Add build system for Unix

.gitignore

@@ -11,3 +11,26 @@ Resize/Release/
 x64/
 Debug/
 Release/
+*.o
+*.la
+*.lo
+*.so
+*.dll
+.libs
+.deps/
+.dirstamp
+Makefile
+Makefile.in
+aclocal.m4
+autom4te.cache
+compile
+config.guess
+config.log
+config.status
+config.sub
+configure
+depcomp
+install-sh
+libtool
+ltmain.sh
+missing

Makefile.am

@@ -0,0 +1,68 @@
+commonflags = -O2 -Wall -Wextra -Wno-unused-parameter
+AM_CXXFLAGS = -std=c++11 $(commonflags)
+AM_CFLAGS = $(commonflags)
+
+lib_LTLIBRARIES = libzimg.la
+
+pkglib_LTLIBRARIES = vszimg.la
+
+libzimg_la_SOURCES = API/zimg.cpp \
+					 Colorspace/colorspace.cpp \
+					 Colorspace/colorspace_param.cpp \
+					 Colorspace/graph.cpp \
+					 Colorspace/matrix3.cpp \
+					 Colorspace/operation.cpp \
+					 Colorspace/operation_impl.cpp \
+					 Depth/depth_convert.cpp \
+					 Depth/depth.cpp \
+					 Depth/dither.cpp \
+					 Depth/dither_impl.cpp \
+					 Depth/error_diffusion.cpp \
+					 Resize/filter.cpp \
+					 Resize/resize.cpp \
+					 Resize/resize_impl.cpp
+
+include_HEADERS = API/zimg.h \
+				  API/zimg++.hpp
+
+
+libzimg_la_LDFLAGS = -no-undefined -version-info 0
+
+
+vszimg_la_SOURCES = vszimg/vszimg.c
+
+vszimg_la_CFLAGS = $(AM_CFLAGS) -IAPI
+
+vszimg_la_LIBADD = libzimg.la
+
+vszimg_la_LDFLAGS = -no-undefined -avoid-version -module
+
+vszimg_la_LIBTOOLFLAGS = --tag=disable-static
+
+
+if X86SIMD
+noinst_LTLIBRARIES = libsse2.la libavx2.la libf16c.la
+
+libzimg_la_SOURCES += Colorspace/operation_impl_x86.cpp \
+					  Resize/resize_impl_x86.cpp
+
+
+libsse2_la_SOURCES = Colorspace/operation_impl_sse2.cpp \
+					 Resize/resize_impl_sse2.cpp
+
+libsse2_la_CXXFLAGS = $(AM_CXXFLAGS) -msse2
+
+
+libavx2_la_SOURCES = Colorspace/operation_impl_avx2.cpp \
+					 Resize/resize_impl_avx2.cpp
+
+libavx2_la_CXXFLAGS = $(AM_CXXFLAGS) -mavx2 -mfma -mf16c
+
+
+libf16c_la_SOURCES = Colorspace/operation_impl_f16c.cpp
+
+libf16c_la_CXXFLAGS = $(AM_CXXFLAGS) -mf16c
+
+
+libzimg_la_LIBADD = libsse2.la libavx2.la libf16c.la
+endif

autogen.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+autoreconf --verbose --install --force

configure.ac

@@ -0,0 +1,46 @@
+AC_INIT([zimg], [1], [https://github.com/sekrit-twc/zimg/pulls], [zimg], [https://github.com/sekrit-twc/zimg])
+
+AM_INIT_AUTOMAKE([foreign no-dist-gzip dist-xz subdir-objects no-define])
+AM_SILENT_RULES([yes])
+
+LT_INIT([win32-dll])
+
+AC_PROG_CXX
+
+AC_CANONICAL_HOST
+
+
+AC_ARG_ENABLE([x86simd], AS_HELP_STRING([--enable-x86simd], [Enable optimisations for x86 CPUs.]))
+
+AS_IF([test "x$enable_x86simd" = "xyes"], [AC_DEFINE([ZIMG_X86])])
+
+AM_CONDITIONAL([X86SIMD], [test "x$enable_x86simd" = "xyes"])
+
+
+AS_CASE(
+  [$host_cpu],
+  [i?86],   [BITS="32"],
+  [x86_64], [BITS="64"],
+  [AS_IF([test "x$enable_x86simd" = "xyes"], [AC_MSG_ERROR([--enable_x86simd was passed but host CPU type is not x86.])])]
+)
+
+AS_CASE(
+   [$host_os],
+   [cygwin*],
+   [
+      AS_IF(
+         [test "x$BITS" = "x32"],
+         [LDFLAGS="-Wl,--kill-at"]
+      )
+   ],
+   [mingw*],
+   [
+      AS_IF(
+         [test "x$BITS" = "x32"],
+         [LDFLAGS="-Wl,--kill-at"]
+      )
+   ]
+)
+
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT