Обсуждение: Configure problem (and fix).

I have come across a problem where the code generated by autoconf does not
subsitute correct values for the following variables:

    bindir        sbindir        libexecdir
    datadir        sysconfdir    sharedstatedir
    localstatedir    libdir        includedir
    oldincludedir    infodir        mandir

The problem is that they reference the variables, 'prefix' and 'exec_prefix'
but those variables are not expanded in the subsitutions.  For example,
referencing 'libdir' in an *.in file will have "${exec_prefix}/lib" placed in
the resulting output file.  It should be "/usr/local/pgsql/lib" (if the
default exec_prefix (and prefix) value is used).  The first patch
(uw7-1.patch) will correct the problem, which causes an incorrect
src/pl/plpgsql/src/mklang.sql file to be generated.

The second patch:

    1.  Adds a file (mklang.sql) that can be used to add the language
        definitions for PL/TCL to a database.

    2.  Generalizes the mklang.sql in src/pl/plpgsql/test so that it will
        reference the correct location for the plpgsql.so shared library.

    3.  Generalizes the test_mklang.sql file in src/pl/tcl/test so that is will
        reference the correct localtion for the pltcl.so shared library.

IMPORTANT: Do not apply the second patch without applying the first patch!

____       | Billy G. Allie    | Domain....: Bill.Allie@mug.org
|  /|      | 7436 Hartwell     | Compuserve: 76337,2061
|-/-|----- | Dearborn, MI 48126| MSN.......: B_G_Allie@email.msn.com
|/  |LLIE  | (313) 582-1540    |

I have come across a problem where the code generated by autoconf does not   subsitute correct values for the
followingvariables:
 
   bindir        sbindir        libexecdir   datadir        sysconfdir    sharedstatedir   localstatedir    libdir
 includedir   oldincludedir    infodir        mandir
 

The normal usage is fine for things like Makefiles that know about
environment variables and do their own expansion (i.e., the vast
majority of the usage of these variables).  In this one instance we
are constructing *.sql files that can't expand environment variables
and hence need to do that in advance during configuration.

It seems much cleaner to do the following:

- keep the unexpanded versions in the Makefiles (since it reduces cluttered duplication and uses variables as they
shouldbe used for indirect references), and
 

- introduce a new expanded variable for this purpose

The patches below replace Billie's and accomplish his intent of having
the *.sql files refer to the correct libraries without needlessly
expanding ALL the variables everywhere.

Note that the only difference from his patches for *.sql files is to
use @expanded_libdir@ instead of @libdir@.  The difference for
configure.in is to create the variable $expanded_libdir without
affecting the rest of the "normal" variables.

Please use this set of patches instead of his.

Cheers,
Brook

===========================================================================
--- configure.in.orig    Fri Oct 23 01:00:15 1998
+++ configure.in    Sat Oct 24 12:06:13 1998
@@ -905,6 +905,15 @@    AC_SUBST(USE_ODBC)fi
+dnl expand some variables for use in files (e.g., *.sql)
+dnl without environment variables defined
+
+ice_save_exec_prefix=${exec_prefix}
+test "x$exec_prefix" = xNONE && eval exec_prefix=${prefix}
+eval expanded_libdir=${libdir}
+exec_prefix=${ice_save_exec_prefix}
+AC_SUBST(expanded_libdir)
+AC_OUTPUT(    GNUmakefile    Makefile.global
===========================================================================
--- pl/plpgsql/src/mklang.sql.in.orig    Sun Oct 11 22:55:03 1998
+++ pl/plpgsql/src/mklang.sql.in    Sat Oct 24 11:34:16 1998
@@ -5,7 +5,7 @@--create function plpgsql_call_handler() returns opaque
-    as '@libdir@/plpgsql.so'
+    as '@expanded_libdir@/plpgsql.so'    language 'C';create trusted procedural language 'plpgsql'
===========================================================================
*** pl/plpgsql/test/mklang.sql.in.orig    Fri Oct 23 23:44:39 1998
--- pl/plpgsql/test/mklang.sql.in    Fri Oct 23 23:44:00 1998
***************
*** 0 ****
--- 1,14 ----
+ --
+ -- PL/pgSQL language declaration
+ --
+ -- $Header: /usr/local/cvsroot/pgsql/src/pl/plpgsql/src/mklang.sql.in,v 1.1 1998/10/12 04:55:03 momjian Exp $
+ --
+ 
+ create function plpgsql_call_handler() returns opaque
+     as '@expanded_libdir@/plpgsql.so'
+     language 'C';
+ 
+ create trusted procedural language 'plpgsql'
+     handler plpgsql_call_handler
+     lancompiler 'PL/pgSQL';
+ 
*** pl/tcl/test/test_mklang.sql.in.orig    Fri Oct 23 23:46:14 1998
--- pl/tcl/test/test_mklang.sql.in    Sat Oct 24 00:18:35 1998
***************
*** 0 ****
--- 1,9 ----
+ 
+ create function pltcl_call_handler() returns opaque
+     as '@expanded_libdir@/pltcl.so'
+     language 'C';
+ 
+ create trusted procedural language 'pltcl'
+     handler pltcl_call_handler
+     lancompiler 'PL/Tcl';
+ 
*** pl/tcl/mklang.sql.in.orig    Sat Oct 24 00:20:31 1998
--- pl/tcl/mklang.sql.in    Sat Oct 24 00:18:23 1998
***************
*** 0 ****
--- 1,14 ----
+ --
+ -- PL/TCL language declaration
+ --
+ -- ## Insert RCS Header Here ##
+ --
+ 
+ create function pltcl_call_handler() returns opaque
+     as '@expanded_libdir@/pltcl.so'
+     language 'C';
+ 
+ create trusted procedural language 'pltcl'
+     handler pltcl_call_handler
+     lancompiler 'PL/Tcl';
+ 
*** configure.in.orig    Fri Oct 23 23:42:40 1998
--- configure.in    Fri Oct 23 23:56:13 1998
***************
*** 954,958 ****
--- 954,961 ----     interfaces/odbc/Makefile.global     pl/plpgsql/src/Makefile     pl/plpgsql/src/mklang.sql
+     pl/plpgsql/test/mklang.sql     pl/tcl/mkMakefile.tcldefs.sh
+     pl/tcl/mklang.sql
+     pl/tcl/test/test_mklang.sql )