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Re: Link problem on linux [message #40949 is a reply to message #40941]

Fri, 11 October 2013 17:54

Didier
Messages: 680
Registered: November 2008
Location: France

Contributor

I've just done a simple test:
Added plugin/FT_fontsys to Draw01 tutorial, did a complete rebuild and got the following errors:

Quote:

MD5.cpp
SHA1.cpp
----- plugin/png ( GUI GCC SHARED BLITZ LINUX POSIX ) (9 / 10)
pnglib.c
pngupp.cpp
pngreg.icpp
----- Draw01 ( GUI MAIN GCC SHARED BLITZ LINUX POSIX ) (10 / 10)
main.cpp
Core: 55 file(s) built in (0:00.61), 11 msecs / file, duration = 2544 msecs, parallelization 100%
plugin/png: 3 file(s) built in (0:00.02), 7 msecs / file, duration = 359 msecs, parallelization 100%
Draw01: 1 file(s) built in (0:00.18), 188 msecs / file, duration = 416 msecs, parallelization 47%
Linking...
/users/didier/upp.out/tutorial/CtrlCore/GCC.Blitz.Gui.Shared /$blitz.o: In function `_GLOBAL__sub_I__ZN3Upp11ImageBufferC2ERNS_9ImageDrawE':
$blitz.cpp:(.text.startup._GLOBAL__sub_I__ZN3Upp11ImageBuffe rC2ERNS_9ImageDrawE+0x367): undefined reference to `Upp::GetFontInfoSysXft'
$blitz.cpp:(.text.startup._GLOBAL__sub_I__ZN3Upp11ImageBuffe rC2ERNS_9ImageDrawE+0x371): undefined reference to `Upp::GetGlyphInfoSysXft'
collect2: error: ld returned 1 exit status

I verified that the main.conf.h file for Draw01 contained : #define CUSTOM_FONTSYS

==> I'm back to my original question: is "extern xxxx" really accepted in C++ ??? or is my GCC doing me some nasty tricks ???

My GCC is the following :

Quote:

[didier@localhost ~]$ gcc -v
Using built-in specs.
COLLECT_GCC=/usr/bin/gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/i686-redhat-linux/4.7.2 /lto-wrapper
Target: i686-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --disable-build-with-cxx --disable-build-poststage1-with-cxx --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-linker-hash-style=gnu --enable-languages=c,c++,objc,obj-c++,java,fortran,ada,go,lt o --enable-plugin --enable-initfini-array --enable-java-awt=gtk --disable-dssi --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre --enable-libgcj-multifile --enable-java-maintainer-mode --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib --with-ppl --with-cloog --with-tune=generic --with-arch=i686 --build=i686-redhat-linux
Thread model: posix
gcc version 4.7.2 20120921 (Red Hat 4.7.2-2) (GCC)

[Updated on: Fri, 11 October 2013 17:55]

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