[gcc r14-9856] Move GNU/Hurd startfile spec from config/i386/gnu.h to config/gnu.h

[gcc r14-9856] Move GNU/Hurd startfile spec from config/i386/gnu.h to config/gnu.h

[Thomas Schwinge]

https://gcc.gnu.org/g:532c57f8c3a15b109a46d3e2b14d60a5c40979d5

commit r14-9856-g532c57f8c3a15b109a46d3e2b14d60a5c40979d5
Author: Sergey Bugaev <bugaevc@gmail.com>
Date:   Sat Mar 23 17:35:11 2024 +0300

    Move GNU/Hurd startfile spec from config/i386/gnu.h to config/gnu.h
    
    Since it's not i386-specific; this makes it possible to reuse it for other
    architectures.
    
    Also, add a warning for the case gnu.h is specified before gnu-user.h, which
    would cause gnu-user's version of the spec to override gnu's, and not the other
    way around as it's intended. The i?86-gnu target currently specifies them in
    the right order, but it's easy to accidentally put them in a wrong order.
    
    gcc/Changelog:
    
            * config/i386/gnu.h: Move GNU/Hurd STARTFILE_SPEC from here...
            * config/gnu.h: ...to here.
    
    Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>

Diff:
---
 gcc/config/gnu.h      | 16 ++++++++++++++++
 gcc/config/i386/gnu.h | 11 -----------
 2 files changed, 16 insertions(+), 11 deletions(-)

diff --git a/gcc/config/gnu.h b/gcc/config/gnu.h
index ac99f760547..e2a33baf040 100644
--- a/gcc/config/gnu.h
+++ b/gcc/config/gnu.h
@@ -31,3 +31,19 @@ along with GCC.  If not, see <http://www.gnu.org/licenses/>.
 	builtin_assert ("system=unix");		\
 	builtin_assert ("system=posix");	\
     } while (0)
+
+
+#ifndef GNU_USER_TARGET_STARTFILE_SPEC
+# warning This file should be included after gnu-user.h, to override its STARTFILE_SPEC
+#endif
+
+#undef	STARTFILE_SPEC
+#if defined HAVE_LD_PIE
+#define STARTFILE_SPEC \
+  "%{!shared: %{pg|p|profile:%{static-pie:grcrt0.o%s;static:gcrt0.o%s;:gcrt1.o%s};static-pie:rcrt0.o%s;static:crt0.o%s;" PIE_SPEC ":Scrt1.o%s;:crt1.o%s}} \
+   crti.o%s %{static:crtbeginT.o%s;shared|static-pie|" PIE_SPEC ":crtbeginS.o%s;:crtbegin.o%s}"
+#else
+#define STARTFILE_SPEC \
+  "%{!shared: %{pg|p|profile:%{static:gcrt0.o%s;:gcrt1.o%s};static:crt0.o%s;:crt1.o%s}} \
+   crti.o%s %{static:crtbeginT.o%s;shared:crtbeginS.o%s;:crtbegin.o%s}"
+#endif
diff --git a/gcc/config/i386/gnu.h b/gcc/config/i386/gnu.h
index 3f42714d16c..af1d55887ed 100644
--- a/gcc/config/i386/gnu.h
+++ b/gcc/config/i386/gnu.h
@@ -24,17 +24,6 @@ along with GCC.  If not, see <http://www.gnu.org/licenses/>.
 #undef GNU_USER_DYNAMIC_LINKER
 #define GNU_USER_DYNAMIC_LINKER "/lib/ld.so"
 
-#undef	STARTFILE_SPEC
-#if defined HAVE_LD_PIE
-#define STARTFILE_SPEC \
-  "%{!shared: %{pg|p|profile:%{static-pie:grcrt0.o%s;static:gcrt0.o%s;:gcrt1.o%s};static-pie:rcrt0.o%s;static:crt0.o%s;" PIE_SPEC ":Scrt1.o%s;:crt1.o%s}} \
-   crti.o%s %{static:crtbeginT.o%s;shared|static-pie|" PIE_SPEC ":crtbeginS.o%s;:crtbegin.o%s}"
-#else
-#define STARTFILE_SPEC \
-  "%{!shared: %{pg|p|profile:%{static:gcrt0.o%s;:gcrt1.o%s};static:crt0.o%s;:crt1.o%s}} \
-   crti.o%s %{static:crtbeginT.o%s;shared:crtbeginS.o%s;:crtbegin.o%s}"
-#endif
-
 #ifdef TARGET_LIBC_PROVIDES_SSP
 
 /* i386 glibc provides __stack_chk_guard in %gs:0x14.  */