From: Ignat Korchagin <ignat@cloudflare.com> To: jdike@addtoit.com, richard@nod.at, anton.ivanov@cambridgegreys.com, brendanhiggins@google.com, masahiroy@kernel.org, linux-um@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Ignat Korchagin <ignat@cloudflare.com>, kernel-team@cloudflare.com Subject: [PATCH v3 3/3] um: allow static linking for non-glibc implementations Date: Wed, 15 Jul 2020 21:11:59 +0100 [thread overview] Message-ID: <20200715201159.54166-4-ignat@cloudflare.com> (raw) In-Reply-To: <20200715201159.54166-1-ignat@cloudflare.com> It is possible to produce a statically linked UML binary with UML_NET_VECTOR, UML_NET_VDE and UML_NET_PCAP options enabled using alternative libc implementations, which do not rely on NSS, such as musl. Allow static linking in this case. Signed-off-by: Ignat Korchagin <ignat@cloudflare.com> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Tested-by: Brendan Higgins <brendanhiggins@google.com> --- arch/um/Kconfig | 5 +---- arch/um/drivers/Kconfig | 3 --- 2 files changed, 1 insertion(+), 7 deletions(-) diff --git a/arch/um/Kconfig b/arch/um/Kconfig index 9318dc6d1a0c..beb98b3b9f75 100644 --- a/arch/um/Kconfig +++ b/arch/um/Kconfig @@ -62,12 +62,9 @@ config NR_CPUS source "arch/$(HEADER_ARCH)/um/Kconfig" -config FORBID_STATIC_LINK - bool - config STATIC_LINK bool "Force a static link" - depends on !FORBID_STATIC_LINK + depends on CC_CAN_LINK_STATIC_NO_RUNTIME_DEPS || (!UML_NET_VECTOR && !UML_NET_VDE && !UML_NET_PCAP) 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 diff --git a/arch/um/drivers/Kconfig b/arch/um/drivers/Kconfig index 9160ead56e33..72d417055782 100644 --- a/arch/um/drivers/Kconfig +++ b/arch/um/drivers/Kconfig @@ -234,7 +234,6 @@ 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 @@ -246,7 +245,6 @@ 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 @@ -294,7 +292,6 @@ 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 -- 2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: Ignat Korchagin <ignat@cloudflare.com> To: jdike@addtoit.com, richard@nod.at, anton.ivanov@cambridgegreys.com, brendanhiggins@google.com, masahiroy@kernel.org, linux-um@lists.infradead.org, linux-kernel@vger.kernel.org Cc: kernel-team@cloudflare.com, Ignat Korchagin <ignat@cloudflare.com> Subject: [PATCH v3 3/3] um: allow static linking for non-glibc implementations Date: Wed, 15 Jul 2020 21:11:59 +0100 [thread overview] Message-ID: <20200715201159.54166-4-ignat@cloudflare.com> (raw) In-Reply-To: <20200715201159.54166-1-ignat@cloudflare.com> It is possible to produce a statically linked UML binary with UML_NET_VECTOR, UML_NET_VDE and UML_NET_PCAP options enabled using alternative libc implementations, which do not rely on NSS, such as musl. Allow static linking in this case. Signed-off-by: Ignat Korchagin <ignat@cloudflare.com> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Tested-by: Brendan Higgins <brendanhiggins@google.com> --- arch/um/Kconfig | 5 +---- arch/um/drivers/Kconfig | 3 --- 2 files changed, 1 insertion(+), 7 deletions(-) diff --git a/arch/um/Kconfig b/arch/um/Kconfig index 9318dc6d1a0c..beb98b3b9f75 100644 --- a/arch/um/Kconfig +++ b/arch/um/Kconfig @@ -62,12 +62,9 @@ config NR_CPUS source "arch/$(HEADER_ARCH)/um/Kconfig" -config FORBID_STATIC_LINK - bool - config STATIC_LINK bool "Force a static link" - depends on !FORBID_STATIC_LINK + depends on CC_CAN_LINK_STATIC_NO_RUNTIME_DEPS || (!UML_NET_VECTOR && !UML_NET_VDE && !UML_NET_PCAP) 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 diff --git a/arch/um/drivers/Kconfig b/arch/um/drivers/Kconfig index 9160ead56e33..72d417055782 100644 --- a/arch/um/drivers/Kconfig +++ b/arch/um/drivers/Kconfig @@ -234,7 +234,6 @@ 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 @@ -246,7 +245,6 @@ 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 @@ -294,7 +292,6 @@ 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 -- 2.20.1 _______________________________________________ linux-um mailing list linux-um@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-um
next prev parent reply other threads:[~2020-07-15 20:12 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-07-15 20:11 [PATCH v3 0/3] um: allow static linking for non-glibc libc implementations Ignat Korchagin 2020-07-15 20:11 ` Ignat Korchagin 2020-07-15 20:11 ` [PATCH v3 1/3] um/kconfig: introduce CC_CAN_LINK_STATIC_NO_RUNTIME_DEPS Ignat Korchagin 2020-07-15 20:11 ` Ignat Korchagin 2020-07-15 20:11 ` [PATCH v3 2/3] um: some fixes to build UML with musl Ignat Korchagin 2020-07-15 20:11 ` Ignat Korchagin 2020-07-15 20:11 ` Ignat Korchagin [this message] 2020-07-15 20:11 ` [PATCH v3 3/3] um: allow static linking for non-glibc implementations Ignat Korchagin 2020-07-16 9:10 ` Johannes Berg 2020-07-16 9:10 ` Johannes Berg 2020-07-19 21:03 ` Ignat Korchagin 2020-07-19 21:03 ` Ignat Korchagin
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