build bc on systems where it is not (pre-)installed

README.md

@@ -54,7 +54,7 @@ See below in how to use libc++ as the standard library.
 
 If you want to build GCC as well, then you can do this by running `./build_gcc.sh`.  
 But before you do this, make sure you have got the GCC build depedencies installed on your system,  
-on debian like systems you can run `apt-get install mpc-dev mpfr-dev gmp-dev` to install them.
+on debian like systems you can run `apt-get install libmpc-dev libmpfr-dev libgmp-dev` to install them.
 
 ### SDK DOWNLOAD LINKS: ###
 
@@ -125,6 +125,7 @@ You can use the shortcut `o32-...` or `i386-apple-darwin...` what ever you like
   * bash scripts: GPLv2
   * cctools: APSL 2.0
   * xar: New BSD
+  * bc: GPLv3
 
 
 ### CREDITS: ####

build.sh

@@ -98,9 +98,9 @@ if [ ! -f "have_cctools_${CCTOOLS_REVHASH}_$TARGET" ]; then
 
 rm -rf cctools*
 rm -rf xar*
+rm -rf bc*
 
 tar xJfv $TARBALL_DIR/cctools*.tar.xz
-tar xzfv $TARBALL_DIR/xar*.tar.gz
 
 pushd cctools*/cctools &>/dev/null
 patch -p0 < $PATCH_DIR/cctools-ld64-1.patch
@@ -127,9 +127,31 @@ popd &>/dev/null
 
 fi # have cctools
 
+
+set +e
+which bc &>/dev/null
+NEED_BC=$?
+set -e
+
+
+if [ $NEED_BC -ne 0 ]; then
+
+tar xfv $TARBALL_DIR/bc*.tar.bz2
+
+pushd bc* &>/dev/null
+CFLAGS="-w" ./configure --prefix=$TARGET_DIR --without-flex
+make -j$JOBS
+make install -j$JOBS
+popd &>/dev/null
+
+fi # NEED BC
+
+
 if [ ! -f "have_xar_$TARGET" ]; then
 if [ -n "$FORCE_XAR_BUILD" ] || [ `echo "$SDK_VERSION<=10.5" | bc -l` -eq 1 ]; then
 
+tar xzfv $TARBALL_DIR/xar*.tar.gz
+
 pushd xar* &>/dev/null
 set +e
 sed -i 's/-Wall/-w/g' configure