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Bug 857628 - Add a --enable-pie configure option to build target programs as position independent executables when supported by gcc/clang. r=mshal

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This commit is contained in:
Mike Hommey 2014-09-26 07:33:56 +09:00
parent 1cef4e3e48
commit 2a378e99b5
2 changed files with 34 additions and 4 deletions
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28
build/autoconf/compiler-opts.m4
View File

@ -326,6 +326,34 @@ if test "$GNU_CC" -a "$GCC_USE_GNU_LD" -a -z "$DEVELOPER_OPTIONS"; then
DSO_LDOPTS="$DSO_LDOPTS -Wl,--gc-sections"
fi
fi
# bionic in Android < 4.1 doesn't support PIE
# On OSX, the linker defaults to building PIE programs when targetting OSX 10.7+,
# but not when targetting OSX < 10.7. OSX < 10.7 doesn't support running PIE
# programs, so as long as support for OSX 10.6 is kept, we can't build PIE.
# Even after dropping 10.6 support, MOZ_PIE would not be useful since it's the
# default (and clang says the -pie option is not used).
# On other Unix systems, some file managers (Nautilus) can't start PIE programs
MOZ_PIE=
MOZ_ARG_ENABLE_BOOL(pie,
[ --enable-pie Enable Position Independent Executables],
MOZ_PIE=1,
MOZ_PIE= )
if test "$GNU_CC" -a -n "$MOZ_PIE"; then
AC_MSG_CHECKING([for PIE support])
_SAVE_LDFLAGS=$LDFLAGS
LDFLAGS="$LDFLAGS -pie"
AC_TRY_LINK(,,AC_MSG_RESULT([yes])
[MOZ_PROGRAM_LDFLAGS="$MOZ_PROGRAM_LDFLAGS -pie"],
AC_MSG_RESULT([no])
AC_MSG_ERROR([--enable-pie requires PIE support from the linker.]))
LDFLAGS=$_SAVE_LDFLAGS
fi
AC_SUBST(MOZ_PROGRAM_LDFLAGS)
])
dnl GCC and clang will fail if given an unknown warning option like -Wfoobar.

10
config/rules.mk
View File

@ -641,6 +641,8 @@ endif
endif # NO_PROFILE_GUIDED_OPTIMIZE
MOZ_PROGRAM_LDFLAGS += $(MOZ_GLUE_PROGRAM_LDFLAGS)
##############################################
checkout:
@ -673,7 +675,7 @@ $(PROGRAM): $(PROGOBJS) $(STATIC_LIBS_DEPS) $(EXTRA_DEPS) $(EXE_DEF_FILE) $(RESF
$(REPORT_BUILD)
@$(RM) $@.manifest
ifeq (_WINNT,$(GNU_CC)_$(OS_ARCH))
$(EXPAND_LD) -NOLOGO -OUT:$@ -PDB:$(LINK_PDBFILE) $(WIN32_EXE_LDFLAGS) $(LDFLAGS) $(MOZ_GLUE_PROGRAM_LDFLAGS) $(PROGOBJS) $(RESFILE) $(STATIC_LIBS) $(SHARED_LIBS) $(EXTRA_LIBS) $(OS_LIBS)
$(EXPAND_LD) -NOLOGO -OUT:$@ -PDB:$(LINK_PDBFILE) $(WIN32_EXE_LDFLAGS) $(LDFLAGS) $(MOZ_PROGRAM_LDFLAGS) $(PROGOBJS) $(RESFILE) $(STATIC_LIBS) $(SHARED_LIBS) $(EXTRA_LIBS) $(OS_LIBS)
ifdef MSMANIFEST_TOOL
@if test -f $@.manifest; then \
if test -f '$(srcdir)/$@.manifest'; then \
@ -694,7 +696,7 @@ ifdef MOZ_PROFILE_GENERATE
touch -t `date +%Y%m%d%H%M.%S -d 'now+5seconds'` pgo.relink
endif
else # !WINNT || GNU_CC
$(EXPAND_CCC) -o $@ $(CXXFLAGS) $(PROGOBJS) $(RESFILE) $(WIN32_EXE_LDFLAGS) $(LDFLAGS) $(WRAP_LDFLAGS) $(STATIC_LIBS) $(MOZ_GLUE_PROGRAM_LDFLAGS) $(SHARED_LIBS) $(EXTRA_LIBS) $(OS_LIBS) $(BIN_FLAGS) $(EXE_DEF_FILE) $(STLPORT_LIBS)
$(EXPAND_CCC) -o $@ $(CXXFLAGS) $(PROGOBJS) $(RESFILE) $(WIN32_EXE_LDFLAGS) $(LDFLAGS) $(WRAP_LDFLAGS) $(STATIC_LIBS) $(MOZ_PROGRAM_LDFLAGS) $(SHARED_LIBS) $(EXTRA_LIBS) $(OS_LIBS) $(BIN_FLAGS) $(EXE_DEF_FILE) $(STLPORT_LIBS)
$(call CHECK_BINARY,$@)
endif # WINNT && !GNU_CC
@ -742,7 +744,7 @@ endif
$(SIMPLE_PROGRAMS): %$(BIN_SUFFIX): %.$(OBJ_SUFFIX) $(STATIC_LIBS_DEPS) $(EXTRA_DEPS) $(GLOBAL_DEPS)
$(REPORT_BUILD)
ifeq (_WINNT,$(GNU_CC)_$(OS_ARCH))
$(EXPAND_LD) -nologo -out:$@ -pdb:$(LINK_PDBFILE) $< $(WIN32_EXE_LDFLAGS) $(LDFLAGS) $(MOZ_GLUE_PROGRAM_LDFLAGS) $(STATIC_LIBS) $(SHARED_LIBS) $(EXTRA_LIBS) $(OS_LIBS)
$(EXPAND_LD) -nologo -out:$@ -pdb:$(LINK_PDBFILE) $< $(WIN32_EXE_LDFLAGS) $(LDFLAGS) $(MOZ_PROGRAM_LDFLAGS) $(STATIC_LIBS) $(SHARED_LIBS) $(EXTRA_LIBS) $(OS_LIBS)
ifdef MSMANIFEST_TOOL
@if test -f $@.manifest; then \
mt.exe -NOLOGO -MANIFEST $@.manifest -OUTPUTRESOURCE:$@\;1; \
@ -750,7 +752,7 @@ ifdef MSMANIFEST_TOOL
fi
endif # MSVC with manifest tool
else
$(EXPAND_CCC) $(CXXFLAGS) -o $@ $< $(WIN32_EXE_LDFLAGS) $(LDFLAGS) $(WRAP_LDFLAGS) $(STATIC_LIBS) $(MOZ_GLUE_PROGRAM_LDFLAGS) $(SHARED_LIBS) $(EXTRA_LIBS) $(OS_LIBS) $(BIN_FLAGS) $(STLPORT_LIBS)
$(EXPAND_CCC) $(CXXFLAGS) -o $@ $< $(WIN32_EXE_LDFLAGS) $(LDFLAGS) $(WRAP_LDFLAGS) $(STATIC_LIBS) $(MOZ_PROGRAM_LDFLAGS) $(SHARED_LIBS) $(EXTRA_LIBS) $(OS_LIBS) $(BIN_FLAGS) $(STLPORT_LIBS)
$(call CHECK_BINARY,$@)
endif # WINNT && !GNU_CC