Enhance and clear the support of linker flags

Some time ago, we had a ex_libs configuration setting that could be
divided into lflags and ex_libs.  These got divided in two settings,
lflags and ex_libs, and the former was interpreted to be general
linking flags.

Unfortunately, that conclusion wasn't entirely accurate.  Most of
those linking were meant to end up in a very precise position on the
linking command line, just before the spec of libraries the linking
depends on.

Back to the drawing board, we're diving things further, now having
lflags, which are linking flags that aren't depending on command line
position, plib_lflags, which are linking flags that should show up just
before the spec of libraries to depend on, and finally ex_libs, which
is the spec of extra libraries to depend on.

Also, documentation is changed in Configurations/README.  This was
previously forgotten.

Reviewed-by: Kurt Roeckx <kurt@openssl.org>

1 files changed, 10 insertions, 10 deletions

diff --git a/Makefile.shared b/Makefile.shared
index 70980ad..d8bd9ed 100644
--- a/Makefile.shared
+++ b/Makefile.shared
@@ -11,8 +11,8 @@ CFLAGS=$(CFLAG)
 # LDFLAGS contains flags to be used when temporary object files (when building
 # shared libraries) are created, or when an application is linked.
 # SHARED_LDFLAGS contains flags to be used when the shared library is created.
-LDFLAGS=
-SHARED_LDFLAGS=
+LDFLAGS=$(LDFLAG)
+SHARED_LDFLAGS=$(SHARED_LDFLAG)
 
 NM=nm
 
@@ -92,7 +92,7 @@ CALC_VERSIONS=	\
 LINK_APP=	\
   ( $(SET_X);   \
     LIBDEPS="$${LIBDEPS:-$(LIBDEPS)}"; \
-    LDCMD="$${LDCMD:-$(CC)}"; LDFLAGS="$${LDFLAGS:-$(CFLAGS)}"; \
+    LDCMD="$${LDCMD:-$(CC)}"; LDFLAGS="$${LDFLAGS:-$(CFLAGS) $(LDFLAGS)}"; \
     LIBPATH=`for x in $$LIBDEPS; do echo $$x; done | sed -e 's/^ *-L//;t' -e d | uniq`; \
     LIBPATH=`echo $$LIBPATH | sed -e 's/ /:/g'`; \
     LD_LIBRARY_PATH=$$LIBPATH:$$LD_LIBRARY_PATH \
@@ -153,7 +153,7 @@ DO_GNU_SO=$(CALC_VERSIONS); \
 	NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 	SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-Bsymbolic -Wl,-soname=$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"
 
-DO_GNU_APP=LDFLAGS="$(CFLAGS) -Wl,-rpath,$(LIBRPATH)"
+DO_GNU_APP=LDFLAGS="$(CFLAGS) $(LDFLAGS) -Wl,-rpath,$(LIBRPATH)"
 
 #This is rather special.  It's a special target with which one can link
 #applications without bothering with any features that have anything to
@@ -203,7 +203,7 @@ link_a.bsd:
 	fi; $(LINK_SO_A)
 link_app.bsd:
 	@if $(DETECT_GNU_LD); then $(DO_GNU_APP); else \
-	LDFLAGS="$(CFLAGS) -Wl,-rpath,$(LIBPATH)"; \
+	LDFLAGS="$(CFLAGS) $(LDFLAGS) -Wl,-rpath,$(LIBPATH)"; \
 	fi; $(LINK_APP)
 
 # For Darwin AKA Mac OS/X (dyld)
@@ -357,7 +357,7 @@ link_app.alpha-osf1:
 	@if $(DETECT_GNU_LD); then \
 		$(DO_GNU_APP); \
 	else \
-		LDFLAGS="$(CFLAGS) -rpath $(LIBRPATH)"; \
+		LDFLAGS="$(CFLAGS) $(LDFLAGS) -rpath $(LIBRPATH)"; \
 	fi; \
 	$(LINK_APP)
 
@@ -398,7 +398,7 @@ link_app.solaris:
 	@ if $(DETECT_GNU_LD); then \
 		$(DO_GNU_APP); \
 	else \
-		LDFLAGS="$(CFLAGS) -R $(LIBRPATH)"; \
+		LDFLAGS="$(CFLAGS) $(LDFLAGS) -R $(LIBRPATH)"; \
 	fi; \
 	$(LINK_APP)
 
@@ -493,7 +493,7 @@ link_a.irix:
 	fi; \
 	$(LINK_SO_A)
 link_app.irix:
-	@LDFLAGS="$(CFLAGS) -Wl,-rpath,$(LIBRPATH)"; \
+	@LDFLAGS="$(CFLAGS) $(LDFLAGS) -Wl,-rpath,$(LIBRPATH)"; \
 	$(LINK_APP)
 
 # 32-bit PA-RISC HP-UX embeds the -L pathname of libs we link with, so
@@ -532,7 +532,7 @@ link_a.hpux:
 	$(LINK_SO_A) && chmod a=rx $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX
 link_app.hpux:
 	@if $(DETECT_GNU_LD); then $(DO_GNU_APP); else \
-	LDFLAGS="$(CFLAGS) -Wl,+s,+cdp,../:,+cdp,./:,+b,$(LIBRPATH)"; \
+	LDFLAGS="$(CFLAGS) $(LDFLAGS) -Wl,+s,+cdp,../:,+cdp,./:,+b,$(LIBRPATH)"; \
 	fi; \
 	$(LINK_APP)
 
@@ -557,7 +557,7 @@ link_a.aix:
 	SHAREDFLAGS='$(CFLAGS) $(SHARED_LDFLAGS) -Wl,-bexpall,-bnolibpath,-bM:SRE'; \
 	$(LINK_SO_A_VIA_O)
 link_app.aix:
-	LDFLAGS="$(CFLAGS) -Wl,-brtl,-blibpath:$(LIBRPATH):$${LIBPATH:-/usr/lib:/lib}"; \
+	LDFLAGS="$(CFLAGS) $(LDFLAGS) -Wl,-brtl,-blibpath:$(LIBRPATH):$${LIBPATH:-/usr/lib:/lib}"; \
 	$(LINK_APP)