gcc-6-source 6.4.0-17ubuntu1 / usr / src / gcc-6 / debian / patches / gcc-as-needed.diff

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/usr/src/gcc-6/debian/patches/gcc-as-needed.diff is in gcc-6-source 6.4.0-17ubuntu1.

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# DP: On linux targets pass --as-needed by default to the linker, but always
# DP: link the sanitizer libraries with --no-as-needed.

Index: b/src/gcc/gcc.c
===================================================================
--- a/src/gcc/gcc.c
+++ b/src/gcc/gcc.c
@@ -681,8 +681,11 @@ proper position among the other output f
 #ifdef LIBASAN_EARLY_SPEC
 #define LIBASAN_SPEC STATIC_LIBASAN_LIBS
 #elif defined(HAVE_LD_STATIC_DYNAMIC)
-#define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \
-		     "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \
+#define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION "}" \
+		     " %{!static-libasan:%{!fuse-ld=gold:--push-state }--no-as-needed}" \
+		     " -lasan " \
+		     " %{static-libasan:" LD_DYNAMIC_OPTION "}" \
+		     " %{!static-libasan:%{fuse-ld=gold:--as-needed;:--pop-state}}" \
 		     STATIC_LIBASAN_LIBS
 #else
 #define LIBASAN_SPEC "-lasan" STATIC_LIBASAN_LIBS
@@ -699,8 +702,11 @@ proper position among the other output f
 #ifdef LIBTSAN_EARLY_SPEC
 #define LIBTSAN_SPEC STATIC_LIBTSAN_LIBS
 #elif defined(HAVE_LD_STATIC_DYNAMIC)
-#define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \
-		     "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \
+#define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION "}" \
+		     " %{!static-libtsan:%{!fuse-ld=gold:--push-state }--no-as-needed}" \
+		     " -ltsan " \
+		     " %{static-libtsan:" LD_DYNAMIC_OPTION "}" \
+		     " %{!static-libtsan:%{fuse-ld=gold:--as-needed;:--pop-state}}" \
 		     STATIC_LIBTSAN_LIBS
 #else
 #define LIBTSAN_SPEC "-ltsan" STATIC_LIBTSAN_LIBS
@@ -717,8 +723,11 @@ proper position among the other output f
 #ifdef LIBLSAN_EARLY_SPEC
 #define LIBLSAN_SPEC STATIC_LIBLSAN_LIBS
 #elif defined(HAVE_LD_STATIC_DYNAMIC)
-#define LIBLSAN_SPEC "%{static-liblsan:" LD_STATIC_OPTION \
-		     "} -llsan %{static-liblsan:" LD_DYNAMIC_OPTION "}" \
+#define LIBLSAN_SPEC "%{static-liblsan:" LD_STATIC_OPTION "}" \
+		     " %{!static-liblsan:%{!fuse-ld=gold:--push-state }--no-as-needed}" \
+		     " -llsan " \
+		     " %{static-liblsan:" LD_DYNAMIC_OPTION "}" \
+		     " %{!static-liblsan:%{fuse-ld=gold:--as-needed;:--pop-state}}" \
 		     STATIC_LIBLSAN_LIBS
 #else
 #define LIBLSAN_SPEC "-llsan" STATIC_LIBLSAN_LIBS
@@ -733,8 +742,11 @@ proper position among the other output f
 #define STATIC_LIBUBSAN_LIBS \
   " %{static-libubsan:%:include(libsanitizer.spec)%(link_libubsan)}"
 #ifdef HAVE_LD_STATIC_DYNAMIC
-#define LIBUBSAN_SPEC "%{static-libubsan:" LD_STATIC_OPTION \
-		     "} -lubsan %{static-libubsan:" LD_DYNAMIC_OPTION "}" \
+#define LIBUBSAN_SPEC "%{static-libubsan:" LD_STATIC_OPTION "}" \
+		     " %{!static-libubsan:%{!fuse-ld=gold:--push-state }--no-as-needed}" \
+		     " -lubsan " \
+		     " %{static-libubsan:" LD_DYNAMIC_OPTION "}" \
+		     " %{!static-libubsan:%{fuse-ld=gold:--as-needed;:--pop-state}}" \
 		     STATIC_LIBUBSAN_LIBS
 #else
 #define LIBUBSAN_SPEC "-lubsan" STATIC_LIBUBSAN_LIBS
Index: b/src/gcc/config/gnu-user.h
===================================================================
--- a/src/gcc/config/gnu-user.h
+++ b/src/gcc/config/gnu-user.h
@@ -159,13 +159,13 @@ see the files COPYING3 and COPYING.RUNTI
 #define LIBASAN_EARLY_SPEC "%{!shared:libasan_preinit%O%s} " \
   "%{static-libasan:%{!shared:" \
   LD_STATIC_OPTION " --whole-archive -lasan --no-whole-archive " \
-  LD_DYNAMIC_OPTION "}}%{!static-libasan:-lasan}"
+  LD_DYNAMIC_OPTION "}}%{!static-libasan:%{!fuse-ld=gold:--push-state} --no-as-needed -lasan %{fuse-ld=gold:--as-needed;:--pop-state}}"
 #undef LIBTSAN_EARLY_SPEC
 #define LIBTSAN_EARLY_SPEC "%{static-libtsan:%{!shared:" \
   LD_STATIC_OPTION " --whole-archive -ltsan --no-whole-archive " \
-  LD_DYNAMIC_OPTION "}}%{!static-libtsan:-ltsan}"
+  LD_DYNAMIC_OPTION "}}%{!static-libtsan:%{!fuse-ld=gold:--push-state} --no-as-needed -ltsan %{fuse-ld=gold:--as-needed;:--pop-state}}"
 #undef LIBLSAN_EARLY_SPEC
 #define LIBLSAN_EARLY_SPEC "%{static-liblsan:%{!shared:" \
   LD_STATIC_OPTION " --whole-archive -llsan --no-whole-archive " \
-  LD_DYNAMIC_OPTION "}}%{!static-liblsan:-llsan}"
+  LD_DYNAMIC_OPTION "}}%{!static-liblsan:%{!fuse-ld=gold:--push-state} --no-as-needed -llsan %{fuse-ld=gold:--as-needed;:--pop-state}}"
 #endif
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
@@ -36,6 +36,7 @@
 
 #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
@@ -480,12 +480,12 @@ 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 "}} \
   %(link_os_extra_spec32)"
 
-#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 "}} \
   %(link_os_extra_spec64)"
Index: b/src/gcc/config/rs6000/sysv4.h
===================================================================
--- a/src/gcc/config/rs6000/sysv4.h
+++ b/src/gcc/config/rs6000/sysv4.h
@@ -805,7 +805,7 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEF
   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
 			 MUSL_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 @@
      %{!shared:-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} \

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