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selftests/x86: Detect -no-pie availability

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Some toolchains need -no-pie to build all tests, others do not support
the -no-pie flag at all.  Therefore, add another test for the
availability of the flag.

This amends commit 3346a6a4e5
("selftests: x86: sysret_ss_attrs doesn't build on a PIE build").

Signed-off-by: Florian Weimer <fweimer@redhat.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
This commit is contained in:
Florian Weimer 2018-05-02 14:10:32 +02:00 committed by Shuah Khan (Samsung OSG)
parent 0852991470
commit 0dd3a6945f
2 changed files with 17 additions and 1 deletions
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8
tools/testing/selftests/x86/Makefile
View File

@ -8,6 +8,7 @@ include ../lib.mk
UNAME_M := $(shell uname -m)
CAN_BUILD_I386 := $(shell ./check_cc.sh $(CC) trivial_32bit_program.c -m32)
CAN_BUILD_X86_64 := $(shell ./check_cc.sh $(CC) trivial_64bit_program.c)
CAN_BUILD_WITH_NOPIE := $(shell ./check_cc.sh $(CC) trivial_program.c -no-pie)
TARGETS_C_BOTHBITS := single_step_syscall sysret_ss_attrs syscall_nt test_mremap_vdso \
check_initial_reg_state sigreturn iopl mpx-mini-test ioperm \
@ -31,7 +32,12 @@ BINARIES_64 := $(TARGETS_C_64BIT_ALL:%=%_64)
BINARIES_32 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_32))
BINARIES_64 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_64))
CFLAGS := -O2 -g -std=gnu99 -pthread -Wall -no-pie
CFLAGS := -O2 -g -std=gnu99 -pthread -Wall
# call32_from_64 in thunks.S uses absolute addresses.
ifeq ($(CAN_BUILD_WITH_NOPIE),1)
CFLAGS += -no-pie
endif
define gen-target-rule-32
$(1) $(1)_32: $(OUTPUT)/$(1)_32

10
tools/testing/selftests/x86/trivial_program.c Normal file
View File

@ -0,0 +1,10 @@
/* Trivial program to check that compilation with certain flags is working. */
#include <stdio.h>
int
main(void)
{
puts("");
return 0;
}