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freebsd-skq/lib/csu/Makefile.inc

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Enable GCC stack protection (aka Propolice) for userland: - It is opt-out for now so as to give it maximum testing, but it may be turned opt-in for stable branches depending on the consensus. You can turn it off with WITHOUT_SSP. - WITHOUT_SSP was previously used to disable the build of GNU libssp. It is harmless to steal the knob as SSP symbols have been provided by libc for a long time, GNU libssp should not have been much used. - SSP is disabled in a few corners such as system bootstrap programs (sys/boot), process bootstrap code (rtld, csu) and SSP symbols themselves. - It should be safe to use -fstack-protector-all to build world, however libc will be automatically downgraded to -fstack-protector because it breaks rtld otherwise. - This option is unavailable on ia64. Enable GCC stack protection (aka Propolice) for kernel: - It is opt-out for now so as to give it maximum testing. - Do not compile your kernel with -fstack-protector-all, it won't work. Submitted by: Jeremie Le Hen <jeremie@le-hen.org>
2008-06-25 21:33:28 +00:00
# $FreeBSD$
Fix build when WITH_SSP is set explicitly. Submitted by: Jeremie Le Hen
2009-02-21 15:04:31 +00:00
SSP_CFLAGS=
Build lib/ with WARNS=6 by default. Similar to libexec/, do the same with lib/. Make WARNS=6 the norm and lower it when needed. I'm setting WARNS?=0 for secure/. It seems secure/ includes the Makefile.inc provided by lib/. I'm not going to touch that directory. Most of the code there is contributed anyway.
2010-01-02 09:58:07 +00:00
Stop calling _init/_fini methods from crt1 for dynamic binaries. Do call preinit, init and fini arrays methods from crt1 for static binaries. Mark new crt1 with FreeBSD-specific ELF note. Move some common crt1 code into new MI file ignore_init.c, to reduce duplication. Also, conservatively adjust nearby sources for style. Reviewed by: kan Tested by: andrew (arm), flo (sparc64) MFC after: 3 weeks
2012-03-11 20:04:09 +00:00
SED_FIX_NOTE = -i "" -e '/\.note\.tag/s/progbits/note/'
Add the Clang specific -Wmissing-variable-declarations to WARNS=6. This compiler flag enforces that that people either mark variables static or use an external declarations for the variable, similar to how -Wmissing-prototypes works for functions. Due to the fact that Yacc/Lex generate code that cannot trivially be changed to not warn because of this (lots of yy* variables), add a NO_WMISSING_VARIABLE_DECLARATIONS that can be used to turn off this specific compiler warning. Announced on: toolchain@
2013-04-19 19:45:00 +00:00
NO_WMISSING_VARIABLE_DECLARATIONS=
Implement a BSD licensed crtbegin/crtend These are needed for .ctors/.dtors and .jcr handling. The former needs all the function pointers to be called in the correct order from the .init/.fini section. The latter just needs to call a gcj specific function if it exists with a pointer to the start of the .jcr section. This is currently disabled until __dso_handle support is added. Reviewed by: emaste MFC after: 1 month Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D17587
2018-10-25 17:39:41 +00:00
.include <src.opts.mk>
.if ${MK_BSD_CRTBEGIN} != "no" && !defined(BUILDING_TESTS)
OBJS+= crtbegin.o crtbeginS.o crtbeginT.o
OBJS+= crtend.o crtendS.o
CFLAGS_CRTS= -DSHARED ${PICFLAG}
crtbegin.o: crtbegin.c
crtbeginS.o: crtbegin.c
crtbeginT.o: crtbegin.c
crtend.o: crtend.c
crtendS.o: crtend.c
crtbegin.o crtend.o crtbeginT.o:
${CC} ${CFLAGS} -I${.CURDIR} -c -o ${.TARGET} ${.ALLSRC}
crtbeginS.o crtendS.o:
${CC} ${CFLAGS} -I${.CURDIR} ${CFLAGS_CRTS} -c -o ${.TARGET} ${.ALLSRC}
.endif
Use default WARNS setting (of 6) for lib/csu. PR: bin/140089 Reviewed by: jmallett Approved by: ed (co-mentor)
2010-03-05 13:29:05 +00:00
.include "../Makefile.inc"
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