From cc08749b2d1c68284b25b157fbbe1ff219495cae Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Thu, 25 Jun 2015 02:37:04 -0700 Subject: Support compilers defaulting to PIE To support building glibc with GCC 6 configured with --enable-default-pie, which generates PIE by default, we need to build programs as PIE. But elf/tst-dlopen-aout must not be built as PIE since it tests dlopen on ET_EXEC file and PIE is ET_DYN. [BZ #17841] * Makeconfig (no-pie-ldflag): New. (+link): Set to $(+link-pie) if default to PIE. (+link-tests): Set to $(+link-pie-tests) if default to PIE. * config.make.in (build-pie-default): New. * configure.ac (libc_cv_pie_default): New. Set to yes if -fPIE is default. AC_SUBST. * configure: Regenerated. * elf/Makefile (LDFLAGS-tst-dlopen-aout): New. --- Makeconfig | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'Makeconfig') diff --git a/Makeconfig b/Makeconfig index 0f4b549..7b46323 100644 --- a/Makeconfig +++ b/Makeconfig @@ -442,6 +442,11 @@ endif # Commands for linking programs with the C library. ifndef +link ifeq (yes,$(build-shared)) +ifeq (yes,$(build-pie-default)) +no-pie-ldflag = -no-pie ++link = $(+link-pie) ++link-tests = $(+link-pie-tests) +else +link-before-libc = $(CC) -nostdlib -nostartfiles -o $@ \ $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \ $(combreloc-LDFLAGS) $(relro-LDFLAGS) $(hashstyle-LDFLAGS) \ @@ -462,6 +467,7 @@ $(+link-before-libc) $(rtld-tests-LDFLAGS) $(link-libc-tests) \ $(+link-after-libc) $(call after-link,$@) endef +endif else +link = $(+link-static) +link-tests = $(+link-static-tests) -- cgit v1.1