# DP: On linux targets pass --as-needed by default to the linker.

Index: b/src/gcc/config/aarch64/aarch64-linux.h
===================================================================
--- a/src/gcc/config/aarch64/aarch64-linux.h
+++ b/src/gcc/config/aarch64/aarch64-linux.h
@@ -33,6 +33,7 @@
 
 #define LINUX_TARGET_LINK_SPEC  "%{h*}		\
    --hash-style=gnu				\
+   --as-needed					\
    %{static:-Bstatic}				\
    %{shared:-shared}				\
    %{symbolic:-Bsymbolic}			\
Index: b/src/gcc/config/ia64/linux.h
===================================================================
--- a/src/gcc/config/ia64/linux.h
+++ b/src/gcc/config/ia64/linux.h
@@ -58,7 +58,7 @@ do {						\
 #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-ia64.so.2"
 
 #undef LINK_SPEC
-#define LINK_SPEC " --hash-style=gnu \
+#define LINK_SPEC " --hash-style=gnu --as-needed \
   %{shared:-shared} \
   %{!shared: \
     %{!static: \
Index: b/src/gcc/config/sparc/linux.h
===================================================================
--- a/src/gcc/config/sparc/linux.h
+++ b/src/gcc/config/sparc/linux.h
@@ -86,7 +86,7 @@ extern const char *host_detect_local_cpu
 #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
 
 #undef  LINK_SPEC
-#define LINK_SPEC "-m elf32_sparc --hash-style=gnu %{shared:-shared} \
+#define LINK_SPEC "-m elf32_sparc --hash-style=gnu --as-needed %{shared:-shared} \
   %{!mno-relax:%{!r:-relax}} \
   %{!shared: \
     %{!static: \
Index: b/src/gcc/config/s390/linux.h
===================================================================
--- a/src/gcc/config/s390/linux.h
+++ b/src/gcc/config/s390/linux.h
@@ -65,7 +65,7 @@ along with GCC; see the file COPYING3.
 
 #undef  LINK_SPEC
 #define LINK_SPEC \
-  "%{m31:-m elf_s390}%{m64:-m elf64_s390} --hash-style=gnu \
+  "%{m31:-m elf_s390}%{m64:-m elf64_s390} --hash-style=gnu --as-needed \
    %{shared:-shared} \
    %{!shared: \
       %{static:-static} \
Index: b/src/gcc/config/rs6000/linux64.h
===================================================================
--- a/src/gcc/config/rs6000/linux64.h
+++ b/src/gcc/config/rs6000/linux64.h
@@ -396,11 +396,11 @@ extern int dot_symbols;
 					   " -m elf64ppc")
 #endif
 
-#define LINK_OS_LINUX_SPEC32 LINK_OS_LINUX_EMUL32 " --hash-style=gnu %{!shared: %{!static: \
+#define LINK_OS_LINUX_SPEC32 LINK_OS_LINUX_EMUL32 " --hash-style=gnu --as-needed %{!shared: %{!static: \
   %{rdynamic:-export-dynamic} \
   -dynamic-linker " GNU_USER_DYNAMIC_LINKER32 "}}"
 
-#define LINK_OS_LINUX_SPEC64 LINK_OS_LINUX_EMUL64 " --hash-style=gnu %{!shared: %{!static: \
+#define LINK_OS_LINUX_SPEC64 LINK_OS_LINUX_EMUL64 " --hash-style=gnu --as-needed %{!shared: %{!static: \
   %{rdynamic:-export-dynamic} \
   -dynamic-linker " GNU_USER_DYNAMIC_LINKER64 "}}"
 
Index: b/src/gcc/config/rs6000/sysv4.h
===================================================================
--- a/src/gcc/config/rs6000/sysv4.h
+++ b/src/gcc/config/rs6000/sysv4.h
@@ -774,7 +774,7 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEF
 #define GNU_USER_DYNAMIC_LINKER \
   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
 
-#define LINK_OS_LINUX_SPEC "-m elf32ppclinux --hash-style=gnu %{!shared: %{!static: \
+#define LINK_OS_LINUX_SPEC "-m elf32ppclinux --hash-style=gnu --as-needed %{!shared: %{!static: \
   %{rdynamic:-export-dynamic} \
   -dynamic-linker " GNU_USER_DYNAMIC_LINKER "}}"
 
Index: b/src/gcc/config/i386/gnu-user64.h
===================================================================
--- a/src/gcc/config/i386/gnu-user64.h
+++ b/src/gcc/config/i386/gnu-user64.h
@@ -57,6 +57,7 @@ see the files COPYING3 and COPYING.RUNTI
                    %{" SPEC_32 ":-m " GNU_USER_LINK_EMULATION32 "} \
                    %{" SPEC_X32 ":-m " GNU_USER_LINK_EMULATIONX32 "} \
   --hash-style=gnu \
+  --as-needed \
   %{shared:-shared} \
   %{!shared: \
     %{!static: \
Index: b/src/gcc/config/i386/gnu-user.h
===================================================================
--- a/src/gcc/config/i386/gnu-user.h
+++ b/src/gcc/config/i386/gnu-user.h
@@ -74,7 +74,7 @@ along with GCC; see the file COPYING3.
   { "link_emulation", GNU_USER_LINK_EMULATION },\
   { "dynamic_linker", GNU_USER_DYNAMIC_LINKER }
 
-#define GNU_USER_TARGET_LINK_SPEC "-m %(link_emulation) --hash-style=gnu %{shared:-shared} \
+#define GNU_USER_TARGET_LINK_SPEC "-m %(link_emulation) --hash-style=gnu --as-needed %{shared:-shared} \
   %{!shared: \
     %{!static: \
       %{rdynamic:-export-dynamic} \
Index: b/src/gcc/config/alpha/linux-elf.h
===================================================================
--- a/src/gcc/config/alpha/linux-elf.h
+++ b/src/gcc/config/alpha/linux-elf.h
@@ -37,7 +37,7 @@ along with GCC; see the file COPYING3.
 
 #define ELF_DYNAMIC_LINKER	GNU_USER_DYNAMIC_LINKER
 
-#define LINK_SPEC "-m elf64alpha --hash-style=gnu %{G*} %{relax:-relax}	\
+#define LINK_SPEC "-m elf64alpha --hash-style=gnu --as-needed %{G*} %{relax:-relax}	\
   %{O*:-O3} %{!O*:-O1}						\
   %{shared:-shared}						\
   %{!shared:							\
Index: b/src/gcc/config/arm/linux-elf.h
===================================================================
--- a/src/gcc/config/arm/linux-elf.h
+++ b/src/gcc/config/arm/linux-elf.h
@@ -73,6 +73,7 @@
      -dynamic-linker " GNU_USER_DYNAMIC_LINKER "} \
    -X \
    --hash-style=gnu \
+   --as-needed \
    %{mbig-endian:-EB} %{mlittle-endian:-EL}" \
    SUBTARGET_EXTRA_LINK_SPEC
 
Index: b/src/gcc/config/mips/gnu-user.h
===================================================================
--- a/src/gcc/config/mips/gnu-user.h
+++ b/src/gcc/config/mips/gnu-user.h
@@ -55,6 +55,7 @@ along with GCC; see the file COPYING3.
 #undef GNU_USER_TARGET_LINK_SPEC
 #define GNU_USER_TARGET_LINK_SPEC "\
   %{G*} %{EB} %{EL} %{mips*} %{shared} \
+ -as-needed \
   %{!shared: \
     %{!static: \
       %{rdynamic:-export-dynamic} \
Index: b/src/libjava/Makefile.am
===================================================================
--- a/src/libjava/Makefile.am
+++ b/src/libjava/Makefile.am
@@ -628,7 +628,7 @@ libgcj_bc.la: $(libgcj_bc_la_OBJECTS) $(
 	rm .libs/libgcj_bc.so; \
 	mv .libs/libgcj_bc.so.1.0.0 .libs/libgcj_bc.so; \
 	$(libgcj_bc_dummy_LINK) -xc /dev/null -Wl,-soname,libgcj_bc.so.1 \
-	-o .libs/libgcj_bc.so.1.0.0 -lgcj || exit; \
+	-o .libs/libgcj_bc.so.1.0.0 -Wl,--no-as-needed -lgcj || exit; \
 	rm .libs/libgcj_bc.so.1; \
 	$(LN_S) libgcj_bc.so.1.0.0 .libs/libgcj_bc.so.1
 
Index: b/src/libjava/Makefile.in
===================================================================
--- a/src/libjava/Makefile.in
+++ b/src/libjava/Makefile.in
@@ -10600,7 +10600,7 @@ libgcj_bc.la: $(libgcj_bc_la_OBJECTS) $(
 	rm .libs/libgcj_bc.so; \
 	mv .libs/libgcj_bc.so.1.0.0 .libs/libgcj_bc.so; \
 	$(libgcj_bc_dummy_LINK) -xc /dev/null -Wl,-soname,libgcj_bc.so.1 \
-	-o .libs/libgcj_bc.so.1.0.0 -lgcj || exit; \
+	-o .libs/libgcj_bc.so.1.0.0 -Wl,--no-as-needed -lgcj || exit; \
 	rm .libs/libgcj_bc.so.1; \
 	$(LN_S) libgcj_bc.so.1.0.0 .libs/libgcj_bc.so.1