PR driver/81523: Make -static override -piehjl/pr81523/master

-static and -pie together behave differently depending on whether GCC is
configured with --enable-default-pie.  On x86, "-static -pie" fails to
create executable when --enable-default-pie isn't used, but creates a
static executable when --enable-default-pie is used.  This patch makes
-static completely override -pie to create a static executable, regardless
if --enable-default-pie is used to configure GCC.

2017-07-24  Alan Modra  <amodra@gmail.com>
	    H.J. Lu  <hongjiu.lu@intel.com>

gcc/

	PR driver/81523
	* gcc.c (NO_PIE_SPEC): Delete.
	(PIE_SPEC): Define as !no-pie/pie.  Move static|shared|r
	exclusion..
	(LINK_PIE_SPEC): ..to here.
	(LINK_COMMAND_SPEC): Support -no-pie.
	* config/gnu-user.h (GNU_USER_TARGET_STARTFILE_SPEC): Correct
	chain of crtbegin*.o selection, update for PIE_SPEC changes and
	format.
	(GNU_USER_TARGET_ENDFILE_SPEC): Similarly.
	* config/sol2.h (STARTFILE_CRTBEGIN_SPEC): Similarly.
	(ENDFILE_CRTEND_SPEC): Similarly.

gcc/testsuite/

	PR driver/81523
	* gcc.dg/pie-7.c: New test.
	* gcc.dg/pie-static-1.c: Likewise.
	* gcc.dg/pie-static-2.c: Likewise.

6 files changed, 58 insertions, 23 deletions

diff --git a/gcc/config/gnu-user.h b/gcc/config/gnu-user.h
index 2787a3d16be..de605b0c466 100644
--- a/gcc/config/gnu-user.h
+++ b/gcc/config/gnu-user.h
@@ -50,19 +50,28 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 
 #if defined HAVE_LD_PIE
 #define GNU_USER_TARGET_STARTFILE_SPEC \
-  "%{!shared: %{pg|p|profile:gcrt1.o%s;: \
-    %{" PIE_SPEC ":Scrt1.o%s} %{" NO_PIE_SPEC ":crt1.o%s}}} \
-   crti.o%s %{static:crtbeginT.o%s;: %{shared:crtbeginS.o%s} \
-	      %{" PIE_SPEC ":crtbeginS.o%s} \
-	      %{" NO_PIE_SPEC ":crtbegin.o%s}} \
+  "%{shared:; \
+     pg|p|profile:gcrt1.o%s; \
+     static:crt1.o%s; \
+     " PIE_SPEC ":Scrt1.o%s; \
+     :crt1.o%s} \
+   crti.o%s \
+   %{static:crtbeginT.o%s; \
+     shared|" PIE_SPEC ":crtbeginS.o%s; \
+     :crtbegin.o%s} \
    %{fvtable-verify=none:%s; \
      fvtable-verify=preinit:vtv_start_preinit.o%s; \
      fvtable-verify=std:vtv_start.o%s} \
    " CRTOFFLOADBEGIN
 #else
 #define GNU_USER_TARGET_STARTFILE_SPEC \
-  "%{!shared: %{pg|p|profile:gcrt1.o%s;:crt1.o%s}} \
-   crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s} \
+  "%{shared:; \
+     pg|p|profile:gcrt1.o%s; \
+     :crt1.o%s} \
+   crti.o%s \
+   %{static:crtbeginT.o%s; \
+     shared|pie:crtbeginS.o%s; \
+     :crtbegin.o%s} \
    %{fvtable-verify=none:%s; \
      fvtable-verify=preinit:vtv_start_preinit.o%s; \
      fvtable-verify=std:vtv_start.o%s} \
@@ -82,15 +91,20 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
   "%{fvtable-verify=none:%s; \
      fvtable-verify=preinit:vtv_end_preinit.o%s; \
      fvtable-verify=std:vtv_end.o%s} \
-   %{shared:crtendS.o%s;: %{" PIE_SPEC ":crtendS.o%s} \
-   %{" NO_PIE_SPEC ":crtend.o%s}} crtn.o%s \
+   %{static:crtend.o%s; \
+     shared|" PIE_SPEC ":crtendS.o%s; \
+     :crtend.o%s} \
+   crtn.o%s \
    " CRTOFFLOADEND
 #else
 #define GNU_USER_TARGET_ENDFILE_SPEC \
   "%{fvtable-verify=none:%s; \
      fvtable-verify=preinit:vtv_end_preinit.o%s; \
      fvtable-verify=std:vtv_end.o%s} \
-   %{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s \
+   %{static:crtend.o%s; \
+     shared|pie:crtendS.o%s; \
+     :crtend.o%s} \
+   crtn.o%s \
    " CRTOFFLOADEND
 #endif
 #undef  ENDFILE_SPEC
diff --git a/gcc/config/sol2.h b/gcc/config/sol2.h
index b8398d082a9..bf5203b8c16 100644
--- a/gcc/config/sol2.h
+++ b/gcc/config/sol2.h
@@ -174,9 +174,9 @@ along with GCC; see the file COPYING3.  If not see
 			    %{!ansi:values-Xa.o%s}"
 
 #if defined(HAVE_LD_PIE) && defined(HAVE_SOLARIS_CRTS)
-#define STARTFILE_CRTBEGIN_SPEC "%{shared:crtbeginS.o%s} \
-				 %{" PIE_SPEC ":crtbeginS.o%s} \
-				 %{" NO_PIE_SPEC ":crtbegin.o%s}"
+#define STARTFILE_CRTBEGIN_SPEC "%{static:crtbegin.o%s; \
+				   shared|" PIE_SPEC ":crtbeginS.o%s; \
+				   :crtbegin.o%s}"
 #else
 #define STARTFILE_CRTBEGIN_SPEC	"crtbegin.o%s"
 #endif
@@ -224,9 +224,9 @@ along with GCC; see the file COPYING3.  If not see
 #endif
 
 #if defined(HAVE_LD_PIE) && defined(HAVE_SOLARIS_CRTS)
-#define ENDFILE_CRTEND_SPEC "%{shared:crtendS.o%s;: \
-			       %{" PIE_SPEC ":crtendS.o%s} \
-			       %{" NO_PIE_SPEC ":crtend.o%s}}"
+#define ENDFILE_CRTEND_SPEC "%{static:crtend.o%s; \
+			       shared|" PIE_SPEC ":crtendS.o%s; \
+			       :crtend.o%s}"
 #else
 #define ENDFILE_CRTEND_SPEC "crtend.o%s"
 #endif
diff --git a/gcc/gcc.c b/gcc/gcc.c
index d8c5260e36b..987eff55aa6 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -878,8 +878,7 @@ proper position among the other output files.  */
 #endif
 
 #ifdef ENABLE_DEFAULT_PIE
-#define NO_PIE_SPEC		"no-pie|static"
-#define PIE_SPEC		NO_PIE_SPEC "|r|shared:;"
+#define PIE_SPEC		"!no-pie"
 #define NO_FPIE1_SPEC		"fno-pie"
 #define FPIE1_SPEC		NO_FPIE1_SPEC ":;"
 #define NO_FPIE2_SPEC		"fno-PIE"
@@ -900,7 +899,6 @@ proper position among the other output files.  */
 #define FPIE_OR_FPIC_SPEC	NO_FPIE_AND_FPIC_SPEC ":;"
 #else
 #define PIE_SPEC		"pie"
-#define NO_PIE_SPEC		PIE_SPEC "|r|shared:;"
 #define FPIE1_SPEC		"fpie"
 #define NO_FPIE1_SPEC		FPIE1_SPEC ":;"
 #define FPIE2_SPEC		"fPIE"
@@ -929,7 +927,7 @@ proper position among the other output files.  */
 #else
 #define LD_PIE_SPEC ""
 #endif
-#define LINK_PIE_SPEC "%{no-pie:} " "%{" PIE_SPEC ":" LD_PIE_SPEC "} "
+#define LINK_PIE_SPEC "%{static|shared|r:;" PIE_SPEC ":" LD_PIE_SPEC "} "
 #endif
 
 #ifndef LINK_BUILDID_SPEC
@@ -1017,8 +1015,10 @@ proper position among the other output files.  */
 #endif
 
 /* -u* was put back because both BSD and SysV seem to support it.  */
-/* %{static:} simply prevents an error message if the target machine
-   doesn't handle -static.  */
+/* %{static|no-pie:} simply prevents an error message:
+   1. If the target machine doesn't handle -static.
+   2. If PIE isn't enabled by default.
+ */
 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
    scripts which exist in user specified directories, or in standard
    directories.  */
@@ -1035,7 +1035,7 @@ proper position among the other output files.  */
    "%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \
    "%X %{o*} %{e*} %{N} %{n} %{r}\
     %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}} \
-    %{static:} %{L*} %(mfwrap) %(link_libgcc) " \
+    %{static|no-pie:} %{L*} %(mfwrap) %(link_libgcc) " \
     VTABLE_VERIFICATION_SPEC " " SANITIZER_EARLY_SPEC " %o " CHKP_SPEC " \
     %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\
 	%:include(libgomp.spec)%(link_gomp)}\
diff --git a/gcc/testsuite/gcc.dg/pie-7.c b/gcc/testsuite/gcc.dg/pie-7.c
new file mode 100644
index 00000000000..e118a98bafd
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pie-7.c
@@ -0,0 +1,7 @@
+/* { dg-do run { target pie } } */
+/* { dg-options "-fno-pie -no-pie" } */
+
+int main(void)
+{
+  return 0;
+}
diff --git a/gcc/testsuite/gcc.dg/pie-static-1.c b/gcc/testsuite/gcc.dg/pie-static-1.c
new file mode 100644
index 00000000000..f3580efdfe6
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pie-static-1.c
@@ -0,0 +1,7 @@
+/* { dg-do run { target pie } } */
+/* { dg-options "-static -fpie -pie" } */
+
+int main(void)
+{
+  return 0;
+}
diff --git a/gcc/testsuite/gcc.dg/pie-static-2.c b/gcc/testsuite/gcc.dg/pie-static-2.c
new file mode 100644
index 00000000000..49608c5fb2a
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pie-static-2.c
@@ -0,0 +1,7 @@
+/* { dg-do run { target pie } } */
+/* { dg-options "-fpie -pie -static" } */
+
+int main(void)
+{
+  return 0;
+}