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$NetBSD: patch-gcc_config_netbsd-elf.h,v 1.2 2018/11/10 11:45:27 mrg Exp $
Link PIE executables with crtbeginS/crtendS on NetBSD.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87221
Add NETBSD_SUBTARGET_EXTRA_SPECS and NETBSD_LINK_LD_ELF_SO_SPEC.
--- gcc/config/netbsd-elf.h.orig 2018-01-03 10:03:58.000000000 +0000
+++ gcc/config/netbsd-elf.h 2018-11-10 06:47:49.835868835 +0000
@@ -40,8 +40,11 @@
%{!p:crt0%O%s}}} \
%:if-exists(crti%O%s) \
%{static:%:if-exists-else(crtbeginT%O%s crtbegin%O%s)} \
- %{!static: \
- %{!shared:crtbegin%O%s} %{shared:crtbeginS%O%s}}"
+ %{!static: \
+ %{!shared: \
+ %{!pie:crtbegin%O%s} \
+ %{pie:crtbeginS%O%s}} \
+ %{shared:crtbeginS%O%s}}"
#undef STARTFILE_SPEC
#define STARTFILE_SPEC NETBSD_STARTFILE_SPEC
@@ -52,7 +55,10 @@
C++ file-scope static objects deconstructed after exiting "main". */
#define NETBSD_ENDFILE_SPEC \
- "%{!shared:crtend%O%s} %{shared:crtendS%O%s} \
+ "%{!shared: \
+ %{!pie:crtend%O%s} \
+ %{pie:crtendS%O%s}} \
+ %{shared:crtendS%O%s} \
%:if-exists(crtn%O%s)"
#undef ENDFILE_SPEC
@@ -67,6 +73,9 @@
Target-specific code must provide the %(netbsd_entry_point) spec. */
+#define NETBSD_LINK_LD_ELF_SO_SPEC \
+ "%{!dynamic-linker:-dynamic-linker /usr/libexec/ld.elf_so}"
+
#define NETBSD_LINK_SPEC_ELF \
"%{assert*} %{R*} %{rpath*} \
%{shared:-shared} \
@@ -81,6 +90,17 @@
-dynamic-linker /usr/libexec/ld.elf_so} \
%{static:-static}}"
+/* Provide the standard list of subtarget extra specs for NetBSD targets. */
+#define NETBSD_SUBTARGET_EXTRA_SPECS \
+ { "netbsd_link_ld_elf_so", NETBSD_LINK_LD_ELF_SO_SPEC }, \
+ { "netbsd_cpp_spec", NETBSD_CPP_SPEC }, \
+ { "netbsd_link_spec", NETBSD_LINK_SPEC_ELF }, \
+ { "netbsd_entry_point", NETBSD_ENTRY_POINT }, \
+ { "netbsd_endfile_spec", NETBSD_ENDFILE_SPEC },
+
+#undef SUBTARGET_EXTRA_SPECS
+#define SUBTARGET_EXTRA_SPECS NETBSD_SUBTARGET_EXTRA_SPECS
+
/* Use --as-needed -lgcc_s for eh support. */
#ifdef HAVE_LD_AS_NEEDED
#define USE_LD_AS_NEEDED 1
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