[1/1] package/openjdk: fix building against gcc10

From: Adam Duskett <Aduskett@gmail.com>

GCC10 set's the -fno-common flag by default which causes OpenJDK to fail when
compiling.

Because there is no easy way to create a patch from the OpenJDK mercurial
repository, this patch was created by hand from the three commits listed in
the provided patch itself.

Signed-off-by: Adam Duskett <Aduskett@gmail.com>
---
 package/openjdk/0001-fix-gcc-10-support.patch | 119 ++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 package/openjdk/0001-fix-gcc-10-support.patch

Adam, All,

On 2020-06-17 13:19 -0700, aduskett@gmail.com spake thusly:
> From: Adam Duskett <Aduskett@gmail.com>
> 
> GCC10 set's the -fno-common flag by default which causes OpenJDK to fail when
> compiling.
> 
> Because there is no easy way to create a patch from the OpenJDK mercurial
> repository, this patch was created by hand from the three commits listed in
> the provided patch itself.
> 
> Signed-off-by: Adam Duskett <Aduskett@gmail.com>
> ---
>  package/openjdk/0001-fix-gcc-10-support.patch | 119 ++++++++++++++++++
>  1 file changed, 119 insertions(+)
>  create mode 100644 package/openjdk/0001-fix-gcc-10-support.patch
> 
> diff --git a/package/openjdk/0001-fix-gcc-10-support.patch b/package/openjdk/0001-fix-gcc-10-support.patch

openjdk has a version choice, so we have to have the patch in a
per-version sub-directory, even if the patch applies sas-is to both
versions.

Regards,
Yann E. MORIN.

> new file mode 100644
> index 0000000000..5364c47252
> --- /dev/null
> +++ b/package/openjdk/0001-fix-gcc-10-support.patch
> @@ -0,0 +1,119 @@
> +From 58911e9de888aece29f491995a8b8a31f7d6b424 Mon Sep 17 00:00:00 2001
> +From: Patrick Zhang <patrick.zhang@amperecomputing.com>
> +Date: Wed, 05 Feb 2020 17:14:15 -0700
> +Subject: [PATCH] fix gcc 10 support
> +
> +This patch fixes the "multiple definition" link errors with GCC10 due to
> +GCC10 setting -fno-common by default.
> +
> +This is a combination of the following upstream commits:
> +  - https://hg.openjdk.java.net/jdk/jdk/rev/8e6fa89397ca
> +  - https://hg.openjdk.java.net/jdk/jdk/rev/6925fca95959
> +  - https://hg.openjdk.java.net/jdk/jdk/rev/9e54ea7d9cd9
> +
> +Signed-off-by: Patrick Zhang <patrick.zhang@amperecomputing.com>
> +Signed-off-by: Adam Duskett <Aduskett@gmail.com>
> +---
> + src/java.base/unix/native/libjava/childproc.c        |  1 +
> + src/java.base/unix/native/libjava/childproc.h        |  2 +-
> + .../share/native/libj2gss/NativeFunc.c               |  3 +++
> + .../share/native/libj2gss/NativeFunc.h               |  2 +-
> + src/jdk.sctp/unix/native/libsctp/Sctp.h              | 12 ++++++------
> + src/jdk.sctp/unix/native/libsctp/SctpNet.c           |  7 +++++++
> + 6 files changed, 19 insertions(+), 8 deletions(-)
> +
> +diff --git a/src/java.base/unix/native/libjava/childproc.c b/src/java.base/unix/native/libjava/childproc.c
> +index 811aaeac5..16480bfbf 100644
> +--- a/src/java.base/unix/native/libjava/childproc.c
> ++++ b/src/java.base/unix/native/libjava/childproc.c
> +@@ -34,6 +34,7 @@
> + 
> + #include "childproc.h"
> + 
> ++const char * const *parentPathv;
> + 
> + ssize_t
> + restartableWrite(int fd, const void *buf, size_t count)
> +diff --git a/src/java.base/unix/native/libjava/childproc.h b/src/java.base/unix/native/libjava/childproc.h
> +index 091150930..d57e44b6e 100644
> +--- a/src/java.base/unix/native/libjava/childproc.h
> ++++ b/src/java.base/unix/native/libjava/childproc.h
> +@@ -126,7 +126,7 @@ typedef struct _SpawnInfo {
> +  * The cached and split version of the JDK's effective PATH.
> +  * (We don't support putenv("PATH=...") in native code)
> +  */
> +-const char * const *parentPathv;
> ++extern const char * const *parentPathv;
> + 
> + ssize_t restartableWrite(int fd, const void *buf, size_t count);
> + int restartableDup2(int fd_from, int fd_to);
> +diff --git a/src/java.security.jgss/share/native/libj2gss/NativeFunc.c b/src/java.security.jgss/share/native/libj2gss/NativeFunc.c
> +index da7bc0445..5941f7b5a 100644
> +--- a/src/java.security.jgss/share/native/libj2gss/NativeFunc.c
> ++++ b/src/java.security.jgss/share/native/libj2gss/NativeFunc.c
> +@@ -27,6 +27,9 @@
> + #include <stdlib.h>
> + #include "NativeFunc.h"
> + 
> ++/* global GSS function table */
> ++GSS_FUNCTION_TABLE_PTR ftab;
> ++
> + /* standard GSS method names (ordering is from mapfile) */
> + static const char RELEASE_NAME[]                = "gss_release_name";
> + static const char IMPORT_NAME[]                 = "gss_import_name";
> +diff --git a/src/java.security.jgss/share/native/libj2gss/NativeFunc.h b/src/java.security.jgss/share/native/libj2gss/NativeFunc.h
> +index 82914387c..e4a4981a3 100644
> +--- a/src/java.security.jgss/share/native/libj2gss/NativeFunc.h
> ++++ b/src/java.security.jgss/share/native/libj2gss/NativeFunc.h
> +@@ -277,6 +277,6 @@ typedef struct GSS_FUNCTION_TABLE {
> + typedef GSS_FUNCTION_TABLE *GSS_FUNCTION_TABLE_PTR;
> + 
> + /* global GSS function table */
> +-GSS_FUNCTION_TABLE_PTR ftab;
> ++extern GSS_FUNCTION_TABLE_PTR ftab;
> + 
> + #endif
> +diff --git a/src/jdk.sctp/unix/native/libsctp/Sctp.h b/src/jdk.sctp/unix/native/libsctp/Sctp.h
> +index cc1367f78..46b07db0a 100644
> +--- a/src/jdk.sctp/unix/native/libsctp/Sctp.h
> ++++ b/src/jdk.sctp/unix/native/libsctp/Sctp.h
> +@@ -322,12 +322,12 @@ typedef int sctp_peeloff_func(int sock, sctp_assoc_t id);
> + 
> + #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;
> ++extern sctp_getladdrs_func* nio_sctp_getladdrs;
> ++extern sctp_freeladdrs_func* nio_sctp_freeladdrs;
> ++extern sctp_getpaddrs_func* nio_sctp_getpaddrs;
> ++extern sctp_freepaddrs_func* nio_sctp_freepaddrs;
> ++extern sctp_bindx_func* nio_sctp_bindx;
> ++extern sctp_peeloff_func* nio_sctp_peeloff;
> + 
> + jboolean loadSocketExtensionFuncs(JNIEnv* env);
> + 
> +diff --git a/src/jdk.sctp/unix/native/libsctp/SctpNet.c b/src/jdk.sctp/unix/native/libsctp/SctpNet.c
> +index d40c15aa3..ab9b6e093 100644
> +--- a/src/jdk.sctp/unix/native/libsctp/SctpNet.c
> ++++ b/src/jdk.sctp/unix/native/libsctp/SctpNet.c
> +@@ -43,6 +43,13 @@ static jmethodID isaCtrID = 0;
> + 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;
> +-- 
> +2.26.2
> +
> -- 
> 2.26.2
> 
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