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| author | H.J. Lu <hjl.tools@gmail.com> | 2015-06-25 02:37:04 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2015-06-25 02:49:53 -0700 |
| commit | cc08749b2d1c68284b25b157fbbe1ff219495cae (patch) | |
| tree | 0b0f104c2866770c1983e521184869f3829b40f6 /Makeconfig | |
| parent | 45a8f0e6629d7772b9fa1aef0389bc51a094424d (diff) | |
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 $(+link-pie-tests) if default to PIE.
* config.make.in (build-pie-default): New.
* configure.ac (libc_cv_pie_default): New. Set to yes if -fPIE
is default. AC_SUBST.
* configure: Regenerated.
* elf/Makefile (LDFLAGS-tst-dlopen-aout): New.
Diffstat (limited to 'Makeconfig')
| -rw-r--r-- | Makeconfig | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Makeconfig b/Makeconfig index 0f4b5497c1..7b46323bd2 100644 --- a/Makeconfig +++ b/Makeconfig @@ -442,6 +442,11 @@ endif # Commands for linking programs with the C library. ifndef +link ifeq (yes,$(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) |