[Buildroot] [PATCH 1/1] package/wireshark: fix static build with libxml2 and lzma

[Thomas Petazzoni <thomas.petazzoni@bootlin.com>]

Hello Fabrice,

On Wed, 24 Apr 2019 21:47:41 +0200
Fabrice Fontaine <fontaine.fabrice@gmail.com> wrote:

> diff --git a/package/wireshark/0004-FindXml2-use-pkg-config-to-find-libxml2-dependencies.patch b/package/wireshark/0004-FindXml2-use-pkg-config-to-find-libxml2-dependencies.patch
> new file mode 100644
> index 0000000000..ab549021e4
> --- /dev/null
> +++ b/package/wireshark/0004-FindXml2-use-pkg-config-to-find-libxml2-dependencies.patch
> @@ -0,0 +1,33 @@
> +From e6a2e71831f0699e9759e0579a00eea5fcb93696 Mon Sep 17 00:00:00 2001
> +From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
> +Date: Wed, 24 Apr 2019 20:23:00 +0200
> +Subject: [PATCH] FindXml2: use pkg-config to find libxml2 dependencies
> +
> +On UNIX, when statically built, libxml2 can depends on other libraries such
> +as lzma. These dependencies are already retrieved through pkg-config so
> +append them to LIBXML2_LIBRARIES otherwise static build will fail
> +
> +Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
> +[Upstream status: not sent yet]
> +---
> + cmake/modules/FindLibXml2.cmake | 4 ++++
> + 1 file changed, 4 insertions(+)
> +
> +diff --git a/cmake/modules/FindLibXml2.cmake b/cmake/modules/FindLibXml2.cmake
> +index 99d70af57d..2a4b1f470f 100644
> +--- a/cmake/modules/FindLibXml2.cmake
> ++++ b/cmake/modules/FindLibXml2.cmake
> +@@ -98,6 +98,10 @@ endif()
> + 
> + set(LIBXML2_INCLUDE_DIRS ${LIBXML2_INCLUDE_DIR} ${PC_LIBXML_INCLUDE_DIRS})
> + set(LIBXML2_LIBRARIES ${LIBXML2_LIBRARY})
> ++# Include transitive dependencies for static linking.
> ++if(UNIX)
> ++    list(APPEND LIBXML2_LIBRARIES ${PC_LIBXML_LIBRARIES})
> ++endif()

Why does this needs to be conditional on "UNIX" ? Why isn't it possible
to always use PC_LIBXML_LIBRARIES ?

Thanks!

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com