contrib: fix compilation of libraries for iOS which deploy cmake

contrib/bootstrap

@@ -151,6 +151,24 @@ add_make_enabled()
 	done
 }
 
+check_ios_sdk()
+{
+   if test -z "$SDKROOT"
+   then
+      SDKROOT=`xcode-select -print-path`/Platforms/iPhone${PLATFORM}.platform/Developer/SDKs/iPhone${PLATFORM}${SDK_VERSION}.sdk
+      echo "SDKROOT not specified, assuming $SDKROOT"
+   else
+      SDKROOT="$SDKROOT"
+      fi
+
+   if [ ! -d "${SDKROOT}" ]
+   then
+      echo "*** ${SDKROOT} does not exist, please install required SDK, or set SDKROOT manually. ***"
+      exit 1
+   fi
+   add_make "IOS_SDK=${SDKROOT}"
+}
+
 check_macosx_sdk()
 {
    [ -z "${OSX_VERSION}" ] && echo "OSX_VERSION not specified, assuming 10.7" && OSX_VERSION=10.7
@@ -206,6 +224,7 @@ case "${OS}" in
 			check_macosx_sdk
 			add_make_enabled "HAVE_MACOSX" "HAVE_DARWIN_OS" "HAVE_BSD"
 		else
+			check_ios_sdk
 			add_make_enabled "HAVE_IOS" "HAVE_DARWIN_OS" "HAVE_BSD" "HAVE_NEON" "HAVE_ARMV7A"
 		fi
 		;;

contrib/src/main.mak

@@ -397,6 +397,9 @@ ifdef HAVE_DARWIN_OS
 	echo "set(CMAKE_LD_FLAGS $(LDFLAGS))" >> $@
 ifdef HAVE_IOS
 	echo "set(CMAKE_AR ar CACHE FILEPATH "Archiver")" >> $@
+	echo "set(CMAKE_OSX_SYSROOT $(IOS_SDK))" >> $@
+else
+	echo "set(CMAKE_OSX_SYSROOT $(MACOSX_SDK))" >> $@
 endif
 endif
 ifdef HAVE_CROSS_COMPILE

extras/package/ios/build.sh

@@ -136,6 +136,8 @@ export CXX="xcrun clang++"
 export LD="xcrun ld"
 export STRIP="xcrun strip"
 
+export PLATFORM=$PLATFORM
+export SDK_VERSION=$SDK_VERSION
 
 CFLAGS="-isysroot ${SDKROOT} -arch ${ARCH} -miphoneos-version-min=${SDK_MIN} ${OPTIM}"
 if [ "$ARCH" = "armv7" -o "$ARCH" = "armv7s" ]; then