update to 12.4-systemd: lfs/m4-1.4.20

lfs/m4-1.4.20.PKGBUILD

@@ -0,0 +1,26 @@
+pkgname=m4
+pkgver=1.4.20
+pkgdesc="The GNU macro processor"
+homepage="https://www.gnu.org/software/m4"
+license=('GPL3')
+sources=("${pkgname}-${pkgver}.tar.xz")
+urls=("https://ftp.gnu.org/gnu/m4/${sources[0]}")
+md5sums=("6eb2ebed5b24e74b6e890919331d2132")
+
+
+src_prepare() {
+  tar -xf ${distdir}/${sources[0]} --strip-components=1
+}
+
+src_build() {
+  ./configure --prefix=/usr
+  make
+}
+
+src_check() {
+  make check
+}
+
+src_install() {
+  make prefix="${pkgdir}"/usr install
+}