libpayload: Make lpgcc wrapper usable for in-tree builds

Teach lpgcc to look in the in-coreboot tree directory structure, too.

Change-Id: I3809456d072ce2f91542b0edb3fd39f536298cc2
Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Reviewed-on: http://review.coreboot.org/3530
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

payloads/libpayload/bin/lp.functions

@@ -49,11 +49,13 @@ fi
 
 if [ -f $BASE/../lib/libpayload.a ]; then
 	_LIBDIR=$BASE/../lib
+elif [ -f $BASE/../build/libpayload.a ]; then
+	_LIBDIR=$BASE/../build
 else
 	_LIBDIR=$LIBPAYLOAD_PREFIX/lib
 fi
 
-if [ -d $BASE/../include/ ]; then
+if [ -d $BASE/../include ]; then
 	_INCDIR=$BASE/../include
 else
 	_INCDIR=$LIBPAYLOAD_PREFIX/include

payloads/libpayload/bin/lpgcc

@@ -59,9 +59,42 @@ BASE=`dirname $0`
 . $BASE/lp.functions
 
 # include libpayload config
-. $BASE/../libpayload.config
+if [ -f $BASE/../libpayload.config ]; then
+	. $BASE/../libpayload.config
+elif [ -f $BASE/../.config ]; then
+	. $BASE/../.config
+else
+	echo "Can't find config"
+	exit 1
+fi
 
-_LDSCRIPT="-Wl,-T,$_LIBDIR/libpayload.ldscript"
+if [ "$CONFIG_ARCH_ARMV7" = "y" ]; then
+  _ARCHINCDIR=$_INCDIR/armv7
+  _ARCHLIBDIR=$_LIBDIR/armv7
+  _ARCHEXTRA=""
+  _ARCH=armv7
+fi
+
+if [ "$CONFIG_ARCH_POWERPC" = "y" ]; then
+  _ARCHINCDIR=$_INCDIR/powerpc
+  _ARCHLIBDIR=$_LIBDIR/powerpc
+  _ARCHEXTRA=""
+  _ARCH=powerpc
+fi
+
+if [ "$CONFIG_ARCH_X86" = "y" ]; then
+  _ARCHINCDIR=$_INCDIR/x86
+  _ARCHLIBDIR=$_LIBDIR/x86
+  _ARCHEXTRA="-m32 "
+  _ARCH=x86
+fi
+
+if [ -f $_LIBDIR/libpayload.ldscript ]; then
+	_LDDIR=$_LIBDIR
+elif [ -f $BASE/../arch/$_ARCH/libpayload.ldscript ]; then
+	_LDDIR=$BASE/../arch/$_ARCH
+fi
+_LDSCRIPT="-Wl,-T,$_LDDIR/libpayload.ldscript"
 
 trygccoption() {
 	$DEFAULT_CC $1 -S -xc /dev/null -o /dev/null &> /dev/null
@@ -107,25 +140,7 @@ while [ $# -gt 0 ]; do
 	shift
 done
 
-if [ "$CONFIG_ARCH_ARMV7" = "y" ]; then
-  _ARCHINCDIR=$_INCDIR/armv7
-  _ARCHLIBDIR=$_LIBDIR/armv7
-  _ARCHEXTRA=""
-fi
-
-if [ "$CONFIG_ARCH_POWERPC" = "y" ]; then
-  _ARCHINCDIR=$_INCDIR/powerpc
-  _ARCHLIBDIR=$_LIBDIR/powerpc
-  _ARCHEXTRA=""
-fi
-
-if [ "$CONFIG_ARCH_X86" = "y" ]; then
-  _ARCHINCDIR=$_INCDIR/x86
-  _ARCHLIBDIR=$_LIBDIR/x86
-  _ARCHEXTRA="-m32 "
-fi
-
-_CFLAGS="$_ARCHEXTRA -nostdinc -nostdlib -I$_INCDIR -I$_ARCHINCDIR -D__LIBPAYLOAD__=1"
+_CFLAGS="$_ARCHEXTRA -nostdinc -nostdlib -I$BASE/../build -I$_INCDIR -I$_ARCHINCDIR -D__LIBPAYLOAD__=1"
 
 # Check for the -fno-stack-protector silliness
 
@@ -134,7 +149,7 @@ trygccoption -fno-stack-protector
 
 _CFLAGS="$_CFLAGS -I`$DEFAULT_CC $_ARCHEXTRA -print-search-dirs | head -n 1 | cut -d' ' -f2`include"
 
-_LDFLAGS="-L$BASE/../lib $_LDSCRIPT -static"
+_LDFLAGS="-L$BASE/../lib -L$_LIBDIR $_LDSCRIPT -static"
 
 if [ $DOLINK -eq 0 ]; then
     if [ $DEBUGME -eq 1 ]; then
@@ -144,8 +159,16 @@ if [ $DOLINK -eq 0 ]; then
     $DEFAULT_CC $_CFLAGS $CMDLINE
 else
     _LIBGCC=`$DEFAULT_CC $_ARCHEXTRA -print-libgcc-file-name`
+    if [ -f $_ARCHLIBDIR/head.o ]; then
+	    HEAD_O=$_ARCHLIBDIR/head.o
+    elif [ -f $BASE/../build/head.o ]; then
+	    HEAD_O=$BASE/../build/head.o
+    else
+	    echo "Could not find head.o"
+	    exit 1
+    fi
     if [ $DEBUGME -eq 1 ]; then
-	echo "$DEFAULT_CC $_CFLAGS $_LDFLAGS $_ARCHLIBDIR/head.o $CMDLINE -lpayload $_LIBGCC"
+	echo "$DEFAULT_CC $_CFLAGS $_LDFLAGS $HEAD_O $CMDLINE -lpayload $_LIBGCC"
     fi
 
     # Note: $_ARCHLIBDIR/head.o must be the first object being linked, because it
@@ -153,5 +176,5 @@ else
     # header to be placed below 0x2000 in the resulting image.  See:
     # http://www.gnu.org/software/grub/manual/multiboot/html_node/OS-image-format.html
 
-    $DEFAULT_CC $_CFLAGS $_LDFLAGS $_ARCHLIBDIR/head.o  $CMDLINE -lpayload $_LIBGCC
+    $DEFAULT_CC $_CFLAGS $_LDFLAGS $HEAD_O  $CMDLINE -lpayload $_LIBGCC
 fi