problem creating a qjson0.lib

[ChrisW67]

That's probably because it is called qjson.lib at a guess.

[Qg90]

This is inside the pro file.

win32-g++ {
LIBS += ../qjson/build/lib/qjson0.dll
}

win32-msvc* {
LIBS += ../qjson/build/lib/qjson0.lib
}

[ChrisW67]

So? What does the QJson project actually build?

[Qg90]

It's supposed to build a library. I'm using the CLI way found here.

at the "mingw32-make" command i get this error.

C:\Users\George\Desktop\qjson\build>mingw32-make
Scanning dependencies of target qjson_automoc
[ 11%] Automoc for target qjson
Generating moc_parserrunnable.cpp
Generating moc_qobjecthelper.cpp
C:/Users/George/Desktop/qjson/src/qobjecthelper.h(0): Note: No relevant classes
found. No output generated.
Generating moc_serializerrunnable.cpp
[ 11%] Built target qjson_automoc
Scanning dependencies of target qjson
[ 22%] Building CXX object src/CMakeFiles/qjson.dir/parser.cpp.obj
[ 33%] Building CXX object src/CMakeFiles/qjson.dir/qobjecthelper.cpp.obj
[ 44%] Building CXX object src/CMakeFiles/qjson.dir/json_scanner.cpp.obj
[ 55%] Building CXX object src/CMakeFiles/qjson.dir/json_parser.cc.obj
[ 66%] Building CXX object src/CMakeFiles/qjson.dir/parserrunnable.cpp.obj
[ 77%] Building CXX object src/CMakeFiles/qjson.dir/serializer.cpp.obj
[ 88%] Building CXX object src/CMakeFiles/qjson.dir/serializerrunnable.cpp.obj
[100%] Building CXX object src/CMakeFiles/qjson.dir/qjson_automoc.cpp.obj
Linking CXX shared library libqjson.dll
CMakeFiles\qjson.dir/objects.a(parser.cpp.obj):parser.cpp:(.text+0x4b): undefine
d reference to `_imp___ZN8QVariantD1Ev'
CMakeFiles\qjson.dir/objects.a(parser.cpp.obj):parser.cpp:(.text+0xa8): undefine
d reference to `_imp___ZN8QVariantD1Ev'
CMakeFiles\qjson.dir/objects.a(parser.cpp.obj):parser.cpp:(.text+0xc8): undefine
d reference to `_imp___ZN8QVariantD1Ev'
CMakeFiles\qjson.dir/objects.a(parser.cpp.obj):parser.cpp:(.text+0x10f) : undefin
ed reference to `_imp___ZN7QStringaSERKS_'
CMakeFiles\qjson.dir/objects.a(parser.cpp.obj):parser.cpp:(.text+0x213) : undefin
ed reference to `_imp___ZNK9QIODevice6isOpenEv'
CMakeFiles\qjson.dir/objects.a(parser.cpp.obj):parser.cpp:(.text+0x298) : undefin
ed reference to `_imp___ZNK14QMessageLogger8criticalEPKcz'
CMakeFiles\qjson.dir/objects.a(parser.cpp.obj):parser.cpp:(.text+0x2b6) : undefin
ed reference to `_imp___ZNK9QIODevice10isReadableEv'
CMakeFiles\qjson.dir/objects.a(parser.cpp.obj):parser.cpp:(.text+0x302) : undefin
ed reference to `_imp___ZNK14QMessageLogger8criticalEPKcz'
CMakeFiles\qjson.dir/objects.a(parser.cpp.obj):parser.cpp:(.text+0x49d) : undefin
ed reference to `_imp___ZN8QVariantC1ERKS_'
CMakeFiles\qjson.dir/objects.a(parser.cpp.obj):parser.cpp:(.text+0x51d) : undefin
ed reference to `_imp___ZN7QBufferC1EP7QObject'
CMakeFiles\qjson.dir/objects.a(parser.cpp.obj):parser.cpp:(.text+0x546) : undefin
ed reference to `_imp___ZN7QBuffer4openE6QFlagsIN9QIODevice12OpenM odeFlagEE'
CMakeFiles\qjson.dir/objects.a(parser.cpp.obj):parser.cpp:(.text+0x577) : undefin
ed reference to `_imp___ZN7QBuffer4seekEx'
CMakeFiles\qjson.dir/objects.a(parser.cpp.obj):parser.cpp:(.text+0x5a7) : undefin
ed reference to `_imp___ZN7QBufferD1Ev'
CMakeFiles\qjson.dir/objects.a(parser.cpp.obj):parser.cpp:(.text+0x5bb) : undefin
ed reference to `_imp___ZN7QBufferD1Ev'
c:/mingw/bin/../lib/gcc/mingw32/4.8.1/../../../../mingw32/bin/ld.exe: CMakeFiles
\qjson.dir/objects.a(parser.cpp.obj): bad reloc address 0x10 in section `.text$_
ZN14QMessageLoggerC1EPKciS1_[__ZN14QMessageLoggerC1EPKciS1_]'
collect2.exe: error: ld returned 1 exit status
src\CMakeFiles\qjson.dir\build.make:272: recipe for target 'src/libqjson.dll' fa
iled
mingw32-make[2]: *** [src/libqjson.dll] Error 1
CMakeFiles\Makefile2:109: recipe for target 'src/CMakeFiles/qjson.dir/all' faile
d
mingw32-make[1]: *** [src/CMakeFiles/qjson.dir/all] Error 2
Makefile:115: recipe for target 'all' failed
mingw32-make: *** [all] Error 2

[ChrisW67]

So you are not using MSVC 2010, you are trying to build with MingW. QJson is failing to link because it looks like CMake has not correctly located Qt, or has created an incorrect linker command.

If it had compiled and linked (it has not) then the resulting library file is libqjson.dll and the reference from the other project should not include the zero.

LIBS += -Lc:/path/to/qjson -lqjson

LIBS += -Lc:/path/to/qjson -lqjson

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