Patrick, > On 7 Feb 2020, at 08:44, Patrick Zhang OS <patr...@os.amperecomputing.com> > wrote: > > Ping..
Pong ;-) > Regards > Patrick > > -----Original Message----- > From: net-dev <net-dev-boun...@openjdk.java.net> On Behalf Of Patrick Zhang OS > Sent: Wednesday, February 5, 2020 8:19 PM > To: Chris Hegarty <chris.hega...@oracle.com>; net-dev > <net-dev@openjdk.java.net> > Subject: RE: RFR: JDK-8238386: (sctp) jdk.sctp/unix/native/libsctp/SctpNet.c > "multiple definition" link errors with GCC10 > > Thanks Chris > > I extracted the SCTP code change from the original patch, for net-dev review > only. Could you please sponsor this? (I do not have push permission), thanks > in advance. > > JBS: https://bugs.openjdk.java.net/browse/JDK-8238386 > Webrev: http://cr.openjdk.java.net/~qpzhang/8238386/webrev.01/ I was able to duplicate the "multiple definition of ..." warnings/errors on my Ubuntu Linux with gcc 8.3 by explicitly specifying -fno-common, temporarily locally patching Lib-jdk.sctp.gmk [*]. Looking at this again, maybe we can avoid the creation of a new Sctp.c file to "house" these few definitions. How about we just move them to SctpNet.? $ hg diff src/jdk.sctp diff --git a/src/jdk.sctp/unix/native/libsctp/Sctp.h b/src/jdk.sctp/unix/native/libsctp/Sctp.h --- a/src/jdk.sctp/unix/native/libsctp/Sctp.h +++ b/src/jdk.sctp/unix/native/libsctp/Sctp.h @@ -322,13 +322,6 @@ #endif /* __linux__ */ -sctp_getladdrs_func* nio_sctp_getladdrs; -sctp_freeladdrs_func* nio_sctp_freeladdrs; -sctp_getpaddrs_func* nio_sctp_getpaddrs; -sctp_freepaddrs_func* nio_sctp_freepaddrs; -sctp_bindx_func* nio_sctp_bindx; -sctp_peeloff_func* nio_sctp_peeloff; - jboolean loadSocketExtensionFuncs(JNIEnv* env); #endif /* !SUN_NIO_CH_SCTP_H */ diff --git a/src/jdk.sctp/unix/native/libsctp/SctpNet.c b/src/jdk.sctp/unix/native/libsctp/SctpNet.c --- a/src/jdk.sctp/unix/native/libsctp/SctpNet.c +++ b/src/jdk.sctp/unix/native/libsctp/SctpNet.c @@ -43,6 +43,13 @@ static const char* nativeSctpLib = "libsctp.so.1"; static jboolean funcsLoaded = JNI_FALSE; +sctp_getladdrs_func* nio_sctp_getladdrs; +sctp_freeladdrs_func* nio_sctp_freeladdrs; +sctp_getpaddrs_func* nio_sctp_getpaddrs; +sctp_freepaddrs_func* nio_sctp_freepaddrs; +sctp_bindx_func* nio_sctp_bindx; +sctp_peeloff_func* nio_sctp_peeloff; + JNIEXPORT jint JNICALL DEF_JNI_OnLoad (JavaVM *vm, void *reserved) { return JNI_VERSION_1_2; -Chris. [*] diff --git a/make/lib/Lib-jdk.sctp.gmk b/make/lib/Lib-jdk.sctp.gmk --- a/make/lib/Lib-jdk.sctp.gmk +++ b/make/lib/Lib-jdk.sctp.gmk @@ -33,7 +33,7 @@ $(eval $(call SetupJdkLibrary, BUILD_LIBSCTP, \ NAME := sctp, \ OPTIMIZATION := LOW, \ - CFLAGS := $(CFLAGS_JDKLIB), \ + CFLAGS := -fno-common $(CFLAGS_JDKLIB), \ DISABLED_WARNINGS_gcc := undef, \ DISABLED_WARNINGS_clang := undef, \ EXTRA_HEADER_DIRS := \
