configure: Check for presence of pkg-config and ccache binaries

Check whether pkg-config and ccache are in the PATH. A missing
pkg-config will cause the configure script to abort with an error. The
presence of ccache is written to Config and used by the Makefile to
conditionally make use of it.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

2 files changed, 35 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index ee03d86..9ad9db5 100644
--- a/Makefile
+++ b/Makefile
@@ -16,7 +16,7 @@ TOOLS ?= netsniff-ng trafgen astraceroute flowtop ifpps bpfc curvetun mausezahn
 PREFIX ?=
 
 # Disable if you don't want it
-CCACHE ?= ccache
+CCACHE ?= $(CONFIG_CCACHE)
 
 # Location of installation paths.
 SBINDIR = $(PREFIX)/usr/sbin
diff --git a/configure b/configure
index ed1eacd..fd8211e 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,7 @@
 #!/bin/bash
 # This isn't a configure generated by autoconf!
 
+MISSING_PKG_CONFIG=0
 MISSING_DEFS=0
 MISSING_NACL=0
 
@@ -9,6 +10,31 @@ MISSING_NACL=0
 TMPDIR=$(mktemp -d config.XXXXXX)
 trap 'status=$?; rm -rf $TMPDIR; exit $status' EXIT HUP INT QUIT TERM
 
+check_pkg_config()
+{
+	echo -n "[*] Checking pkg-config ... "
+
+	if [ "x$(which pkg-config)" == "x" ] ; then
+		echo "[NO]"
+		MISSING_PKG_CONFIG=1
+	else
+		echo "[YES]"
+	fi
+}
+
+check_ccache()
+{
+	echo -n "[*] Checking ccache ... "
+
+	if [ "x$(which ccache)" == "x" ] ; then
+		echo "[NO]"
+		echo "CONFIG_CCACHE=" >> Config
+	else
+		echo "[YES]"
+		echo "CONFIG_CCACHE=ccache" >> Config
+	fi
+}
+
 check_nacl()
 {
 	echo -n "[*] Checking nacl ... "
@@ -172,6 +198,14 @@ EOF
 
 }
 echo "# This file is autogenerated by the configure script" > Config
+check_pkg_config
+
+if [ "$MISSING_PKG_CONFIG" == "1" ] ; then
+	echo "[!] pkg-config is not installed on your system or not in the PATH"
+	exit 1
+fi
+
+check_ccache
 check_nacl
 check_libnl
 check_tpacket