C多定义错误Netbeans

Question

I'm trying to build some native libraries in C that will speed up the monte-carlo simulation for a Java project. I'm doing this on Netbeans 7.0.1, using MINGW

I'm using the mtwist source code of Geof Kuenning ( http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/emt.html ) to provide Mersenne Twister pseudorandom numbers.

I have three different models to simulate, and each compiles fine on its own (with output to file rather than using the JNI). However, when I combine the three models under the JNI header file, I start to get a long list of errors when I try to build:

CLEAN SUCCESSFUL (total time: 7s) "/usr/bin/make" -f nbproject/Makefile-Debug.mk QMAKE= SUBPROJECTS= .build-conf make[1]: Entering directory /c/Users/Tom/Documents/LongMemoryModels/longMemModels' "/usr/bin/make" -f nbproject/Makefile-Debug.mk dist/Debug/MinGW_1- Windows/liblongMemModels.dll make[2]: Entering directory /c/Users/Tom/Documents/LongMemoryModels/longMemModels' mkdir -p build/Debug/MinGW_1-Windows rm -f build/Debug/MinGW_1-Windows/longmem.od gcc.exe -std=c99 -c -g -I../../../../../Program\\ Files/Java/jdk1.7.0/include/ -I../../../../../Program\\ Files/Java/jdk1.7.0/include/win32 -MMD -MP -MF build/Debug/MinGW_1-Windows/longmem.od -o build/Debug/MinGW_1-Windows/longmem.o longmem.c mkdir -p build/Debug/MinGW_1-Windows/_ext/2069311947 rm -f build/Debug/MinGW_1-Windows/_ext/2069311947/mtwist.od gcc.exe -std=c99 -c -g -I../../../../../Program\\ Files/Java/jdk1.7.0/include/ -I../../../../../Program\\ Files/Java/jdk1.7.0/include/win32 -MMD -MP -MF build/Debug/MinGW_1-Windows/_ext/20693 11947/mtwist.od -o build/Debug/MinGW_1-Windows/_ext/2069311947/mtwist.o ../../../../../cinclude/mtwist/mtwist.c mkdir -p build/Debug/MinGW_1-Windows/_ext/2069311947 rm -f build/Debug/MinGW_1-Windows/_ext/2069311947/randistrs.od gcc.exe -std=c99 -c -g -I../../../../../Program\\ Files/Java/jdk1.7.0/include/ -I../../../../../Program\\ Files/Java/jdk1.7.0/include/win32 -MMD -MP -MF build/Debug/MinGW_1-Windows/_ext/2069311947/randistrs.od -o build/Debug/MinGW_1-Windows/_ext/2069311947/randistrs.o ../../../../../cinclude/mtwist/randistrs.c mkdir -p dist/Debug/MinGW_1-Windows gcc.exe -std=c99 -shared -o dist/Debug/MinGW_1-Windows/liblongMemModels.dll build/Debug/MinGW_1-Windows/longmem.o build/Debug/MinGW_1-Windows/_ext/2069311947/mtwist.o > build/Debug/MinGW_1-Windows/_ext/2069311947/randistrs.o
build/Debug/MinGW_1-Windows/_ext/2069311947/mtwist.o: In function mts_lrand': C:\\Users\\Tom\\Documents\\LongMemoryModels\\longMemModels/../../../../../cinclude/mtwist/mtwist.h:402: multiple definition of mts_lrand' build/Debug/MinGW_1-Windows/longmem.o:C:/cinclude/mtwist/mtwist.h:402: first defined here build/Debug/MinGW_1-Windows/_ext/2069311947/mtwist.o: In function mts_llrand': C:\\Users\\Tom\\Documents\\LongMemoryModels\\longMemModels/../../../../../cinclude/mtwist/mtwist.h:431: multiple definition of mts_llrand' build/Debug/MinGW_1-Windows/longmem.o:C:/cinclude/mtwist/mtwist.h:431: first defined here [...] build/Debug/MinGW_1-Windows/_ext/2069311947/randistrs.o: In function mts_lrand': C:\\Users\\Tom\\Documents\\LongMemoryModels\\longMemModels/../../../../../cinclude/mtwist/mtwist.h:402: multiple definition of mts_lrand' build/Debug/MinGW_1-Windows/longmem.o:C:/cinclude/mtwist/mtwist.h:402: first defined here build/Debug/MinGW_1-Windows/_ext/2069311947/randistrs.o: In function mts_llrand': C:\\Users\\Tom\\Documents\\LongMemoryModels\\longMemModels/../../../../../cinclude/mtwist/mtwist.h:431: multiple definition of mts_llrand': C:\\Users\\Tom\\Documents\\LongMemoryModels\\longMemModels/../../../../../cinclude/mtwist/mtwist.h:431: multiple definition of mts_llrand' build/Debug/MinGW_1-Windows/longmem.o:C:/cinclude/mtwist/mtwist.h:431: first defined here [...] make[2]: Leaving directory /c/Users/Tom/Documents/LongMemoryModels/longMemModels' make[1]: Leaving directory /c/Users/Tom/Documents/LongMemoryModels/longMemModels'

collect2.exe: error: ld returned 1 exit status make[2]: * [dist/Debug/MinGW_1-Windows/liblongMemModels.dll] Error 1 make[1]: [.build-conf] Error 2 make: * * [.build-impl] Error 2

BUILD FAILED (exit value 2, total time: 22s)

(here the elipsis, [...], denotes similar errors that I have omitted)

As you can see, the multiple inclusions seem to relate to the mtwist.h header rather than the JNI header. Moreover, I get the same errors trying to build the JNI project even when mtwist has already been successfully built as a static or dynamic library...

I don't want this question to be too much of an essay, and I'm hoping that error will reveal an obvious error to someone more savvy than me. BUT, I'll post source code too, if this isn't enough to point to a solution.

Please help me resolve this build error if you can. Tom

EDIT: to make the include structure clearer than in the comments... In the current arrangement:

• [JNI models header].h includes jni.h
• mtwist.h includes stdio.h, stdint.h
• randistrs.h, includes mtwist.h
• [individual model functions].c includes stdio.h stdlib.h math.h mtwist/mtwist.h mtwist/randistrs.h jni.h (unnecessary I suppose)
• mtwist.c includes inttypes.h stdio.h stdlib.h sys/timeb.h mtwist.h
• randistrs.c includes mtwist.h randistrs.h math.h stdlib.h

All of the .h files have inclusion guards using #ifndef

Answer 1

我想这是一个包含多个原型的情况。请尝试在mtwist.h中使用#ifdef #endif宏进行防护，以防所有出现错误的原型。