c++ - wxwidget wxRichTextCtrl编译结果在ld : symbol(s) not found

Question

我使用的是 MacOS Mojave 10.14。我可以编译wxWidget 代码并编译了一些demo 等。我不能编译的wxWidget 的唯一特性是一个wxRichTextCtrl。每当我在 main.cpp 文件中执行以下操作时，我都会收到错误消息:

wxRichTextCtrl* richTextCtrl = new wxRichTextCtrl(this, -1, wxT(""), wxDefaultPosition,
    wxSize(250, 150), wxTE_MULTILINE);

我收到这个错误

Undefined symbols for architecture x86_64:
"wxRichTextCtrl::wxRichTextCtrl(wxWindow*, int, wxString const&, wxPoint const&, wxSize const&, long, wxValidator const&, wxString const&)", referenced from:
  MyFrame::MyFrame(wxString const&, wxPoint const&, wxSize const&) in main-498ba7.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

我曾尝试用 wxPanel 替换“this”，但这导致了同样的错误。来自 g++ 的完整错误报告是:

Apple clang version 11.0.0 (clang-1100.0.33.5)
Target: x86_64-apple-darwin18.7.0
Thread model: posix
InstalledDir: /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
 "/Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin    /clang" -cc1 -triple x86_64-apple-macosx10.14.0 -Wdeprecated-objc-isa-usage -Werror=deprecated- objc-isa-usage -emit-obj -mrelax-all -disable-free -disable-llvm-verifier -discard-value-names -main-file-name main.cpp -mrelocation-model pic -pic-level 2 -mthread-model posix -mdisable-fp- elim -fno-strict-return -masm-verbose -munwind-tables -target-cpu penryn -dwarf-column-info -debugger-tuning=lldb -ggnu-pubnames -target-linker-version 512.4 -v -resource-dir /Applications  /Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/11.0.0 -I/usr/local/lib/wx/include/osx_cocoa-unicode-static-3.1 -I /usr/local/include/wx-3.1 -D _FILE_OFFSET_BITS=64 -D __WXMAC__ -D __WXOSX__ -D __WXOSX_COCOA__ -stdlib=libc++ -internal-isystem /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1 -Wno-framework-include-private-from-public -Wno-atimport-in-framework-   header -Wno-extra-semi-stmt -Wno-quoted-include-in-framework-header -fdeprecated-macro -fdebug-   compilation-dir /Users/user/Downloads/wxWidgets-3.1.3/build/osx -ferror-limit 19 -fmessage-length 80 -stack-protector 1 -mdarwin-stkchk-strong-link -fblocks -fencode-extended-block-signature -fregister-global-dtors-with-atexit -fobjc-runtime=macosx-10.14.0 -fcxx-exceptions -fexceptions -fmax-type-align=16 -fdiagnostics-show-option -fcolor-diagnostics -o /var/folders/f3/lvdll7257lq_4_fcysmprc700000gn/T/main-b50747.o -x c++ main.cpp
clang -cc1 version 11.0.0 (clang-1100.0.33.5) default target x86_64-apple-darwin18.7.0
ignoring nonexistent directory "/usr/include/c++/v1"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/lib/wx/include/osx_cocoa-unicode-static-3.1
 /usr/local/include/wx-3.1
 /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin  /../include/c++/v1
 /usr/local/include
 /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib  /clang/11.0.0/include
 /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include
 /usr/include
 /System/Library/Frameworks (framework directory)
 /Library/Frameworks (framework directory)
End of search list.
 "/Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld" -demangle -lto_library /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/libLTO.dylib -no_deduplicate -dynamic -arch x86_64 -macosx_version_min 10.14.0 -o out -L/usr/local/lib -framework IOKit -framework Carbon -framework         Cocoa -framework AudioToolbox -framework System -framework OpenGL /usr/local/lib/libwx_osx_cocoau_xrc-3.1.a /usr/local/lib/libwx_osx_cocoau_qa-3.1.a /usr/local/lib/libwx_baseu_net-3.1.a /usr/local/lib/libwx_osx_cocoau_html-3.1.a /usr/local/lib/libwx_osx_cocoau_core-3.1.a /usr/local/lib/libwx_baseu_xml-3.1.a /usr/local/lib/libwx_baseu-3.1.a -framework WebKit -lwxregexu-3.1 -lwxscintilla-3.1 -lexpat -lpng -ljpeg -ltiff -lz -framework Security -lpthread -liconv -llzma /var/folders/f3/lvdll7257lq_4_fcysmprc700000gn/T/main-b50747.o -lc++ -lSystem /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/11.0.0/lib/darwin/libclang_rt.osx.a
Undefined symbols for architecture x86_64:
  "wxRichTextCtrl::wxRichTextCtrl(wxWindow*, int, wxString const&, wxPoint const&, wxSize const&, long, wxValidator const&, wxString const&)", referenced from:
      MyFrame::MyFrame(wxString const&, wxPoint const&, wxSize const&) in main-b50747.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

我使用 g++ 从我的终端编译并从 wx-config --cxxflags 和 wx-config --libs 获取我的链接器选项等。我在 xCode 中编程。使用 gcc 而不是 g++ 会导致相同的错误。

Answer 1

默认情况下，wx-config --libs 只返回“标准”库(基本上是实现时所有现有的库)而不是所有可用的库稍后添加更多库而不更改不需要它们的应用程序的任何内容。

所以如果你需要使用一个不包含在这个“标准子集”中的库，你必须明确地指定它，像这样:wx-config --libs std,richtext。