[PATCH] libidn2: fix buildpaths qa issue in .pc file

[<kai.kang@windriver.com>]

From: Kai Kang <kai.kang@windriver.com>

When enable buildpaths qa check, it show warning of libidn2:

| WARNING: libidn2-2.0.5-r0 do_package_qa: QA Issue: File
/work/armv5e-poky-linux-gnueabi/libidn2/2.0.5-r0/packages-split/libidn2-dev/usr/lib/pkgconfig/libidn2.pc
in package contained reference to tmpdir [buildpaths]

Fix the issue by substituting @LTLIBUNISTRING@ in the .pc file.

Signed-off-by: Kai Kang <kai.kang@windriver.com>
---
 .../fix-host-contamination-in-pc-file.patch   | 22 +++++++++++++++++++
 meta/recipes-extended/libidn/libidn2_2.0.5.bb |  3 ++-
 2 files changed, 24 insertions(+), 1 deletion(-)
 create mode 100644 meta/recipes-extended/libidn/libidn2/fix-host-contamination-in-pc-file.patch

diff --git a/meta/recipes-extended/libidn/libidn2/fix-host-contamination-in-pc-file.patch b/meta/recipes-extended/libidn/libidn2/fix-host-contamination-in-pc-file.patch
new file mode 100644
index 0000000000..026312ab0a
--- /dev/null
+++ b/meta/recipes-extended/libidn/libidn2/fix-host-contamination-in-pc-file.patch
@@ -0,0 +1,22 @@
+Configure option --with-libunistring-prefix is set to fix compile-host-path qa
+issue. It causes @LTLIBUNISTRING@ in line 'Libs.private' of libidn2.pc replaced
+with ${STAGING_EXECPREFIXDIR} which causes buildpaths qa issue.
+
+libunistring is a dependency of libidn2 and installs libraries to standard
+library path, so just substitute @LTLIBUNISTRING@ with standard library path
+and -lunistring in libidn2.pc.in.
+
+Upstream-Status: Inappropriate [embedded specific]
+
+Signed-off-by: Kai Kang <kai.kang@windriver.com>
+---
+diff --git a/libidn2.pc.in b/libidn2.pc.in
+index 0dade23..24cc29d 100644
+--- a/libidn2.pc.in
++++ b/libidn2.pc.in
+@@ -8,4 +8,4 @@ Description: Library implementing IDNA2008 and TR46
+ Version: @PACKAGE_VERSION@
+ Cflags: -I${includedir}
+ Libs: -L${libdir} -lidn2
+-Libs.private: @LTLIBICONV@ @LTLIBUNISTRING@
++Libs.private: @LTLIBICONV@ -L${libdir} -lunistring
diff --git a/meta/recipes-extended/libidn/libidn2_2.0.5.bb b/meta/recipes-extended/libidn/libidn2_2.0.5.bb
index 0daf7a6877..a243a9181e 100644
--- a/meta/recipes-extended/libidn/libidn2_2.0.5.bb
+++ b/meta/recipes-extended/libidn/libidn2_2.0.5.bb
@@ -11,7 +11,8 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=ab90e75ef97cc6318ce4f2fbda62fe4d \
 
 SRC_URI = "${GNU_MIRROR}/libidn/${BPN}-${PV}.tar.gz \
            file://Unset-need_charset_alias-when-building-for-musl.patch \
-          "
+           file://fix-host-contamination-in-pc-file.patch \
+           "
 SRC_URI[md5sum] = "eaf9a5b9d03b0cce3760f34b3124eb36"
 SRC_URI[sha256sum] = "53f69170886f1fa6fa5b332439c7a77a7d22626a82ef17e2c1224858bb4ca2b8"
 
-- 
2.20.0