2 files changed, 195 insertions, 0 deletions
diff --git a/support/dependencies/dependencies.mk b/support/dependencies/dependencies.mk
new file mode 100644
index 000000000..3e621e9dd
--- /dev/null
+++ b/support/dependencies/dependencies.mk
@@ -0,0 +1,35 @@
+######################################################################
+#
+# Check buildroot dependencies and bail out if the user's
+# system is judged to be lacking....
+#
+######################################################################
+
+DEPENDENCIES_HOST_PREREQ:=
+ifeq ($(BR2_STRIP_sstrip),y)
+DEPENDENCIES_HOST_PREREQ+=host-sstrip
+endif
+
+core-dependencies:
+	@HOSTCC="$(firstword $(HOSTCC))" MAKE="$(MAKE)" \
+		CONFIG_FILE="$(CONFIG_DIR)/.config" \
+		DL_TOOLS="$(sort $(DL_TOOLS_DEPENDENCIES))" \
+		$(TOPDIR)/support/dependencies/dependencies.sh
+
+dependencies: core-dependencies $(DEPENDENCIES_HOST_PREREQ)
+
+dependencies-source:
+
+dependencies-clean:
+	rm -f $(SSTRIP_TARGET)
+
+dependencies-dirclean:
+	true
+
+#############################################################
+#
+# Toplevel Makefile options
+#
+#############################################################
+.PHONY: dependencies core-dependencies
+
diff --git a/support/dependencies/dependencies.sh b/support/dependencies/dependencies.sh
new file mode 100755
index 000000000..c47ffcf43
--- /dev/null
+++ b/support/dependencies/dependencies.sh
@@ -0,0 +1,160 @@
+#!/bin/sh
+# vi: set sw=4 ts=4:
+#set -x
+
+export LC_ALL=C
+
+# Verify that grep works
+echo "WORKS" | grep "WORKS" >/dev/null 2>&1
+if test $? != 0 ; then
+	/bin/echo -e "\ngrep doesn't work\n"
+	exit 1
+fi
+
+# sanity check for CWD in LD_LIBRARY_PATH
+# try not to rely on egrep..
+if test -n "$LD_LIBRARY_PATH" ; then
+	/bin/echo TRiGGER_start"$LD_LIBRARY_PATH"TRiGGER_end | /bin/grep ':\.:' >/dev/null 2>&1 ||
+	/bin/echo TRiGGER_start"$LD_LIBRARY_PATH"TRiGGER_end | /bin/grep 'TRiGGER_start\.:' >/dev/null 2>&1 ||
+	/bin/echo TRiGGER_start"$LD_LIBRARY_PATH"TRiGGER_end | /bin/grep ':\.TRiGGER_end' >/dev/null 2>&1 ||
+	/bin/echo TRiGGER_start"$LD_LIBRARY_PATH"TRiGGER_end | /bin/grep 'TRiGGER_start\.TRiGGER_end' >/dev/null 2>&1
+	if test $? = 0; then
+		/bin/echo -e "\nYou seem to have the current working directory in your"
+		/bin/echo -e "LD_LIBRARY_PATH environment variable. This doesn't work.\n"
+		exit 1;
+	fi
+fi;
+
+# sanity check for CWD in PATH. Having the current working directory
+# in the PATH makes the toolchain build process break.
+# try not to rely on egrep..
+if test -n "$PATH" ; then
+	/bin/echo TRiGGER_start"$PATH"TRiGGER_end | /bin/grep ':\.:' >/dev/null 2>&1 ||
+	/bin/echo TRiGGER_start"$PATH"TRiGGER_end | /bin/grep 'TRiGGER_start\.:' >/dev/null 2>&1 ||
+	/bin/echo TRiGGER_start"$PATH"TRiGGER_end | /bin/grep ':\.TRiGGER_end' >/dev/null 2>&1 ||
+	/bin/echo TRiGGER_start"$PATH"TRiGGER_end | /bin/grep 'TRiGGER_start\.TRiGGER_end' >/dev/null 2>&1
+	if test $? = 0; then
+		/bin/echo -e "\nYou seem to have the current working directory in your"
+		/bin/echo -e "PATH environment variable. This doesn't work.\n"
+		exit 1;
+	fi
+fi;
+
+if test -n "$PERL_MM_OPT" ; then
+    /bin/echo -e "\nYou have PERL_MM_OPT defined because Perl local::lib"
+    /bin/echo -e "is installed on your system. Please unset this variable"
+    /bin/echo -e "before starting Buildroot, otherwise the compilation of"
+    /bin/echo -e "Perl related packages will fail"
+    exit 1
+fi
+
+# Verify that which is installed
+if ! which which > /dev/null ; then
+	/bin/echo -e "\nYou must install 'which' on your build machine\n";
+	exit 1;
+fi;
+
+if ! which sed > /dev/null ; then
+	/bin/echo -e "\nYou must install 'sed' on your build machine\n"
+	exit 1
+fi
+
+# Check make
+MAKE=$(which make 2> /dev/null)
+if [ -z "$MAKE" ] ; then
+	/bin/echo -e "\nYou must install 'make' on your build machine\n";
+	exit 1;
+fi;
+MAKE_VERSION=$($MAKE --version 2>&1 | sed -e 's/^.* \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q')
+if [ -z "$MAKE_VERSION" ] ; then
+	/bin/echo -e "\nYou must install 'make' on your build machine\n";
+	exit 1;
+fi;
+MAKE_MAJOR=$(echo $MAKE_VERSION | sed -e "s/\..*//g")
+MAKE_MINOR=$(echo $MAKE_VERSION | sed -e "s/^$MAKE_MAJOR\.//g" -e "s/\..*//g" -e "s/[a-zA-Z].*//g")
+if [ $MAKE_MAJOR -lt 3 ] || [ $MAKE_MAJOR -eq 3 -a $MAKE_MINOR -lt 81 ] ; then
+	/bin/echo -e "\nYou have make '$MAKE_VERSION' installed.  GNU make >=3.81 is required\n"
+	exit 1;
+fi;
+
+# Check host gcc
+COMPILER=$(which $HOSTCC_NOCCACHE 2> /dev/null)
+if [ -z "$COMPILER" ] ; then
+	COMPILER=$(which cc 2> /dev/null)
+fi;
+if [ -z "$COMPILER" ] ; then
+	/bin/echo -e "\nYou must install 'gcc' on your build machine\n";
+	exit 1;
+fi;
+
+COMPILER_VERSION=$($COMPILER -v 2>&1 | sed -n '/^gcc version/p' |
+	sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q')
+if [ -z "$COMPILER_VERSION" ] ; then
+	/bin/echo -e "\nYou must install 'gcc' on your build machine\n";
+	exit 1;
+fi;
+COMPILER_MAJOR=$(echo $COMPILER_VERSION | sed -e "s/\..*//g")
+COMPILER_MINOR=$(echo $COMPILER_VERSION | sed -e "s/^$COMPILER_MAJOR\.//g" -e "s/\..*//g")
+if [ $COMPILER_MAJOR -lt 3 -o $COMPILER_MAJOR -eq 2 -a $COMPILER_MINOR -lt 95 ] ; then
+	echo "\nYou have gcc '$COMPILER_VERSION' installed.  gcc >= 2.95 is required\n"
+	exit 1;
+fi;
+
+# check for host CXX
+CXXCOMPILER=$(which $HOSTCXX_NOCCACHE 2> /dev/null)
+if [ -z "$CXXCOMPILER" ] ; then
+	CXXCOMPILER=$(which c++ 2> /dev/null)
+fi
+if [ -z "$CXXCOMPILER" ] ; then
+	/bin/echo -e "\nYou may have to install 'g++' on your build machine\n"
+	#exit 1
+fi
+if [ ! -z "$CXXCOMPILER" ] ; then
+	CXXCOMPILER_VERSION=$($CXXCOMPILER -v 2>&1 | sed -n '/^gcc version/p' |
+		sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q')
+	if [ -z "$CXXCOMPILER_VERSION" ] ; then
+		/bin/echo -e "\nYou may have to install 'g++' on your build machine\n"
+	fi
+
+	CXXCOMPILER_MAJOR=$(echo $CXXCOMPILER_VERSION | sed -e "s/\..*//g")
+	CXXCOMPILER_MINOR=$(echo $CXXCOMPILER_VERSION | sed -e "s/^$CXXCOMPILER_MAJOR\.//g" -e "s/\..*//g")
+	if [ $CXXCOMPILER_MAJOR -lt 3 -o $CXXCOMPILER_MAJOR -eq 2 -a $CXXCOMPILER_MINOR -lt 95 ] ; then
+		/bin/echo -e "\nYou have g++ '$CXXCOMPILER_VERSION' installed.  g++ >= 2.95 is required\n"
+		exit 1
+	fi
+fi
+
+# Check bash
+if ! $SHELL --version 2>&1 | grep -q '^GNU bash'; then
+	/bin/echo -e "\nYou must install 'bash' on your build machine\n";
+	exit 1;
+fi;
+
+# Check that a few mandatory programs are installed
+for prog in awk bison flex msgfmt makeinfo patch gzip bzip2 perl tar wget cpio python unzip rsync ${DL_TOOLS} ; do
+    if ! which $prog > /dev/null ; then
+	/bin/echo -e "\nYou must install '$prog' on your build machine";
+	if test $prog = "makeinfo" ; then
+	    /bin/echo -e "makeinfo is usually part of the texinfo package in your distribution\n"
+	elif test $prog = "msgfmt" ; then
+	    /bin/echo -e "msgfmt is usually part of the gettext package in your distribution\n"
+	elif test $prog = "svn" ; then
+	    /bin/echo -e "svn is usually part of the subversion package in your distribution\n"
+	else
+	    /bin/echo -e "\n"
+	fi
+	exit 1;
+    fi
+done
+
+if grep ^BR2_TOOLCHAIN_BUILDROOT=y $CONFIG_FILE > /dev/null && \
+   grep ^BR2_ENABLE_LOCALE=y       $CONFIG_FILE > /dev/null ; then
+   if ! which locale > /dev/null ; then
+       /bin/echo -e "\nYou need locale support on your build machine to build a toolchain supporting locales\n"
+       exit 1 ;
+   fi
+   if ! locale -a | grep -i utf8$ ; then
+       /bin/echo -e "\nYou need at least one UTF8 locale to build a toolchain supporting locales\n"
+       exit 1 ;
+   fi
+fi