Source: postgresql-9.4
Version: 9.4~beta2-1
Severity: wishlist
Tags: patch
User: [email protected]
Usertags: alpha
postgresql-9.4 FTBFS on alpha. From the build log [1]:
cc -g -O2 -Wformat -Werror=format-security -I/usr/include/mit-krb5 -fPIC -pie
-DLINUX_OOM_SCORE_ADJ=0 -Wall -Wmissing-prototypes -Wpointer-arith
-Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute
-Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -g
-I../../../src/include -I/«PKGBUILDDIR»/build/../src/include
-D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -I/usr/include/libxml2 -I/usr/include/tcl8.6
-c -o bgworker.o /«PKGBUILDDIR»/build/../src/backend/postmaster/bgworker.c
/tmp/ccNKo8Fb.s: Assembler messages:
/tmp/ccNKo8Fb.s:764: Error: unknown opcode `rmb'
as: BFD (GNU Binutils for Debian) 2.24.51.20140709 internal error, aborting at
../../gas/write.c line 603 in size_seg
This occurs because in src/include/storage/barrier.h the definition of
pg_read_barrier() for Alpha maps to the CPU instruction "rmb" but there
is no such CPU instruction on Alpha!
I attach a patch that fixes the pg_read_barrier() definition to use the
correct CPU instruction for a read memory barrier on Alpha. With that
postgresql-9.4 builds to completion on Alpha.
Cheers
Michael.
[1]
http://buildd.debian-ports.org/status/fetch.php?pkg=postgresql-9.4&arch=alpha&ver=9.4~beta2-1&stamp=1406489832
Index: postgresql-9.4-9.4~beta2/src/include/storage/barrier.h
===================================================================
--- postgresql-9.4-9.4~beta2.orig/src/include/storage/barrier.h
+++ postgresql-9.4-9.4~beta2/src/include/storage/barrier.h
@@ -117,7 +117,7 @@ extern slock_t dummy_spinlock;
* read barrier to cover that case. We might need to add that later.
*/
#define pg_memory_barrier() __asm__ __volatile__ ("mb" : : : "memory")
-#define pg_read_barrier() __asm__ __volatile__ ("rmb" : : : "memory")
+#define pg_read_barrier() __asm__ __volatile__ ("mb" : : : "memory")
#define pg_write_barrier() __asm__ __volatile__ ("wmb" : : : "memory")
#elif defined(__hppa) || defined(__hppa__) /* HP PA-RISC */
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