On 2011-02-23 at 09:18 +0100, Heiko Schlichting wrote:
> But if you want to use POSIX features it is possible by setting environment
> variable _XPG to 1. From sh(1):

*sobs quietly*

Okay, my preference is to keep the $(...) as being a cleaner syntax and
export _XPG=1 to get something approximating POSIX.

Does this patch work for you?

[I won't reply tonight]

---
 doc/doc-txt/ChangeLog        |    2 ++
 src/scripts/lookups-Makefile |   28 ++++++++++++++++++++++------
 2 files changed, 24 insertions(+), 6 deletions(-)

diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog
index 04b643f..b733fdd 100644
--- a/doc/doc-txt/ChangeLog
+++ b/doc/doc-txt/ChangeLog
@@ -76,6 +76,8 @@ NM/05 Fix to spam.c to accommodate older gcc versions which 
dislike
       variable declaration deep within a block.  Bug and patch from
       Dennis Davis.
 
+PP/15 lookups-Makefile IRIX compatibilty coercion.
+
 
 Exim version 4.74
 -----------------
diff --git a/src/scripts/lookups-Makefile b/src/scripts/lookups-Makefile
index 7f45eea..cd0a51b 100755
--- a/src/scripts/lookups-Makefile
+++ b/src/scripts/lookups-Makefile
@@ -2,13 +2,29 @@
 
 # We turn the configure-built build-$foo/lookups/Makefile.predynamic into 
Makefile
 
-if [ -x /usr/xpg4/bin/sh ] && [ -z "$EXIM_BLOCK_XPG4_LOOP" ]
+# We always re-exec ourselves at least once, because it's the cleanest and
+# most portable way to turn on various features we expect of POSIX sh.
+if [ -z "$EXIM_LOOKUP_MAKEFILE_ADJUSTED" ]
 then
-  EXIM_BLOCK_XPG4_LOOP=yes
-  export EXIM_BLOCK_XPG4_LOOP
-  PATH="/usr/xpg4/bin:$PATH"
-  export PATH
-  exec /usr/xpg4/bin/sh "$0" "$@"
+  SHELL=/bin/sh
+  EXIM_LOOKUP_MAKEFILE_ADJUSTED=yes
+  export EXIM_LOOKUP_MAKEFILE_ADJUSTED
+
+  # Solaris sh and tr are problematic until we get xpg4 variants
+  if [ -x /usr/xpg4/bin/sh ]
+  then
+    PATH="/usr/xpg4/bin:$PATH"
+    export PATH
+    SHELL=/usr/xpg4/bin/sh
+    export SHELL
+  fi
+
+  # IRIX uses /bin/ksh for sh but in a compatibility mode unless $_XPG == 1,
+  # where said compatibility mode disables $(...)
+  _XPG=1
+  export _XPG
+
+  exec "$SHELL" "$0" "$@"
 fi
 
 input=lookups/Makefile.predynamic
-- 
1.7.4.1


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