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authorBrendan Higgins <brendanhiggins@google.com>2020-01-25 01:14:01 +0300
committerRichard Weinberger <richard@nod.at>2020-03-30 00:51:24 +0300
commit3363179385629c1804ea846f4e72608c2201a81e (patch)
treeb495d1e6e83d72b0c9d1e29edcbf8e1902313c2f /arch/um
parent5bef0a153bf29150357ff60283315a933f05c994 (diff)
downloadlinux-3363179385629c1804ea846f4e72608c2201a81e.tar.xz
um: Make CONFIG_STATIC_LINK actually static
Currently, CONFIG_STATIC_LINK can be enabled with options which cannot be statically linked, namely UML_NET_VECTOR, UML_NET_VDE, and UML_NET_PCAP; this is because glibc tries to load NSS which does not support being statically linked. So make CONFIG_STATIC_LINK depend on !UML_NET_VECTOR && !UML_NET_VDE && !UML_NET_PCAP. Link: https://lore.kernel.org/lkml/f658f317-be54-ed75-8296-c373c2dcc697@cambridgegreys.com/#t Signed-off-by: Brendan Higgins <brendanhiggins@google.com> Acked-By: Anton Ivanov <anton.ivanov@cambridgegreys.com> Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um')
-rw-r--r--arch/um/Kconfig8
-rw-r--r--arch/um/drivers/Kconfig3
2 files changed, 10 insertions, 1 deletions
diff --git a/arch/um/Kconfig b/arch/um/Kconfig
index 817a4c838a06..96ab7026b037 100644
--- a/arch/um/Kconfig
+++ b/arch/um/Kconfig
@@ -62,9 +62,12 @@ config NR_CPUS
source "arch/$(HEADER_ARCH)/um/Kconfig"
+config FORBID_STATIC_LINK
+ bool
+
config STATIC_LINK
bool "Force a static link"
- default n
+ depends on !FORBID_STATIC_LINK
help
This option gives you the ability to force a static link of UML.
Normally, UML is linked as a shared binary. This is inconvenient for
@@ -73,6 +76,9 @@ config STATIC_LINK
Additionally, this option enables using higher memory spaces (up to
2.75G) for UML.
+ NOTE: This option is incompatible with some networking features which
+ depend on features that require being dynamically loaded (like NSS).
+
config LD_SCRIPT_STATIC
bool
default y
diff --git a/arch/um/drivers/Kconfig b/arch/um/drivers/Kconfig
index 72d417055782..9160ead56e33 100644
--- a/arch/um/drivers/Kconfig
+++ b/arch/um/drivers/Kconfig
@@ -234,6 +234,7 @@ config UML_NET_DAEMON
config UML_NET_VECTOR
bool "Vector I/O high performance network devices"
depends on UML_NET
+ select FORBID_STATIC_LINK
help
This User-Mode Linux network driver uses multi-message send
and receive functions. The host running the UML guest must have
@@ -245,6 +246,7 @@ config UML_NET_VECTOR
config UML_NET_VDE
bool "VDE transport (obsolete)"
depends on UML_NET
+ select FORBID_STATIC_LINK
help
This User-Mode Linux network transport allows one or more running
UMLs on a single host to communicate with each other and also
@@ -292,6 +294,7 @@ config UML_NET_MCAST
config UML_NET_PCAP
bool "pcap transport (obsolete)"
depends on UML_NET
+ select FORBID_STATIC_LINK
help
The pcap transport makes a pcap packet stream on the host look
like an ethernet device inside UML. This is useful for making