如何使用mingw链接图表导演库

时间:2014-08-21 16:41:14

标签: g++ mingw chart-director

我正在尝试使用Chart Director在mingw下构建一个应用程序。我的代码编译得很好,但我从链接器中获得了未定义的引用错误。

目标文件需要链接到../ ChartDirector.cpp / lib / chartdir51.lib

我已将此文件重命名为../ChartDirector.cpp/lib/libchartdir51.a如果我不这样做,则链接器无法找到它。

结果是:

mingw32-g++.exe -LJ:\wxWidgets-3.0.1\lib\gcc481TDM_dll
   -L..\ChartDirector_cpp\lib -o ..\bin\plot.exe obj\Debug\plot.o  
   -lwxbase30u -lwxmsw30u_core -lchartdir51 -mwindows


obj\Debug\plot.o: In function `ZN3BoxC2EP11BoxInternal':
C:\Users\James\Documents\code\vase\plot/../ChartDirector_cpp/include/chartdir.h:804:
    undefined reference to `Box2DrawObj'
obj\Debug\plot.o: In function `ZN7TextBoxC1EP15TextBoxInternal':
C:\Users\James\Documents\code\vase\plot/../ChartDirector_cpp/include/chartdir.h:832:
    undefined reference to `TextBox2Box'
   ... and so on

为了简单起见,我改为尝试构建Chart Director提供的simplebar演示应用程序。 build命令现在看起来像这样:

mingw32-g++.exe 
C:\Users\James\Documents\code\vase\test\simplebar.cpp
-IC:\Users\James\Documents\code\vase\ChartDirector_cpp\include
-o C:\Users\James\Documents\code\vase\bin\test.exe
-LC:\Users\James\Documents\code\vase\ChartDirector_cpp\lib\ 
-lchartdir51

我仍然有相同的未定义。

关注this recipe我创建了一个看起来像这样的def文件

EXPORTS
Box2DrawObj
TextBox2Box
CBaseChart_destroy
CBaseChart_makeChart
CAxis_setLabels
BarLayer2Layer
CXYChart_create
XYChart2BaseChart
CXYChart_xAxis
CXYChart_setPlotArea
CXYChart_addBarLayer

并使用dlltool创建一个新的libchartdir51.a

dlltool -d C:\Users\James\Documents\code\vase\ChartDirector_cpp\lib\chartdir.def
 -l C:\Users\James\Documents\code\vase\ChartDirector_cpp\lib\libchartdir51.a

那就修好了我之前看过的未定义,但现在我得到的东西更加神秘了:

C:\Users\James\Documents\code\vase\ChartDirector_cpp\lib/libchartdir51.a(diaybs00001.o):(.idata$7+0x
0):
undefined reference to `_head_C__Users_James_Documents_code_vase_ChartDirector_cpp_lib_libchartd
ir51_a'
C:\Users\James\Documents\code\vase\ChartDirector_cpp\lib/libchartdir51.a(diaybs00009.o):(.idata$7+0x
0): undefined reference to `_head_C__Users_James_Documents_code_vase_ChartDirector_cpp_lib_libchartd
ir51_a'
... and so on

我尝试下载mapdir的linux版本。结果是:

mingw32-g++.exe 
C:\Users\James\Downloads\ChartDirector\cppdemo\simplebar\simplebar.cpp
-IC:\Users\James\Downloads\ChartDirector\include
-o C:\Users\James\code\vase\bin\test.exe 
C:\Users\James\Downloads\ChartDirector\lib\libchartdir.so.5.1.0

C:\Users\James\Downloads\ChartDirector\lib\libchartdir.so.5.1.0: 
could not read symbols: File in wrong format
collect2.exe: error: ld returned 1 exit status

2 个答案:

答案 0 :(得分:1)

当库不匹配时,通常会出现未定义的参考错误。始终从ChartDirector下载页面获取最新的库。

答案 1 :(得分:0)

问题是我试图在32位mingw上使用64位版本的ChartDirector构建。下载32位库可以解决问题:

mingw32-g++ 
C:\Users\James\Downloads\chartdir_cpp_win32\ChartDirector\cppdemo\simplebar\simplebar.cpp
-IC:\Users\Jam es\Downloads\chartdir_cpp_win32\ChartDirector\include
-o C:\Users\James\code\vase\bin\test2.exe
-C:\Users\James\Downloads\chartdir_cpp_win32\ChartDirector\lib\chartdir51.dll