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If compiler is PIE-default (which is indicated by the existing
pic_default test, since setting -fPIE sets __PIC__), use the shared
versions of crtbegin, crtend and crt1 objects.
Kevin F. Quinn <kevquinn@gentoo.org> 15 Dec 2006
--- Makeconfig.orig 2006-12-19 21:40:06.000000000 +0100
+++ Makeconfig 2006-12-19 21:40:20.000000000 +0100
@@ -415,6 +415,19 @@
# Command for linking programs with the C library.
ifndef +link
+ifeq (yes,$(build-pic-default))
+# PIE version
++link = $(CC) -nostdlib -nostartfiles -pie -o $@ \
+ $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
+ $(combreloc-LDFLAGS) $(relro-LDFLAGS) \
+ $(addprefix $(csu-objpfx),$(+starts)) \
+ $(+preinit) $(+prectors) \
+ $(filter-out $(addprefix $(csu-objpfx),start.o \
+ $(+starts))\
+ $(+preinit) $(link-extra-libs) \
+ $(common-objpfx)libc% $(+postinit),$^) \
+ $(link-extra-libs) $(link-libc) $(+postctors) $(+postinit)
+else
+link = $(CC) -nostdlib -nostartfiles -o $@ \
$(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
$(combreloc-LDFLAGS) $(relro-LDFLAGS) \
@@ -426,8 +439,20 @@
$(common-objpfx)libc% $(+postinit),$^) \
$(link-extra-libs) $(link-libc) $(+postctor) $(+postinit)
endif
+endif
# Command for statically linking programs with the C library.
ifndef +link-static
+ifeq (yes,$(build-pic-default))
++link-static = $(CC) -nostdlib -nostartfiles -static -o $@ \
+ $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) $(app-LDFLAGS) \
+ $(addprefix $(csu-objpfx),$(+static-starts)) \
+ $(+preinit) $(+prectors) \
+ $(filter-out $(addprefix $(csu-objpfx),start.o \
+ $(+starts))\
+ $(+preinit) $(link-extra-libs-static) \
+ $(common-objpfx)libc% $(+postinit),$^) \
+ $(link-extra-libs-static) $(link-libc-static) $(+postctors) $(+postinit)
+else
+link-static = $(CC) -nostdlib -nostartfiles -static -o $@ \
$(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
$(addprefix $(csu-objpfx),$(static-start-installed-name)) \
@@ -438,6 +463,7 @@
$(common-objpfx)libc% $(+postinit),$^) \
$(link-extra-libs-static) $(link-libc-static) $(+postctor) $(+postinit)
endif
+endif
# Command for statically linking bounded-pointer programs with the C library.
ifndef +link-bounded
+link-bounded = $(CC) -nostdlib -nostartfiles -static -fbounded-pointers -o $@ \
@@ -530,6 +556,12 @@
+postinit = $(addprefix $(csu-objpfx),crtn.o)
+prector = `$(CC) --print-file-name=crtbegin.o`
+postctor = `$(CC) --print-file-name=crtend.o`
+# PIE versions
++prectors = `$(CC) --print-file-name=crtbeginS.o`
++postctors = `$(CC) --print-file-name=crtendS.o`
++starts = S$(start-installed-name)
++static-starts = S$(static-start-installed-name)
+#
+interp = $(addprefix $(elf-objpfx),interp.os)
endif
csu-objpfx = $(common-objpfx)csu/
--- configure.in.orig 2006-12-19 22:53:25.000000000 +0100
+++ configure.in 2006-12-19 22:53:41.000000000 +0100
@@ -2145,7 +2145,7 @@
# error PIC is default.
#endif
EOF
-if eval "${CC-cc} -S conftest.c 2>&AS_MESSAGE_LOG_FD 1>&AS_MESSAGE_LOG_FD"; then
+if eval "${CC-cc} -fno-PIE -S conftest.c 2>&AS_MESSAGE_LOG_FD 1>&AS_MESSAGE_LOG_FD"; then
pic_default=no
fi
rm -f conftest.*])
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