無法鏈接libpcrecpp W/MinGW的

Question

雖然編譯/鏈接驗證碼：使用此命令

#include <string> 
using std::string; 

#include <pcrecpp.h> 
using pcrecpp::RE; 

int main() { 
    string 
     subj ("Hello world!"), 
     rgx ("lolCat([0-9])"), 
     result; 
    RE(rgx).FullMatch(subj, &result); 
} 

...：

i586-mingw32msvc-g++ -std=c++11 -o test.exe -Ipcre-install/include test.cpp \ 
pcre-install/lib/libpcre.a \ 
pcre-install/lib/libpcrecpp.a \ 
pcre-install/lib/libpcreposix.a 

...我得到這個錯誤（S） ：

/tmp/ccAR72nT.o:test.cpp:(.text+0x119): undefined reference to `_imp___ZN7pcrecpp2RE6no_argE' 
/tmp/ccAR72nT.o:test.cpp:(.text+0x123): undefined reference to `_imp___ZN7pcrecpp2RE6no_argE' 
/tmp/ccAR72nT.o:test.cpp:(.text+0x12d): undefined reference to `_imp___ZN7pcrecpp2RE6no_argE' 
/tmp/ccAR72nT.o:test.cpp:(.text+0x137): undefined reference to `_imp___ZN7pcrecpp2RE6no_argE' 
/tmp/ccAR72nT.o:test.cpp:(.text+0x141): undefined reference to `_imp___ZN7pcrecpp2RE6no_argE' 
/tmp/ccAR72nT.o:test.cpp:(.text+0x14b): more undefined references to `_imp___ZN7pcrecpp2RE6no_argE' follow 
/tmp/ccAR72nT.o:test.cpp:(.text+0x1bd): undefined reference to `_imp___ZNK7pcrecpp2RE9FullMatchERKNS_11StringPieceERKNS_3ArgES6_S6_S6_S6_S6_S6_S6_S6_S6_S6_S6_S6_S6_S6_S6_' 
/tmp/ccAR72nT.o:test.cpp:(.text+0x1d6): undefined reference to `_imp___ZN7pcrecpp2RED1Ev' 
/tmp/ccAR72nT.o:test.cpp:(.text+0x294): undefined reference to `_imp___ZN7pcrecpp2RED1Ev' 
/tmp/ccAR72nT.o:test.cpp:(.text$_ZN7pcrecpp3ArgC1EPSs[__ZN7pcrecpp3ArgC1EPSs]+0x16): undefined reference to `_imp___ZN7pcrecpp3Arg12parse_stringEPKciPv' 
/tmp/ccAR72nT.o:test.cpp:(.text$_ZN7pcrecpp2REC1ERKSs[__ZN7pcrecpp2REC1ERKSs]+0x6a): undefined reference to `_imp___ZN7pcrecpp2RE4InitERKSsPKNS_10RE_OptionsE' 
collect2: error: ld returned 1 exit status 

我做錯了什麼？

libpcrecpp編譯此配置：

../pcre3-8.35/configure --host=i586-mingw32msvc \ 
--enable-shared=no --enable-static=yes \ 
--prefix="$(readlink -m ../pcre-install)" 

Answer 1

你必須編譯pcrecpp爲靜態庫，需要在編譯代碼時定義PCRE_STATIC，看到https://github.com/vmg/pcre/blob/a257f5c7acc12e64dc2b5aa170b8e4b87dc34f83/pcreposix.h#L117

i586-mingw32msvc-g++ -std=c++11 -o test.exe -DPCRE_STATIC -Ipcre-install/include test.cpp \ 
pcre-install/lib/libpcre.a \ 
pcre-install/lib/libpcrecpp.a \ 
pcre-install/lib/libpcreposix.a 

沒有PCRE_STATIC標記爲dllimport所有的公共職能，並有不同的名字改編

Answer 2

你必須定義PCRE_STATIC（即-DPCRE_STATIC）。