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[PATCH] uml: comments about libc-conflict guards 

While fixing myself the mktime conflict (which someone already merged), I also
improved a few comments.  Merge them up.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Paolo 'Blaisorblade' Giarrusso 2006-02-01 03:06:25 -08:00 committed by Linus Torvalds
parent 0c19585b0d
commit 98105d47d3
1 changed files with 9 additions and 5 deletions
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14
arch/um/Makefile
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@ -47,13 +47,16 @@ ARCH_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include
endif
SYS_DIR := $(ARCH_DIR)/include/sysdep-$(SUBARCH)
# -Dvmap=kernel_vmap affects everything, and prevents anything from
# referencing the libpcap.o symbol so named.
# -Dvmap=kernel_vmap prevents anything from referencing the libpcap.o symbol so
# named - it's a common symbol in libpcap, so we get a binary which crashes.
#
# Same things for in6addr_loopback - found in libc.
# Same things for in6addr_loopback and mktime - found in libc. For these two we
# only get link-time error, luckily.
#
# These apply to USER_CFLAGS to.
CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
$(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \
CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
$(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \
-Din6addr_loopback=kernel_in6addr_loopback
AFLAGS += $(ARCH_INCLUDE)
@ -66,6 +69,7 @@ USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \
# kernel_errno to separate them from the libc errno. This allows -fno-common
# in CFLAGS. Otherwise, it would cause ld to complain about the two different
# errnos.
# These apply to kernelspace only.
CFLAGS += -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \
-Dmktime=kernel_mktime