[PATCH 2/2] libpcre: enable JIT

[Ross Burton <ross.burton@intel.com>]

PCRE has an optional JIT for performance.

Add a PACKAGECONFIG for this, enabled by default.

Also add a patch so that auto-detection of JIT availablity, which is required to
enable the JIT by default, works with out-of-tree builds.

Signed-off-by: Ross Burton <ross.burton@intel.com>
---
 .../libpcre/libpcre/out-of-tree.patch              | 26 ++++++++++++++++++++++
 meta/recipes-support/libpcre/libpcre_8.43.bb       |  4 +++-
 2 files changed, 29 insertions(+), 1 deletion(-)
 create mode 100644 meta/recipes-support/libpcre/libpcre/out-of-tree.patch

diff --git a/meta/recipes-support/libpcre/libpcre/out-of-tree.patch b/meta/recipes-support/libpcre/libpcre/out-of-tree.patch
new file mode 100644
index 00000000000..687dcc034da
--- /dev/null
+++ b/meta/recipes-support/libpcre/libpcre/out-of-tree.patch
@@ -0,0 +1,26 @@
+In out-of-tree builds the #include fails because $srcdir isn't in the include path.  Set CPPFLAGS so that it is.
+
+Upstream-Status: Submitted [https://bugs.exim.org/show_bug.cgi?id=2379]
+Signed-off-by: Ross Burton <ross.burton@intel.com>
+
+Index: configure.ac
+===================================================================
+--- a/configure.ac	(revision 1749)
++++ b/configure.ac	(working copy)
+@@ -159,6 +159,8 @@
+ 
+ if test "$enable_jit" = "auto"; then
+   AC_LANG(C)
++  SAVE_CPPFLAGS=$CPPFLAGS
++  CPPFLAGS=-I$srcdir
+   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+   #define SLJIT_CONFIG_AUTO 1
+   #include "sljit/sljitConfigInternal.h"
+@@ -165,6 +167,7 @@
+   #if (defined SLJIT_CONFIG_UNSUPPORTED && SLJIT_CONFIG_UNSUPPORTED)
+   #error unsupported
+   #endif]])], enable_jit=yes, enable_jit=no)
++  CPPFLAGS=$SAVE_CPPFLAGS
+ fi
+ 
+ # Handle --disable-pcregrep-jit (enabled by default)
diff --git a/meta/recipes-support/libpcre/libpcre_8.43.bb b/meta/recipes-support/libpcre/libpcre_8.43.bb
index e28615a8ba7..08314efb9e4 100644
--- a/meta/recipes-support/libpcre/libpcre_8.43.bb
+++ b/meta/recipes-support/libpcre/libpcre_8.43.bb
@@ -9,6 +9,7 @@ LICENSE = "BSD"
 LIC_FILES_CHKSUM = "file://LICENCE;md5=91bee59d1b327eb1599b4c673e2fb3d1"
 SRC_URI = "https://ftp.pcre.org/pub/pcre/pcre-${PV}.tar.bz2 \
            file://fix-pcre-name-collision.patch \
+           file://out-of-tree.patch \
            file://run-ptest \
            file://Makefile \
 "
@@ -23,13 +24,14 @@ S = "${WORKDIR}/pcre-${PV}"
 PROVIDES += "pcre"
 DEPENDS += "bzip2 zlib"
 
-PACKAGECONFIG ??= "pcre8 unicode-properties"
+PACKAGECONFIG ??= "pcre8 unicode-properties jit"
 
 PACKAGECONFIG[pcre8] = "--enable-pcre8,--disable-pcre8"
 PACKAGECONFIG[pcre16] = "--enable-pcre16,--disable-pcre16"
 PACKAGECONFIG[pcre32] = "--enable-pcre32,--disable-pcre32"
 PACKAGECONFIG[pcretest-readline] = "--enable-pcretest-libreadline,--disable-pcretest-libreadline,readline,"
 PACKAGECONFIG[unicode-properties] = "--enable-unicode-properties,--disable-unicode-properties"
+PACKAGECONFIG[jit] = "--enable-jit=auto,--disable-jit"
 
 BINCONFIG = "${bindir}/pcre-config"
 
-- 
2.11.0