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Split the LDFLAGS make variable into two parts: LDFLAGS is now used for

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linking both executables and shared libraries, and we add on LDFLAGS_EX when
linking executables or LDFLAGS_SL when linking shared libraries.  This
provides a significantly cleaner way of dealing with link-time switches than
the former behavior.  Also, make sure that the various platform-specific
%.so: %.o rules incorporate LDFLAGS and LDFLAGS_SL; most of them missed that
before.  (I did not add these variables for the platforms that invoke $(LD)
directly, however.  It's not clear if we can do that safely, since for the
most part we assume these variables use CC command-line syntax.)

Per gripe from Aaron Swenson and subsequent investigation.
This commit is contained in:
Tom Lane
2010-07-05 18:54:38 +00:00
parent eb81b6509f
commit 291a957745
49 changed files with 183 additions and 135 deletions
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6
configure.in
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@ -1,5 +1,5 @@
dnl Process this file with autoconf to produce a configure script.
dnl $PostgreSQL: pgsql/configure.in,v 1.630 2010/06/04 07:28:30 scrappy Exp $
dnl $PostgreSQL: pgsql/configure.in,v 1.631 2010/07/05 18:54:37 tgl Exp $
dnl
dnl Developers, please strive to achieve this order:
dnl
@ -785,7 +785,8 @@ AC_SUBST(ELF_SYS)
CPPFLAGS="$CPPFLAGS $INCLUDES"
LDFLAGS="$LDFLAGS $LIBDIRS"
AC_ARG_VAR(LDFLAGS_SL, [linker flags for shared library linking])
AC_ARG_VAR(LDFLAGS_EX, [extra linker flags for linking executables only])
AC_ARG_VAR(LDFLAGS_SL, [extra linker flags for linking shared libraries only])
PGAC_PROG_LD
AC_SUBST(LD)
@ -1770,7 +1771,6 @@ fi
# If compiler will take -Wl,--as-needed (or various platform-specific
# spellings thereof) then add that to LDFLAGS. This is much easier than
# trying to filter LIBS to the minimum for each executable.
# (Note that shared library links won't use this switch, though.)
# On (at least) some Red-Hat-derived systems, this switch breaks linking to
# libreadline; therefore we postpone testing it until we know what library
# dependencies readline has. The test code will try to link with $LIBS.