcc -Wall `libnet-config --defines` mysocket.cc -o mysocket `libnet-config --libs` -lpcap -lnet
/tmp/ccUPbuVg.o: In function `main':
mysocket.cc:(.text+0x1e): undefined reference to `net_init'
mysocket.cc:(.text+0x2a): undefined reference to `net_loadconfig'
mysocket.cc:(.text+0x35): undefined reference to `net_detectdrivers'
mysocket.cc:(.text+0x40): undefined reference to `net_initdrivers'
mysocket.cc:(.text+0x54): undefined reference to `net_openconn'
mysocket.cc:(.text+0x83): undefined reference to `net_listen'
mysocket.cc:(.text+0xbe): undefined reference to `net_poll_listen'
mysocket.cc:(.text+0xd2): undefined reference to `net_closeconn'
mysocket.cc:(.text+0xf1): undefined reference to `net_receive_rdm'
mysocket.cc:(.text+0x11b): undefined reference to `net_query_rdm'
I didn't paste my code because this looks like it's related to linking the objects.
I'm able to compile & execute this source file with your exact command (changing only the filenames): https://github.com/repolho/Libnet-1.1-tutorial-examples/blob/master/01_init.c
I therefore suspect the problem is in your source after all. Most libnet function names are of the form libnet_[funcname], but in your linker errors I see names of the form net_[funcname].
I also note that you've manually inserted -lnet. On my system, -lnet is the entire output of libnet-config --libs, so if you do need it specifying it manually is redundant. It's not harmful, but you can type fewer characters next time. :)
Could you check what is returned by "libnet-config --libs" ?
It might be returning something wrong, thus preventing the linker to find the libnet library. Make sure that the part saying "-L XXXX" points to the directory where libnet library is located.