[oe] [meta-networking][PATCH] squid: fix configure host contamination

[Yi Zhao]

From: Yue Tao <yue.tao at windriver.com>

When configuring squid with --enable-esi option,
the following error was observed:
[snip]
checking libxml/parser.h usability... no
checking libxml/parser.h presence... no
checking for libxml/parser.h... no
configure: Failed to find libxml2 header file libxml/parser.h
[snip]
ERROR: This autoconf log indicates errors, it looked at host include
and/or library paths while determining system capabilities.
[snip]

It tried to search libxml header file in host path. Set the SYSROOT
to avoid this host contamination.

Signed-off-by: Yue Tao <yue.tao at windriver.com>
Signed-off-by: Yi Zhao <yi.zhao at windriver.com>
---
 .../squid/files/set_sysroot_patch.patch            | 26 ++++++++++++++++++++++
 .../recipes-daemons/squid/squid_3.5.20.bb          |  6 +++++
 2 files changed, 32 insertions(+)
 create mode 100644 meta-networking/recipes-daemons/squid/files/set_sysroot_patch.patch

diff --git a/meta-networking/recipes-daemons/squid/files/set_sysroot_patch.patch b/meta-networking/recipes-daemons/squid/files/set_sysroot_patch.patch
new file mode 100644
index 0000000..68733f9
--- /dev/null
+++ b/meta-networking/recipes-daemons/squid/files/set_sysroot_patch.patch
@@ -0,0 +1,26 @@
+diff --git a/configure.ac.old b/configure.ac
+index 54eda73..874f48e 100644
+--- a/configure.ac.old
++++ b/configure.ac
+@@ -964,15 +964,15 @@ if test "x$squid_opt_use_esi" = "xyes" -a "x$with_libxml2" != "xno" ; then
+   dnl Find the main header and include path...
+   AC_CACHE_CHECK([location of libxml2 include files], [ac_cv_libxml2_include], [
+     AC_CHECK_HEADERS([libxml/parser.h], [], [
+-      AC_MSG_NOTICE([Testing in /usr/include/libxml2])
++      AC_MSG_NOTICE([Testing in $SYSROOT/usr/include/libxml2])
+       SAVED_CPPFLAGS="$CPPFLAGS"
+-      CPPFLAGS="-I/usr/include/libxml2 $CPPFLAGS"
++      CPPFLAGS="-I$SYSROOT/usr/include/libxml2 $CPPFLAGS"
+       unset ac_cv_header_libxml_parser_h
+-      AC_CHECK_HEADERS([libxml/parser.h], [ac_cv_libxml2_include="-I/usr/include/libxml2"], [
+-        AC_MSG_NOTICE([Testing in /usr/local/include/libxml2])
+-        CPPFLAGS="-I/usr/local/include/libxml2 $SAVED_CPPFLAGS"
++      AC_CHECK_HEADERS([libxml/parser.h], [ac_cv_libxml2_include="-I$SYSROOT/usr/include/libxml2"], [
++        AC_MSG_NOTICE([Testing in $SYSROOT/usr/local/include/libxml2])
++        CPPFLAGS="-I$SYSROOT/usr/local/include/libxml2 $SAVED_CPPFLAGS"
+         unset ac_cv_header_libxml_parser_h
+-        AC_CHECK_HEADERS([libxml/parser.h], [ac_cv_libxml2_include="-I/usr/local/include/libxml2"], [
++        AC_CHECK_HEADERS([libxml/parser.h], [ac_cv_libxml2_include="-I$SYSROOT/usr/local/include/libxml2"], [
+           AC_MSG_NOTICE([Failed to find libxml2 header file libxml/parser.h])
+         ])
+       ])
diff --git a/meta-networking/recipes-daemons/squid/squid_3.5.20.bb b/meta-networking/recipes-daemons/squid/squid_3.5.20.bb
index f26aebe..3ce195a 100644
--- a/meta-networking/recipes-daemons/squid/squid_3.5.20.bb
+++ b/meta-networking/recipes-daemons/squid/squid_3.5.20.bb
@@ -19,6 +19,7 @@ SRC_URI = "http://www.squid-cache.org/Versions/v${MAJ_VER}/${MIN_VER}/${BPN}-${P
            file://squid-use-serial-tests-config-needed-by-ptest.patch \
            file://run-ptest \
            file://volatiles.03_squid \
+           file://set_sysroot_patch.patch \
 "
 
 LIC_FILES_CHKSUM = "file://COPYING;md5=c492e2d6d32ec5c1aad0e0609a141ce9 \
@@ -48,6 +49,11 @@ EXTRA_OECONF += "--with-default-user=squid --enable-auth-basic='${BASIC_AUTH}'"
 export BUILDCXXFLAGS="${BUILD_CXXFLAGS}"
 
 TESTDIR = "test-suite"
+
+do_configure_prepend() {
+    export SYSROOT=$PKG_CONFIG_SYSROOT_DIR
+}
+
 do_compile_ptest() {
     oe_runmake -C ${TESTDIR} buildtest-TESTS
 }
-- 
2.7.4