gzip: unbreak musl builds.

srcpkgs/gzip/template

@@ -1,9 +1,10 @@
 # Template file for 'gzip'
 pkgname=gzip
 version=1.6
-revision=3
+revision=4
 bootstrap=yes
 build_style=gnu-configure
+configure_args="gl_cv_func_fprintf_posix=yes gl_cv_func_fflush_stdin=yes"
 conflicts="chroot-gzip>=0"
 short_desc="GNU compression utility (replacement for compress)"
 maintainer="Juan RP <xtraeme@gmail.com>"
@@ -11,3 +12,13 @@ homepage="http://www.gnu.org/software/gzip/"
 license="GPL-3"
 distfiles="http://ftp.gnu.org/gnu/gzip/$pkgname-$version.tar.gz"
 checksum=97eb83b763d9e5ad35f351fe5517e6b71521d7aac7acf3e3cacdb6b1496d8f7e
+
+pre_configure() {
+	case "$XBPS_TARGET_MACHINE" in
+	*-musl)
+		# Special case for musl libc; "fix" issues with gnulib.
+		: > lib/fseeko.c
+		echo "void close_stdin(void) {}" > lib/closein.c
+		;;
+	esac
+}