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

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.

src/makefiles/Makefile.aix

@@ -37,5 +37,6 @@ MKLDEXPORT=$(top_srcdir)/src/backend/port/aix/mkldexport.sh
 %.exp: %.o
 	$(MKLDEXPORT) $^ >$@
 
+# Rule for building a shared library from a single .o file
 %$(DLSUFFIX): %.o %.exp
 	$(CC) $(CFLAGS) $(LDFLAGS) $(LDFLAGS_SL) -o $@ $*.o -Wl,-bE:$*.exp $(SHLIB_LINK)

src/makefiles/Makefile.bsdi

@@ -20,5 +20,6 @@ else
 CFLAGS_SL =
 endif
 
+# Rule for building a shared library from a single .o file
 %.so: %.o
-	$(CC) $(CFLAGS) -shared -o $@ $<
+	$(CC) $(CFLAGS) $(LDFLAGS) $(LDFLAGS_SL) -shared -o $@ $<

src/makefiles/Makefile.cygwin

@@ -1,4 +1,4 @@
-# $PostgreSQL: pgsql/src/makefiles/Makefile.cygwin,v 1.13 2010/01/20 09:30:07 heikki Exp $
+# $PostgreSQL: pgsql/src/makefiles/Makefile.cygwin,v 1.14 2010/07/05 18:54:38 tgl Exp $
 DLLTOOL= dlltool
 DLLWRAP= dllwrap
 ifdef PGXS
@@ -15,11 +15,6 @@ AROPT = crs
 DLSUFFIX = .dll
 CFLAGS_SL =
 
-%.dll: %.o
-	$(DLLTOOL) --export-all --output-def $*.def $<
-	$(DLLWRAP) -o $@ --def $*.def $< $(SHLIB_LINK)
-	rm -f $*.def
-
 ifneq (,$(findstring backend,$(subdir)))
 ifeq (,$(findstring conversion_procs,$(subdir)))
 ifeq (,$(findstring snowball,$(subdir)))
@@ -42,3 +37,9 @@ endif
 ifneq (,$(findstring src/pl/plpython,$(subdir)))
 override CPPFLAGS+= -DUSE_DL_IMPORT
 endif
+
+# Rule for building a shared library from a single .o file
+%.dll: %.o
+	$(DLLTOOL) --export-all --output-def $*.def $<
+	$(DLLWRAP) -o $@ --def $*.def $< $(SHLIB_LINK)
+	rm -f $*.def

src/makefiles/Makefile.darwin

@@ -1,16 +1,13 @@
 AROPT = crs
-AWK= awk
  
 DLSUFFIX = .so
-CFLAGS_SL =
 
 ifdef PGXS
-BE_DLLLIBS= -bundle_loader $(bindir)/postgres
+  BE_DLLLIBS = -bundle_loader $(bindir)/postgres
 else
-BE_DLLLIBS= -bundle_loader $(top_builddir)/src/backend/postgres
+  BE_DLLLIBS = -bundle_loader $(top_builddir)/src/backend/postgres
 endif
 
-# Rule for building shared libs (currently used only for regression test
-# shlib ... should go away, since this is not really enough knowledge)
+# Rule for building a shared library from a single .o file
 %.so: %.o
-	$(CC) $(CFLAGS) -bundle -o $@ $< $(BE_DLLLIBS)
+	$(CC) $(CFLAGS) $(LDFLAGS) $(LDFLAGS_SL) -bundle -o $@ $< $(BE_DLLLIBS)

src/makefiles/Makefile.dgux

@@ -2,7 +2,8 @@ AROPT = crs
 DLSUFFIX = .so
 CFLAGS_SL = -fpic
 
+# Rule for building a shared library from a single .o file
 %.so: %.o
-	$(CC) -shared -o $@ $<
+	$(CC) $(CFLAGS) $(LDFLAGS) $(LDFLAGS_SL) -shared -o $@ $<
 
 sqlmansect = 5

src/makefiles/Makefile.freebsd

@@ -14,9 +14,10 @@ allow_nonpic_in_shlib = yes
 endif
 
 
+# Rule for building a shared library from a single .o file
 %.so: %.o
 ifdef ELF_SYSTEM
-	$(CC) $(CFLAGS) -shared -o $@ $<
+	$(CC) $(CFLAGS) $(LDFLAGS) $(LDFLAGS_SL) -shared -o $@ $<
 else
 	$(LD) $(LDREL) $(LDOUT) $<.obj -x $<
 	@echo building shared object $@

src/makefiles/Makefile.hpux

@@ -22,7 +22,7 @@ endif
 ifeq ($(with_gnu_ld), yes)
 # XXX what to put here?
 else
-   LDFLAGS += -Wl,-z
+   LDFLAGS_EX += -Wl,-z
 endif
 
 # set up appropriate options for shared library builds
@@ -43,18 +43,17 @@ else
    CFLAGS_SL = +Z
 endif
 
-# Rule for building shared libs (currently used only for regression test
-# shlib ... should go away, since this is not really enough knowledge)
+# Rule for building a shared library from a single .o file
 %$(DLSUFFIX): %.o
 ifeq ($(GCC), yes)
   ifeq ($(with_gnu_ld), yes)
-	$(CC) $(LDFLAGS) -shared -o $@ $< `$(CC) $(LDFLAGS) -print-libgcc-file-name`
+	$(CC) $(CFLAGS) $(LDFLAGS) $(LDFLAGS_SL) -shared -o $@ $< `$(CC) $(LDFLAGS) -print-libgcc-file-name`
   else
 	$(LD) -b -o $@ $< `$(CC) $(LDFLAGS) -print-libgcc-file-name`
   endif
 else
   ifeq ($(with_gnu_ld), yes)
-	$(CC) $(LDFLAGS) -shared -o $@ $<
+	$(CC) $(CFLAGS) $(LDFLAGS) $(LDFLAGS_SL) -shared -o $@ $<
   else
 	$(LD) -b -o $@ $<
   endif

src/makefiles/Makefile.irix

@@ -5,14 +5,15 @@ DLSUFFIX = .so
 # PIC is default
 CFLAGS_SL =
 
-%.so: %.o
-	$(CC) $(CFLAGS) -shared -o $@ $< 
-
 override CPPFLAGS += -U_NO_XOPEN4
 
 ifneq ($(GCC), yes)
-CFLAGS += -woff 1164,1171,1185,1195,1552
+  CFLAGS += -woff 1164,1171,1185,1195,1552
 endif
 LDFLAGS += -Wl,-woff,15 -Wl,-woff,84
 
+# Rule for building a shared library from a single .o file
+%.so: %.o
+	$(CC) $(CFLAGS) $(LDFLAGS) $(LDFLAGS_SL) -shared -o $@ $< 
+
 sqlmansect = 5sql

src/makefiles/Makefile.linux

@@ -12,5 +12,6 @@ else
 CFLAGS_SL = -fpic
 endif
 
+# Rule for building a shared library from a single .o file
 %.so: %.o
-	$(CC) $(CFLAGS) -shared -o $@ $<
+	$(CC) $(CFLAGS) $(LDFLAGS) $(LDFLAGS_SL) -shared -o $@ $<

src/makefiles/Makefile.netbsd

@@ -16,9 +16,10 @@ CFLAGS_SL = -fpic -DPIC
 endif
 
 
+# Rule for building a shared library from a single .o file
 %.so: %.o
 ifdef ELF_SYSTEM
-	$(CC) $(CFLAGS) -shared -o $@ $<
+	$(CC) $(CFLAGS) $(LDFLAGS) $(LDFLAGS_SL) -shared -o $@ $<
 else
 	$(LD) $(LDREL) $(LDOUT) $<.obj -x $<
 	@echo building shared object $@

src/makefiles/Makefile.openbsd

@@ -14,9 +14,10 @@ CFLAGS_SL = -fpic -DPIC
 endif
 
 
+# Rule for building a shared library from a single .o file
 %.so: %.o
 ifdef ELF_SYSTEM
-	$(CC) $(CFLAGS) -shared -o $@ $<
+	$(CC) $(CFLAGS) $(LDFLAGS) $(LDFLAGS_SL) -shared -o $@ $<
 else
 	$(LD) $(LDREL) $(LDOUT) $<.obj -x $<
 	@echo building shared object $@

src/makefiles/Makefile.osf

@@ -3,6 +3,7 @@ DLSUFFIX = .so
 CFLAGS_SL =
 rpath = -rpath '$(rpathdir)'
 
+# Rule for building a shared library from a single .o file
 %.so: %.o
 	$(LD) -shared -expect_unresolved '*' -o $@ $<
 

src/makefiles/Makefile.sco

@@ -8,5 +8,6 @@ else
 CFLAGS_SL = -K PIC
 endif
 
+# Rule for building a shared library from a single .o file
 %.so: %.o
 	$(LD) -G -Bdynamic -o $@ $<

src/makefiles/Makefile.solaris

@@ -1,4 +1,4 @@
-# $PostgreSQL: pgsql/src/makefiles/Makefile.solaris,v 1.14 2008/09/01 08:50:10 petere Exp $
+# $PostgreSQL: pgsql/src/makefiles/Makefile.solaris,v 1.15 2010/07/05 18:54:38 tgl Exp $
 
 AROPT = crs
 
@@ -16,11 +16,12 @@ else
 CFLAGS_SL = -KPIC
 endif
 
+# Rule for building a shared library from a single .o file
 %.so: %.o
 ifeq ($(GCC), yes)
-	$(CC) $(CFLAGS) -shared -o $@ $<
+	$(CC) $(CFLAGS) $(LDFLAGS) $(LDFLAGS_SL) -shared -o $@ $<
 else
-	$(CC) $(CFLAGS) -G -o $@ $<
+	$(CC) $(CFLAGS) $(LDFLAGS) $(LDFLAGS_SL) -G -o $@ $<
 endif
 
 sqlmansect = 5sql

src/makefiles/Makefile.sunos4

@@ -7,5 +7,6 @@ else
 CFLAGS_SL = -PIC
 endif
 
+# Rule for building a shared library from a single .o file
 %.so: %.o
 	$(LD) -assert pure-text -Bdynamic -o $@ $<

src/makefiles/Makefile.svr4

@@ -8,6 +8,7 @@ LDFLAGS += -LD-Blargedynsym
 DLSUFFIX = .so
 CFLAGS_SL =
 
+# Rule for building a shared library from a single .o file
 %.so: %.o
 	$(LD) -G -Bdynamic -o $@ $<
 

src/makefiles/Makefile.ultrix4

@@ -6,5 +6,6 @@ DLSUFFIX = .so
 # "-G 0" works for both DEC cc and GNU cc.
 CFLAGS_SL = -G 0
 
+# Rule for building a shared library from a single .c file
 %.so: %.c
-	$(CC) -c -G 0 $(CPPFLAGS) $(CFLAGS) -o $@ $<
+	$(CC) -c -G 0 $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) $(LDFLAGS_SL) -o $@ $<

src/makefiles/Makefile.univel

@@ -3,6 +3,7 @@ export_dynamic = -Wl,-Bexport
 DLSUFFIX = .so
 CFLAGS_SL = -K PIC
 
+# Rule for building a shared library from a single .o file
 %.so: %.o
 	$(LD) -G -Bdynamic -o $@ $<
 

src/makefiles/Makefile.unixware

@@ -13,6 +13,9 @@ else
 endif
 endif
 
+# Unixware needs threads for everything that uses libpq
+CFLAGS += $(PTHREAD_CFLAGS)
+
 DLSUFFIX = .so
 ifeq ($(GCC), yes)
 CFLAGS_SL = -fpic
@@ -25,10 +28,8 @@ else
 SO_FLAGS = -G
 endif
 
+# Rule for building a shared library from a single .o file
 %.so: %.o
-	$(CC) $(SO_FLAGS) -o $@ $<
+	$(CC) $(CFLAGS) $(LDFLAGS) $(LDFLAGS_SL) $(SO_FLAGS) -o $@ $<
 
 sqlmansect = 5sql
-
-# Unixware needs threads for everything that uses libpq
-CFLAGS += $(PTHREAD_CFLAGS)

src/makefiles/Makefile.win32

@@ -1,4 +1,4 @@
-# $PostgreSQL: pgsql/src/makefiles/Makefile.win32,v 1.15 2010/01/20 09:30:07 heikki Exp $
+# $PostgreSQL: pgsql/src/makefiles/Makefile.win32,v 1.16 2010/07/05 18:54:38 tgl Exp $
 
 # Use replacement include files for those missing on Win32
 override CPPFLAGS+="-I$(top_srcdir)/src/include/port/win32"
@@ -13,11 +13,6 @@ AROPT = crs
 DLSUFFIX = .dll
 CFLAGS_SL =
 
-%.dll: %.o
-	$(DLLTOOL) --export-all --output-def $*.def $<
-	$(DLLWRAP) -o $@ --def $*.def $< $(SHLIB_LINK)
-	rm -f $*.def
-
 ifneq (,$(findstring backend,$(subdir)))
 ifeq (,$(findstring conversion_procs,$(subdir)))
 ifeq (,$(findstring snowball,$(subdir)))
@@ -70,3 +65,9 @@ win32ver.rc: $(top_srcdir)/src/port/win32ver.rc
 
 win32ver.o: win32ver.rc
 	$(WINDRES) -i $< -o $@ --include-dir=$(top_builddir)/src/include --include-dir=$(srcdir)
+
+# Rule for building a shared library from a single .o file
+%.dll: %.o
+	$(DLLTOOL) --export-all --output-def $*.def $<
+	$(DLLWRAP) -o $@ --def $*.def $< $(SHLIB_LINK)
+	rm -f $*.def

src/makefiles/pgxs.mk

@@ -1,6 +1,6 @@
 # PGXS: PostgreSQL extensions makefile
 
-# $PostgreSQL: pgsql/src/makefiles/pgxs.mk,v 1.19 2010/01/05 03:56:52 tgl Exp $ 
+# $PostgreSQL: pgsql/src/makefiles/pgxs.mk,v 1.20 2010/07/05 18:54:38 tgl Exp $ 
 
 # This file contains generic rules to build many kinds of simple
 # extension modules.  You only need to set a few variables and include
@@ -68,7 +68,6 @@ override CPPFLAGS := -I. -I$(srcdir) $(CPPFLAGS)
 
 ifdef MODULES
 override CFLAGS += $(CFLAGS_SL)
-SHLIB_LINK += $(BE_DLLLIBS)
 endif
 
 ifdef MODULEDIR
@@ -287,5 +286,5 @@ endif
 
 ifdef PROGRAM
 $(PROGRAM): $(OBJS)
-	$(CC) $(CFLAGS) $(OBJS) $(PG_LIBS) $(LDFLAGS) $(LIBS) -o $@
+	$(CC) $(CFLAGS) $(OBJS) $(PG_LIBS) $(LIBS) $(LDFLAGS) $(LDFLAGS_EX) -o $@
 endif