libmpack: add missing makedep

mingw-w64-libmpack/PKGBUILD

@@ -5,12 +5,18 @@ pkgbase=mingw-w64-${_realname}
 pkgname=("${MINGW_PACKAGE_PREFIX}-${_realname}")
 pkgdesc="Simple implementation of msgpack in C (mingw-w64)"
 pkgver=1.0.5
-pkgrel=3
+pkgrel=4
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clangarm64' 'clang32')
 url='https://github.com/libmpack/libmpack'
-license=('MIT')
-makedepends=("${MINGW_PACKAGE_PREFIX}-cc" "make")
+license=('spdx:MIT')
+makedepends=(
+  "${MINGW_PACKAGE_PREFIX}-cc"
+  "make"
+  "libtool"
+  $([[ ${MINGW_PACKAGE_PREFIX} != *-clang-* ]] || \
+    echo "${MINGW_PACKAGE_PREFIX}-gcc-compat")
+)
 source=("${_realname}-${pkgver}.tar.gz"::"https://github.com/libmpack/libmpack/archive/${pkgver}.tar.gz"
         01-make.patch)
 sha256sums=('4ce91395d81ccea97d3ad4cb962f8540d166e59d3e2ddce8a22979b49f108956'