I am attempting to build Slony 1.2.0 on a 64-bit machine running CentOS 7 and Postgresql 9.2.15.

Running the configure portion appears to work fine, as far as I can tell.  However, when I attempt to run the gmake all step, I get the block of errors below.

[####@#### slony1-1.2.0]# gmake all
gmake[1]: Entering directory `/home/slony/slony1-1.2.0/src'
gmake[2]: Entering directory `/home/slony/slony1-1.2.0/src/xxid'
gcc -g -O2 -fpic -I../.. -I/usr/include/ -I/usr/include/pgsql/server/  -c -o xxid.o xxid.c
xxid.c: In function â_Slony_I_getMinXidâ:
xxid.c:231:6: error: âSerializableSnapshotâ undeclared (first use in this function)
  if (SerializableSnapshot == NULL)
      ^
xxid.c:231:6: note: each undeclared identifier is reported only once for each function it appears in
xxid.c: In function â_Slony_I_getMaxXidâ:
xxid.c:244:6: error: âSerializableSnapshotâ undeclared (first use in this function)
  if (SerializableSnapshot == NULL)
      ^
gmake[2]: *** [xxid.o] Error 1
gmake[2]: Leaving directory `/home/slony/slony1-1.2.0/src/xxid'
gmake[1]: *** [all] Error 2
gmake[1]: Leaving directory `/home/slony/slony1-1.2.0/src'
gmake: *** [all] Error 2


I've tried to look that message up, but everything I've seen online seems to indicate that I'm missing some set of postgresql library files.   I've verified, to the best of my ability, that I've got the same packages installed on this machine as on a previous one where slony is running properly.  (The other, working machine is also running 64-bit CentOS.)

The postgresql packages I have installed on this machine are, as shown in 'yum list installed':
postgresql.x86_64                     9.2.15-1.el7_2                  @updates
postgresql-contrib.x86_64             9.2.15-1.el7_2                  @updates
postgresql-devel.x86_64               9.2.15-1.el7_2                  @updates
postgresql-docs.x86_64                9.2.15-1.el7_2                  @updates
postgresql-libs.x86_64                9.2.15-1.el7_2                  @updates
postgresql-server.x86_64              9.2.15-1.el7_2                  @updates

Please, help me to determine what I'm missing, whether it's some uninstalled package, or whether it's something completely different that I simply can't see.

Thank you,
Andrew Edson
Application Software, Inc.

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