GNU=https://ftpmirror.gnu.org/gnu
APACHE=https://downloads.apache.org/
SF=https://downloads.sourceforge.net/project
VIDEOLAN=https://downloads.videolan.org/pub/contrib

YASM_VERSION=1.3.0
YASM_URL=http://www.tortall.net/projects/yasm/releases/yasm-$(YASM_VERSION).tar.gz

NASM_VERSION=2.14
NASM_URL=https://www.nasm.us/pub/nasm/releasebuilds/$(NASM_VERSION)/nasm-$(NASM_VERSION).tar.gz

CMAKE_VERSION=3.17.0
CMAKE_URL=https://www.cmake.org/files/v3.17/cmake-$(CMAKE_VERSION).tar.gz

LIBTOOL_VERSION=2.4.7
LIBTOOL_URL=$(GNU)/libtool/libtool-$(LIBTOOL_VERSION).tar.gz

AUTOCONF_VERSION=2.71
AUTOCONF_URL=$(GNU)/autoconf/autoconf-$(AUTOCONF_VERSION).tar.gz

AUTOMAKE_VERSION=1.16.5
AUTOMAKE_URL=$(GNU)/automake/automake-$(AUTOMAKE_VERSION).tar.gz

M4_VERSION=1.4.19
M4_URL=$(GNU)/m4/m4-$(M4_VERSION).tar.gz

PKGCFG_VERSION=0.28-1
PKGCFG_URL=$(SF)/pkgconfiglite/$(PKGCFG_VERSION)/pkg-config-lite-$(PKGCFG_VERSION).tar.gz

TAR_VERSION=1.26
TAR_URL=$(GNU)/tar/tar-$(TAR_VERSION).tar.bz2

XZ_VERSION=5.2.2
XZ_URL=https://tukaani.org/xz/xz-$(XZ_VERSION).tar.bz2

GAS_VERSION=72887b9
GAS_URL=http://git.libav.org/?p=gas-preprocessor.git;a=snapshot;h=$(GAS_VERSION);sf=tgz

SED_VERSION=4.2.2
SED_URL=$(GNU)/sed/sed-$(SED_VERSION).tar.bz2

ANT_VERSION=1.9.7
ANT_URL=$(APACHE)/ant/binaries/apache-ant-$(ANT_VERSION)-bin.tar.bz2

PROTOBUF_VERSION := 3.1.0
PROTOBUF_URL := https://github.com/google/protobuf/releases/download/v$(PROTOBUF_VERSION)/protobuf-cpp-$(PROTOBUF_VERSION).tar.gz

BISON_VERSION=3.8.2
BISON_URL=$(GNU)/bison/bison-$(BISON_VERSION).tar.xz

FLEX_VERSION=2.6.4
FLEX_URL=https://github.com/westes/flex/releases/download/v$(FLEX_VERSION)/flex-$(FLEX_VERSION).tar.gz

GETTEXT_VERSION=0.22
GETTEXT_URL=$(GNU)/gettext/gettext-$(GETTEXT_VERSION).tar.gz

HELP2MAN_VERSION=1.47.6
HELP2MAN_URL=$(GNU)/help2man/help2man-$(HELP2MAN_VERSION).tar.xz

MESON_VERSION=0.63.0
MESON_URL=https://github.com/mesonbuild/meson/releases/download/$(MESON_VERSION)/meson-$(MESON_VERSION).tar.gz

NINJA_VERSION=1.11.1
NINJA_BUILD_NAME=$(NINJA_VERSION).g95dee.kitware.jobserver-1
NINJA_URL=https://github.com/Kitware/ninja/archive/refs/tags/v$(NINJA_BUILD_NAME).tar.gz