Hello. I am trying to get a mingw32 program to call Java, using JNI. I am getting an error about not being able to find _imp__JNI_CreateJavaVM at 12 I have got conflicting information from the web as to whether the jvm.lib that is supplied in the JDK should work or not. Some information says that it won't work, because the function is stdcall and mingw32 does not prefix the function name with an underscore, while MSVC does. Note that the above reference only has one underscore, instead of the two that show up when running "nm" on jvm.lib: 00000000 I __imp__JNI_CreateJavaVM at 12 U __IMPORT_DESCRIPTOR_jvm 00000000 T _JNI_CreateJavaVM at 12 I have tried a lot of searches and a lot of experiments, but nothing successful. I still can't even answer the basic question of whether it is meant to work out of the box or not. Or whether I need to construct my own "lib" file. Any ideas? Relevant technical info below. Thanks. Paul. C:\paul\devel\jnitest>mingw32-make mingw32-gcc -o mary.exe \ -L "C:\Program Files (x86)\Java\jdk1.8.0_221\lib" \ -ljvm \ -I "C:\Program Files (x86)\Java\jdk1.8.0_221\include" \ -I "C:\Program Files (x86)\Java\jdk1.8.0_221\include\win32" \ mary.c c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: C:\Users\xxx\AppData\Local\Temp\ccqlQomh.o:mary.c:(.text+0x3c): undefined reference to `_imp__JNI_CreateJavaVM at 12' collect2.exe: error: ld returned 1 exit status Makefile:7: recipe for target 'mary.exe' failed mingw32-make: *** [mary.exe] Error 1 C:\paul\devel\jnitest>mingw32-gcc --version mingw32-gcc (MinGW.org GCC-8.2.0-5) 8.2.0 mary.c: ret = JNI_CreateJavaVM(&jvm, (void**)&env, &args);
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