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Re: [tor-bugs] #5665 [Obfsproxy]: obfsproxy: "warning: -fPIC ignored for target (all code is position independent)" when compilign on Windows
#5665: obfsproxy: "warning: -fPIC ignored for target (all code is position
independent)" when compilign on Windows
-----------------------+----------------------------------------------------
Reporter: asn | Owner: asn
Type: defect | Status: needs_review
Priority: normal | Milestone:
Component: Obfsproxy | Version:
Keywords: | Parent:
Points: | Actualpoints:
-----------------------+----------------------------------------------------
Comment(by Sebastian):
hrm. Here's another idea:
{{{
diff --git a/m4/ax_build_hardening.m4 b/m4/ax_build_hardening.m4
index 590a00d..ad06fcc 100644
--- a/m4/ax_build_hardening.m4
+++ b/m4/ax_build_hardening.m4
@@ -46,18 +46,19 @@ AC_DEFUN_ONCE([AX_ENABLE_HARDENING], [
### Compiler Hardening ###
# This requires ax_check_compile_flag.m4
-AX_CHECK_COMPILE_FLAG([-D_FORTIFY_SOURCE=2], [CFLAGS="$CFLAGS
-D_FORTIFY_SOURCE
-AX_CHECK_COMPILE_FLAG([-fstack-protector-all], [CFLAGS="$CFLAGS -fstack-
protect
-AX_CHECK_COMPILE_FLAG([-fwrapv], [CFLAGS="$CFLAGS -fwrapv"])
-AX_CHECK_COMPILE_FLAG([-fPIE], [CFLAGS="$CFLAGS -fPIE"])
-AX_CHECK_COMPILE_FLAG([--param ssp-buffer-size=1], [CFLAGS="$CFLAGS
--param ssp
-AX_CHECK_COMPILE_FLAG([-fno-strict-aliasing], [CFLAGS="$CFLAGS -fno-
strict-alia
-AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CFLAGS="$CFLAGS -fno-
strict-over
+AX_CHECK_COMPILE_FLAG([-D_FORTIFY_SOURCE=2], [CFLAGS="$CFLAGS
-D_FORTIFY_SOURCE
+AX_CHECK_COMPILE_FLAG([-fstack-protector-all], [CFLAGS="$CFLAGS -fstack-
protect
+AX_CHECK_COMPILE_FLAG([-fwrapv], [CFLAGS="$CFLAGS -fwrapv"], [],
[-Werror])
+AX_CHECK_COMPILE_FLAG([-fPIE], [CFLAGS="$CFLAGS -fPIE"], [], [-Werror])
+AX_CHECK_COMPILE_FLAG([--param ssp-buffer-size=1], [CFLAGS="$CFLAGS
--param ssp
+AX_CHECK_COMPILE_FLAG([-fno-strict-aliasing], [CFLAGS="$CFLAGS -fno-
strict-alia
+AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CFLAGS="$CFLAGS -fno-
strict-over
### Linker Hardening ###
# This requires ax_check_link_flag.m4
-AX_CHECK_LINK_FLAG([-pie], [LDFLAGS="$LDFLAGS -pie"])
-AX_CHECK_LINK_FLAG([-z relro], [LDFLAGS="$LDFLAGS -z relro"])
-AX_CHECK_LINK_FLAG([-z now], [LDFLAGS="$LDFLAGS -z now"])
+AX_CHECK_LINK_FLAG([-pie], [LDFLAGS="$LDFLAGS -pie"], [], [-Werror])
+AX_CHECK_LINK_FLAG([-Wl,-pie], [LDFLAGS="$LDFLAGS -Wl,-pie"], [],
[-Werror])
+AX_CHECK_LINK_FLAG([-z relro], [LDFLAGS="$LDFLAGS -z relro"], [],
[-Werror])
+AX_CHECK_LINK_FLAG([-z now], [LDFLAGS="$LDFLAGS -z now"], [], [-Werror])
])
}}}
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/5665#comment:2>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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