I'm using for the first time the maven nar plugin to compile a bounce of corba IDL files in C++. I have generated the stubs and skeletons with success by using the exec plugin and omniidl and now I have under src/ all the *.C and *.H files.
We are using an internal Nexus repository to retrieve the NAR dependencies and so far I managed to compile all the *.o files. However, the linker fails with the following message:
[INFO] 21 files were compiled.
[INFO] 21 files were compiled.
[INFO] Linking...
[INFO] Linking...
[INFO] Starting link {4.8 -shared -L/home/dev/repos/idl/cpp-idl/bin/nar/omniORB4-4.2.0-R1-amd64-Linux-gpp-shared/lib/amd64-Linux-gpp/shared -lomniORB4-4.2.0-R1 -L/home/dev/repos/idl/cpp-idl/bin/nar/omnithread-4.2.0-R1-amd64-Linux-gpp-shared/lib/amd64-Linux-gpp/shared -lomnithread-4.2.0-R1 -L/home/dev/repos/idl/cpp-idl/bin/nar/c-2.19-R1-amd64-Linux-gpp-shared/lib/amd64-Linux-gpp/shared -lc-2.19-R1 -L/home/dev/repos/idl/cpp-idl/bin/nar/m-2.19-R1-amd64-Linux-gpp-shared/lib/amd64-Linux-gpp/shared -lm-2.19-R1 -L/home/dev/repos/idl/cpp-idl/bin/nar/stdc__plus__plus-4.8.3+r212056-R1-amd64-Linux-gpp-shared/lib/amd64-Linux-gpp/shared -lstdc__plus__plus-4.8.3+r212056-R1 -fexceptions -lstdc++}
[INFO] Starting link {4.8 -shared -L/home/dev/repos/idl/cpp-idl/bin/nar/omniORB4-4.2.0-R1-amd64-Linux-gpp-shared/lib/amd64-Linux-gpp/shared -lomniORB4-4.2.0-R1 -L/home/dev/repos/idl/cpp-idl/bin/nar/omnithread-4.2.0-R1-amd64-Linux-gpp-shared/lib/amd64-Linux-gpp/shared -lomnithread-4.2.0-R1 -L/home/dev/repos/idl/cpp-idl/bin/nar/c-2.19-R1-amd64-Linux-gpp-shared/lib/amd64-Linux-gpp/shared -lc-2.19-R1 -L/home/dev/repos/idl/cpp-idl/bin/nar/m-2.19-R1-amd64-Linux-gpp-shared/lib/amd64-Linux-gpp/shared -lm-2.19-R1 -L/home/dev/repos/idl/cpp-idl/bin/nar/stdc__plus__plus-4.8.3+r212056-R1-amd64-Linux-gpp-shared/lib/amd64-Linux-gpp/shared -lstdc__plus__plus-4.8.3+r212056-R1 -fexceptions -lstdc++}
[ERROR] /usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../x86_64-suse-linux/bin/ld: cannot find -lomniORB4-4.2.0-R1
[ERROR] /usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../x86_64-suse-linux/bin/ld: cannot find -lomnithread-4.2.0-R1
[ERROR] /usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../x86_64-suse-linux/bin/ld: cannot find -lc-2.19-R1
[ERROR] /usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../x86_64-suse-linux/bin/ld: cannot find -lm-2.19-R1
[ERROR] /usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../x86_64-suse-linux/bin/ld: cannot find -lstdc__plus__plus-4.8.3+r212056-R1
[ERROR] collect2: error: ld returned 1 exit status
The thing is that for instance the folder
/home/dev/repos/idl/cpp-idl/bin/nar/omniORB4-4.2.0-R1-amd64-Linux-gpp-shared/lib/amd64-Linux-gpp/shared
contains the following shared objects:
libomniORB4.so libomniORB4.so.2 libomniORB4.so.2.0
and the linker tries to link against the library name containing the full version (the dependency version)
-lomniORB4-4.2.0-R1
My questions are the following:
Here is the pom section which configures the NAR plugin:
<build>
<defaultGoal>install</defaultGoal>
<plugins>
<plugin>
<groupId>com.github.maven-nar</groupId>
<artifactId>nar-maven-plugin</artifactId>
<configuration>
<libraries>
<library>
<type>shared</type>
</library>
</libraries>
<cpp>
<name>g++</name>
<sourceDirectory>${project.basedir}/src</sourceDirectory>
<options>
<option>-g</option>
</options>
<includes>
<include>**/*.C</include>
</includes>
<includePaths>
<includePath>${project.basedir}/src</includePath>
</includePaths>
</cpp>
</configuration>
</plugin>
....
Thanks.
The error was in the dependency NAR content which was malformed.