svn commit: r293648 - head/lib/csu/arm

[Andrew Turner]

Author: andrew
Date: Sun Jan 10 23:41:31 2016
New Revision: 293648
URL: https://svnweb.freebsd.org/changeset/base/293648

Log:
  Use -mlong-calls to build crt1.o and gcrt1.o. This tells the compiler to
  generate code to branch based on an address in a register. This allows us
  to have binaries larger than the 32MiB limit of a branch instruction.
  
  The main use of this is with clang. Clang 3.8.0 has been shown to be larger
  than the above limit.

Modified:
  head/lib/csu/arm/Makefile

Modified: head/lib/csu/arm/Makefile
==============================================================================
--- head/lib/csu/arm/Makefile	Sun Jan 10 22:31:39 2016	(r293647)
+++ head/lib/csu/arm/Makefile	Sun Jan 10 23:41:31 2016	(r293648)
@@ -7,6 +7,7 @@ OBJS=		${SRCS:N*.h:R:S/$/.o/g}
 OBJS+=		Scrt1.o gcrt1.o
 CFLAGS+=	-I${.CURDIR}/../common \
 		-I${.CURDIR}/../../libc/include
+STATIC_CFLAGS+=	-mlong-calls
 
 FILES=		${OBJS}
 FILESMODE=	${LIBMODE}
@@ -23,14 +24,14 @@ CLEANFILES+=	crt1.s gcrt1.s Scrt1.s
 # directly compiled to .o files.
 
 crt1.s: crt1.c
-	${CC} ${CFLAGS} -S -o ${.TARGET} ${.CURDIR}/crt1.c
+	${CC} ${CFLAGS} ${STATIC_CFLAGS} -S -o ${.TARGET} ${.CURDIR}/crt1.c
 	sed ${SED_FIX_NOTE} ${.TARGET}
 
 crt1.o: crt1.s
 	${CC} ${ACFLAGS} -c -o ${.TARGET} crt1.s
 
 gcrt1.s: crt1.c
-	${CC} ${CFLAGS} -DGCRT -S -o ${.TARGET} ${.CURDIR}/crt1.c
+	${CC} ${CFLAGS} ${STATIC_CFLAGS} -DGCRT -S -o ${.TARGET} ${.CURDIR}/crt1.c
 	sed ${SED_FIX_NOTE} ${.TARGET}
 
 gcrt1.o: gcrt1.s