FWD » Build and Source Control

Environment¶

Windows VirtualBox VM is set up by following the steps in Windows 11 Virtual Machine Setup with FWD v4 and the Testcase Project

java version "1.8.0_341" 
Java(TM) SE Runtime Environment (build 1.8.0_341-b10)
Java HotSpot(TM) 64-Bit Server VM (build 25.341-b10, mixed mode)

Code¶

Latest p2j trunk (r14483) clean checkout.

Steps to reproduce¶

Run gradlew all.

Issue¶

The build fails on gradle task ant-native. Run gradle ant-native --debug to debug it.

22:57:57.563 [INFO] [org.gradle.api.internal.project.ant.AntLoggingAdapter] [ant:exec] C:\clean\trunk\build\native>gcc -g -Wall -s -LC:\Java\jdk1.8.0_341\jre/lib/amd64/server/ -DNDEBUG -D_UNICODE  -m64 -IC:\Java\jdk1.8.0_341\jre/..//include -IC:\Java\jdk1.8.0_341\jre/..//include/win32 -IC:\clean\trunk/src/native C:\clean\trunk/src/native\winspawn.c -o ..\..\build\native\spawn.exe -ljvm -m64
22:57:58.366 [INFO] [org.gradle.api.internal.project.ant.AntLoggingAdapter] [ant:exec] make[1]: Leaving directory `C:/clean/trunk/build/native'
22:57:58.367 [INFO] [org.gradle.api.internal.project.ant.AntLoggingAdapter] [ant:exec] c:/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.9.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -ljvm
22:57:58.367 [INFO] [org.gradle.api.internal.project.ant.AntLoggingAdapter] [ant:exec] collect2.exe: error: ld returned 1 exit status
22:57:58.367 [INFO] [org.gradle.api.internal.project.ant.AntLoggingAdapter] [ant:exec] make[1]: *** [build] Error 1
22:57:58.367 [INFO] [org.gradle.api.internal.project.ant.AntLoggingAdapter] [ant:exec] make: *** [spawn] Error 2
22:57:57.212 [LIFECYCLE] [class org.gradle.internal.buildevents.TaskExecutionLogger]
22:57:57.212 [LIFECYCLE] [class org.gradle.internal.buildevents.TaskExecutionLogger] > Task :ant-native FAILED

The gcc command in src/native/makefile.spawn has received LDFLAGS+=-ljvm. -ljvm option is resolved as libjvm, which can be found in GCD Linux workstation under /usr/lib/libjvm.so (symlink to /usr/lib/jvm/default-java/jre/lib/amd64/server/libjvm.so created by the initial setup).

In Windows the same file is found under %JAVA_HOME%\jre\bin\server and is called jvm.dll. Even though the path is in the System Environment PATH, the library cannot be found and it seems that's because the command looks for a file called libjvm instead jvm.

Temporal solution¶

Replace -ljvm in src/native/makefile.spawn and src/native/makefile.launcher with the full path to the library %JAVA_HOME%\jre\bin\server\jvm.dll.