freebsd-dev/usr.bin/clang/Makefile.inc

# $FreeBSD$

WARNS?=		0

.include <bsd.compiler.mk>

MK_PIE:=	no	# Explicit libXXX.a references

.if ${COMPILER_TYPE} == "clang"
DEBUG_FILES_CFLAGS= -gline-tables-only
.else
DEBUG_FILES_CFLAGS= -g1
.endif

.if ${MACHINE_ARCH:Mmips*} && ${MACHINE_ARCH:Mmips64*} == ""
CFLAGS+= -mxgot
CXXFLAGS+= -mxgot
.endif

.include "../Makefile.inc"
Undo r305299, since it also sets up BINDIR, via usr.bin/Makefile.inc. Just set WARNS to zero instead. 2016-09-02 20:07:05 +00:00			`# $FreeBSD$`

			`WARNS?= 0`

Improve the coverage of debug symbols for MK_DEBUG_FILES. - Include debug symbols in static libraries. This permits binaries to include debug symbols for functions obtained from static libraries. - Permit the C/C++ compiler flags added for MK_DEBUG_FILES to be overridden by setting DEBUG_FILES_CFLAGS. Use this to limit the debug information for llvm libraries and binaries. Reviewed by: emaste Sponsored by: DARPA / AFRL Differential Revision: https://reviews.freebsd.org/D12025 2017-08-23 23:30:25 +00:00			`.include <bsd.compiler.mk>`

Add WITH_PIE knob to build Position Independent Executables Building binaries as PIE allows the executable itself to be loaded at a random address when ASLR is enabled (not just its shared libraries). With this change PIE objects have a .pieo extension and INTERNALLIB libraries libXXX_pie.a. MK_PIE is disabled for some kerberos5 tools, Clang, and Subversion, as they explicitly reference .a libraries in their Makefiles. These can be addressed on an individual basis later. MK_PIE is also disabled for rtld-elf because it is already position-independent using bespoke Makefile rules. Currently only dynamically linked binaries will be built as PIE. Discussed with: dim Reviewed by: kib MFC after: 1 month Relnotes: Yes Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D18423 2019-02-15 22:22:38 +00:00			`MK_PIE:= no # Explicit libXXX.a references`

Improve the coverage of debug symbols for MK_DEBUG_FILES. - Include debug symbols in static libraries. This permits binaries to include debug symbols for functions obtained from static libraries. - Permit the C/C++ compiler flags added for MK_DEBUG_FILES to be overridden by setting DEBUG_FILES_CFLAGS. Use this to limit the debug information for llvm libraries and binaries. Reviewed by: emaste Sponsored by: DARPA / AFRL Differential Revision: https://reviews.freebsd.org/D12025 2017-08-23 23:30:25 +00:00			`.if ${COMPILER_TYPE} == "clang"`
			`DEBUG_FILES_CFLAGS= -gline-tables-only`
			`.else`
			`DEBUG_FILES_CFLAGS= -g1`
			`.endif`

clang: use -mxgot for 32-bit mips Various bits in usr.bin/clang/* will fail to compile without -mxgot due to truncated relocations. -mxgot entails a speed penalty, but I suspect we don't care as much about compiler performance in 32-bit mips land. Reviewed by: arichardson Differential Revision: https://reviews.freebsd.org/D21698 2019-10-02 17:15:38 +00:00			`.if ${MACHINE_ARCH:Mmips} && ${MACHINE_ARCH:Mmips64} == ""`
			`CFLAGS+= -mxgot`
			`CXXFLAGS+= -mxgot`
			`.endif`

Undo r305299, since it also sets up BINDIR, via usr.bin/Makefile.inc. Just set WARNS to zero instead. 2016-09-02 20:07:05 +00:00			`.include "../Makefile.inc"`