Separate out configuration function, configure in pkgver()

PKGBUILD

@@ -8,7 +8,7 @@ pkgver=1.2.1
 _seafilever=2.1.1
 
 #The release number for the arch package, as fixes are added to the PKGBUILD, the release number will increase
-pkgrel=1
+pkgrel=2
 
 # The description of the package, should be about 80 characters long (one line)
 pkgdesc="A simple and easy-to-use C language RPC framework (including both server side & client side) based on GObject System."
@@ -42,8 +42,14 @@ source=("https://github.com/haiwen/libsearpc/archive/v${_seafilever}.tar.gz"
 sha256sums=('c0e7cc812c642ebb1339c3701570e78ff5b8c8aa2a521e5a505e28d9666e89ec'
 	'aec39a303aaebc0777a22d8c53367f52f619654d63f62b362d75c1c599e632f4')
 
+configure_libsearpc() {
+	./autogen.sh
+	./configure --prefix=/usr PYTHON=/usr/bin/python2
+}
+
 pkgver() {
 	cd "$srcdir/$pkgname-$_seafilever"
+	configure_libsearpc &> /dev/null
 	grep "PACKAGE_VERSION" Makefile | sed 's/PACKAGE_VERSION.*=[ \t]\+\([0-9\.]\+\)[ \t]*/\1/g'
 }
 
@@ -55,8 +61,7 @@ prepare () {
 
 build () {
 	cd "$srcdir/$pkgname-$_seafilever"
-	./autogen.sh
-	./configure --prefix=/usr PYTHON=/usr/bin/python2
+	configure_libsearpc
 	make -j1
 }