[meta-mingw][master/sumo][PATCH] swig: Add swig environment setup for SDK

[Joshua Watt <jpewhacker@gmail.com>]

Configures the mingw SDK environment to set the SWIG_LIB environment
variable so that swig can find its core library. Otherwise, swig will
look for a directory called "Lib" next to the executable.

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
---
 recipes-devtools/swig/swig_%.bbappend | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 recipes-devtools/swig/swig_%.bbappend

diff --git a/recipes-devtools/swig/swig_%.bbappend b/recipes-devtools/swig/swig_%.bbappend
new file mode 100644
index 0000000..de40609
--- /dev/null
+++ b/recipes-devtools/swig/swig_%.bbappend
@@ -0,0 +1,12 @@
+# A wrapper script won't work to set SWIG_LIB for a mingw SDK. Instead, add an
+# environment setup batch file to set SWIG_LIB when the SDK is configured.
+do_install_append_class-nativesdk_mingw32() {
+    install -d ${D}${SDKPATHNATIVE}/environment-setup.d
+
+    cat <<HEREDOC > ${D}${SDKPATHNATIVE}/environment-setup.d/swig.bat
+set SWIG_LIB=%OECORE_NATIVE_SYSROOT%\\usr\\share\\${BPN}\\${PV}
+HEREDOC
+}
+
+FILES_${PN}_append_class-nativesdk_mingw32 = " ${SDKPATHNATIVE}/environment-setup.d"
+
-- 
2.17.1