postgresql: Build man pages and minor tweaks

disabled-packages/postgresql/build.sh

@@ -5,20 +5,27 @@ TERMUX_PKG_VERSION=9.6.2
 TERMUX_PKG_SRCURL=https://ftp.postgresql.org/pub/source/v$TERMUX_PKG_VERSION/postgresql-$TERMUX_PKG_VERSION.tar.bz2
 TERMUX_PKG_SHA256=0187b5184be1c09034e74e44761505e52357248451b0c854dddec6c231fe50c9
 TERMUX_PKG_DEPENDS="openssl, libcrypt, readline, libandroid-shmem"
+# - pgac_cv_prog_cc_ldflags__Wl___as_needed: Inform that the linker supports as-needed. It's
+#   not stricly necessary but avoids unnecessary linking of binaries.
+# - USE_UNNAMED_POSIX_SEMAPHORES: Avoid using System V semaphores which are disabled on Android.
+# - with-system-tzdata: Doesn't currently work as Android uses a single timezone file. But
+#   if not specified the build uses zic to build timezone files using hard links, which doesn't
+#   work on Android 6.0+. TODO: Either patch to work with the combined timezone file, or
+#   replace the hard links with symlinks.
 TERMUX_PKG_EXTRA_CONFIGURE_ARGS="
+pgac_cv_prog_cc_ldflags__Wl___as_needed=yes
 USE_UNNAMED_POSIX_SEMAPHORES=1
 --with-openssl
---without-gssapi
---with-readline
+--with-system-tzdata=/system/usr/share/zoneinfo
 "
 TERMUX_PKG_EXTRA_MAKE_ARGS=" -s"
-
-termux_step_pre_configure () {
-	LDFLAGS+=" -llog"
-}
+TERMUX_PKG_RM_AFTER_INSTALL="lib/libecpg* bin/ecpg share/man/man1/ecpg.1"
 
 termux_step_post_make_install() {
-	# Sync with postgresql-contrib.subpackage.sh.
+	# Man pages are not installed by default:
+	make -C doc/src/sgml install-man
+
+	# Sync with postgresql-contrib.subpackage.sh:
 	for contrib in hstore pgcrypto pg_stat_statements; do
 		(cd contrib/$contrib && make -s -j $TERMUX_MAKE_PROCESSES install)
 	done

disabled-packages/postgresql/src-backend-Makefile.patch

@@ -5,7 +5,7 @@ diff -u -r ../postgresql-9.6.1/src/backend/Makefile ./src/backend/Makefile
  LIBS += -lsystemd
  endif
  
-+LIBS += -landroid-shmem
++LIBS += -landroid-shmem -llog
 +
  ##########################################################################