Rework the env - variables to produce a working cross compile script

The cross compile script kind of works right now, it's missing
something that I'm really not sure where or what it is.

currently sqlite will not build because:
	error: gethostuuid is not defined in iOS

This bug was already opened on sqlite bugtracker for about a year, the
workaround is to pass -DDSQLITE_ENABLE_LOCKING_STYLE=0 to the compilation
flags, which I did but did not work for some reason.

Which is a good error - it shows us that we are actually trying to compile
for iOS.

Signed-off-by: Tomaz Canabrava <tomaz.canabrava@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

packaging/ios/build.sh

@@ -1,13 +1,36 @@
 #!/bin/bash
 set -e
 
-PLATFORMPATH="/Applications/Xcode.app/Contents/Developer/Platforms"
+# Build architecture,  [armv7|armv7s|arm64|i386|x86_64]
-TOOLSPATH="/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin"
+export ARCH=i386
-export IPHONEOS_DEPLOYMENT_TARGET="8.0"
+
-pwd=`pwd`
+#arm-apple-darwin, arch64-apple-darwin, i386-apple-darwin*, x86_64-apple-darwin*
+export CHOST=i386-apple-darwin*
+
+#iphonesimulator or iphoneos
+export SDK=iphonesimulator
+
+export SDKVERSION=$(xcrun --sdk $SDK --show-sdk-version) # current version
+export SDKROOT=$(xcrun --sdk $SDK --show-sdk-path) # current version
+
+#make subsurface set this to a saner value
+export PREFIX=/usr
+
+# Binaries
+export CC=$(xcrun --sdk $SDK --find gcc)
+export CPP=$(xcrun --sdk $SDK --find gcc)" -E"
+export CXX=$(xcrun --sdk $SDK --find g++)
+export LD=$(xcrun --sdk $SDK --find ld)
+
+# Flags
+export CFLAGS="$CFLAGS -arch $ARCH -isysroot $SDKROOT -I$PREFIX/include -miphoneos-version-min=$SDKVERSION"
+export CPPFLAGS="$CPPFLAGS -arch $ARCH -isysroot $SDKROOT -I$PREFIX/include -miphoneos-version-min=$SDKVERSION"
+export CXXFLAGS="$CXXFLAGS -arch $ARCH -isysroot $SDKROOT -I$PREFIX/include"
+export LDFLAGS="$LDFLAGS -arch $ARCH -isysroot $SDKROOT -L$PREFIX/lib"
+export PKG_CONFIG_PATH="$PKG_CONFIG_PATH":"$SDKROOT/usr/lib/pkgconfig":"$PREFIX/lib/pkgconfig"
 
 # Which versions are we building against?
-SQLITE_VERSION=3081002
+SQLITE_VERSION=3090200
 LIBXML2_VERSION=2.9.3
 LIBXSLT_VERSION=1.1.28
 LIBZIP_VERSION=1.0.1
@@ -22,17 +45,6 @@ target=i386
 hosttarget=i386
 platform=iPhoneSimulator
 
-export CC="$(xcrun -sdk iphoneos -find clang)"
-export CPP="$CC -E"
-export CFLAGS="-arch ${target} -isysroot $PLATFORMPATH/$platform.platform/Developer/SDKs/$platform$SDKVERSION.sdk -miphoneos-version-min=$SDKVERSION"
-export AR=$(xcrun -sdk iphoneos -find ar)
-export RANLIB=$(xcrun -sdk iphoneos -find ranlib)
-export CPPFLAGS="-arch ${target}  -isysroot $PLATFORMPATH/$platform.platform/Developer/SDKs/$platform$SDKVERSION.sdk -miphoneos-version-min=$SDKVERSION"
-export LDFLAGS="-arch ${target} -isysroot $PLATFORMPATH/$platform.platform/Developer/SDKs/$platform$SDKVERSION.sdk"
-
-echo "BUILDCHAIN: ${BUILDCHAIN}"
-echo "ARCH: ${ARCH}"
-echo "PREFIX:${PREFIX}"
 
 if [ ! -e sqlite-autoconf-${SQLITE_VERSION}.tar.gz ] ; then
 	curl -O http://www.sqlite.org/2015/sqlite-autoconf-${SQLITE_VERSION}.tar.gz
@@ -43,8 +55,11 @@ fi
 if [ ! -e $PKG_CONFIG_LIBDIR/sqlite3.pc ] ; then
 	mkdir -p sqlite-build-$platform
 	pushd sqlite-build-$platform
+    CFLAGS="${CFLAGS} -DDSQLITE_ENABLE_LOCKING_STYLE=0"
+
 	../sqlite-autoconf-${SQLITE_VERSION}/configure \
-        --host=$hosttarget-apple-darwin
+        --prefix="$PREFIX" \
+        --host="$CHOST" \
         --enable-static \
         --disable-shared
 	make