feat: add patches and edit makefile to apply them if on osx

3rdparty/homography.patch

@@ -0,0 +1,57 @@
+diff --git a/3rdparty/homography/LibHomography/Splines.h b/3rdparty/homography/LibHomography/Splines.h
+index 56a36f1..46a123d 100644
+--- a/3rdparty/homography/LibHomography/Splines.h
++++ b/3rdparty/homography/LibHomography/Splines.h
+@@ -5,8 +5,7 @@
+ //! Global includes
+ #include <cstdlib>
+ #include <cmath>
+-#include <xmmintrin.h>
+-#include <x86intrin.h>
++#include "../../sse2neon/sse2neon.h"
+
+
+ //! Local includes
+diff --git a/3rdparty/homography/LibImages/LibImages.cpp b/3rdparty/homography/LibImages/LibImages.cpp
+index 7c1f6f5..fd75fb4 100644
+--- a/3rdparty/homography/LibImages/LibImages.cpp
++++ b/3rdparty/homography/LibImages/LibImages.cpp
+@@ -14,8 +14,7 @@
+ #ifdef _OPENMP
+ #include <omp.h>
+ #endif
+-#include <xmmintrin.h>
+-#include <x86intrin.h>
++#include "../../sse2neon/sse2neon.h"
+ #include <cmath>
+ #include <algorithm>
+ #include <cstring>
+diff --git a/3rdparty/homography/LibImages/LibImages.h b/3rdparty/homography/LibImages/LibImages.h
+index 51233a3..8ae589d 100644
+--- a/3rdparty/homography/LibImages/LibImages.h
++++ b/3rdparty/homography/LibImages/LibImages.h
+@@ -5,8 +5,7 @@
+ #include <stdlib.h>
+ #include <string>
+ #include <vector>
+-#include <xmmintrin.h>
+-#include <x86intrin.h>
++#include "../../sse2neon/sse2neon.h"
+
+ //! Local includes
+
+diff --git a/3rdparty/homography/Utilities/Utilities.h b/3rdparty/homography/Utilities/Utilities.h
+index cc80a22..ee45bf9 100644
+--- a/3rdparty/homography/Utilities/Utilities.h
++++ b/3rdparty/homography/Utilities/Utilities.h
+@@ -8,8 +8,8 @@
+ #include <sstream>
+ #include <iostream>
+ #include <iomanip>
+-#include <xmmintrin.h>
+-#include <x86intrin.h>
++#include "../../sse2neon/sse2neon.h"
++
+ #include <vector>
+
+

3rdparty/iio.patch

@@ -0,0 +1,15 @@
+diff --git a/3rdparty/iio/iio.c b/3rdparty/iio/iio.c
+index 5bff3d8..67b06ac 100644
+--- a/3rdparty/iio/iio.c
++++ b/3rdparty/iio/iio.c
+@@ -535,7 +535,9 @@ int iio_type_id(size_t sample_size, bool ieeefp_sample, bool signed_sample)
+ 		switch(sample_size) {
+ 		case sizeof(float):       return IIO_TYPE_FLOAT;
+ 		case sizeof(double):      return IIO_TYPE_DOUBLE;
+-		case sizeof(long double): return IIO_TYPE_LONGDOUBLE;
++		#ifdef I_CAN_HAS_LONGDOUBLE
++		    case sizeof(long double): return IIO_TYPE_LONGDOUBLE;
++		#endif//I_CAN_HAS_LONGDOUBLE
+ 		case sizeof(float)/2:     return IIO_TYPE_HALF;
+ 		default: fail("bad float size %zu", sample_size);
+ 		}

3rdparty/imscript.patch

@@ -0,0 +1,15 @@
+diff --git a/3rdparty/imscript/src/iio.c b/3rdparty/imscript/src/iio.c
+index 2516713..8428556 100644
+--- a/3rdparty/imscript/src/iio.c
++++ b/3rdparty/imscript/src/iio.c
+@@ -535,7 +535,9 @@ int iio_type_id(size_t sample_size, bool ieeefp_sample, bool signed_sample)
+ 		switch(sample_size) {
+ 		case sizeof(float):       return IIO_TYPE_FLOAT;
+ 		case sizeof(double):      return IIO_TYPE_DOUBLE;
+-		case sizeof(long double): return IIO_TYPE_LONGDOUBLE;
++		#ifdef I_CAN_HAS_LONGDOUBLE
++		    case sizeof(long double): return IIO_TYPE_LONGDOUBLE;
++		#endif//I_CAN_HAS_LONGDOUBLE
+ 		case sizeof(float)/2:     return IIO_TYPE_HALF;
+ 		default: fail("bad float size %zu", sample_size);
+ 		}

3rdparty/mgm.patch

@@ -0,0 +1,15 @@
+diff --git a/3rdparty/mgm/iio/iio.c b/3rdparty/mgm/iio/iio.c
+index 4a678db..33de681 100644
+--- a/3rdparty/mgm/iio/iio.c
++++ b/3rdparty/mgm/iio/iio.c
+@@ -489,7 +489,9 @@ int iio_type_id(size_t sample_size, bool ieeefp_sample, bool signed_sample)
+ 		switch(sample_size) {
+ 		case sizeof(float):       return IIO_TYPE_FLOAT;
+ 		case sizeof(double):      return IIO_TYPE_DOUBLE;
+-		case sizeof(long double): return IIO_TYPE_LONGDOUBLE;
++		#ifdef I_CAN_HAS_LONGDOUBLE
++		    case sizeof(long double): return IIO_TYPE_LONGDOUBLE;
++		#endif//I_CAN_HAS_LONGDOUBLE
+ 		case sizeof(float)/2:     return IIO_TYPE_HALF;
+ 		default: fail("bad float size %zu", sample_size);
+ 		}

3rdparty/mgm_multi.patch

@@ -0,0 +1,17 @@
+diff --git a/3rdparty/mgm_multi/iio/iio.c b/3rdparty/mgm_multi/iio/iio.c
+index 9f28831..7475497 100644
+--- a/3rdparty/mgm_multi/iio/iio.c
++++ b/3rdparty/mgm_multi/iio/iio.c
+@@ -511,8 +511,10 @@ int iio_type_id(size_t sample_size, bool ieeefp_sample, bool signed_sample)
+ 		switch(sample_size) {
+ 		case sizeof(float):       return IIO_TYPE_FLOAT;
+ 		case sizeof(double):      return IIO_TYPE_DOUBLE;
+-		case sizeof(long double): return IIO_TYPE_LONGDOUBLE;
+-		case sizeof(float)/2:     return IIO_TYPE_HALF;
++		#ifdef I_CAN_HAS_LONGDOUBLE
++		    case sizeof(long double): return IIO_TYPE_LONGDOUBLE;
++		#endif//I_CAN_HAS_LONGDOUBLE
++	    case sizeof(float)/2:     return IIO_TYPE_HALF;
+ 		default: fail("bad float size %zu", sample_size);
+ 		}
+ 	} else {

3rdparty/sift.patch

@@ -0,0 +1,28 @@
+diff --git a/3rdparty/sift/simd/LibImages/LibImages.cpp b/3rdparty/sift/simd/LibImages/LibImages.cpp
+index 6acbe4e..870d80b 100644
+--- a/3rdparty/sift/simd/LibImages/LibImages.cpp
++++ b/3rdparty/sift/simd/LibImages/LibImages.cpp
+@@ -10,8 +10,7 @@
+ #ifdef _OPENMP
+ #include <omp.h>
+ #endif
+-#include <xmmintrin.h>
+-#include <x86intrin.h>
++#include "../../sse2neon/sse2neon.h"
+ #include <cmath>
+ #include <algorithm>
+ #include <cstring>
+diff --git a/3rdparty/sift/simd/LibImages/LibImages.h b/3rdparty/sift/simd/LibImages/LibImages.h
+index 9918472..c8c5db1 100644
+--- a/3rdparty/sift/simd/LibImages/LibImages.h
++++ b/3rdparty/sift/simd/LibImages/LibImages.h
+@@ -5,8 +5,7 @@
+ #include <stdlib.h>
+ #include <string>
+ #include <vector>
+-#include <xmmintrin.h>
+-#include <x86intrin.h>
++#include "../../../sse2neon/sse2neon.h"
+
+ //! Local includes
+

3rdparty/tvl1flow.patch

@@ -0,0 +1,15 @@
+diff --git a/3rdparty/tvl1flow/iio.c b/3rdparty/tvl1flow/iio.c
+index 9f28831..e27955e 100644
+--- a/3rdparty/tvl1flow/iio.c
++++ b/3rdparty/tvl1flow/iio.c
+@@ -511,7 +511,9 @@ int iio_type_id(size_t sample_size, bool ieeefp_sample, bool signed_sample)
+ 		switch(sample_size) {
+ 		case sizeof(float):       return IIO_TYPE_FLOAT;
+ 		case sizeof(double):      return IIO_TYPE_DOUBLE;
+-		case sizeof(long double): return IIO_TYPE_LONGDOUBLE;
++		#ifdef I_CAN_HAS_LONGDOUBLE
++		    case sizeof(long double): return IIO_TYPE_LONGDOUBLE;
++		#endif//I_CAN_HAS_LONGDOUBLE
+ 		case sizeof(float)/2:     return IIO_TYPE_HALF;
+ 		default: fail("bad float size %zu", sample_size);
+ 		}

makefile

@@ -1,15 +1,34 @@
+UNAME := $(shell uname)
+
 # the following two options are used to control all C and C++ compilations
 CFLAGS   ?= -march=native -O3
 CXXFLAGS ?= -march=native -O3
+
+ifeq ($(UNAME), Darwin)
+    # on Mac OS, use recommended flag for sse2neon
+	CFLAGS   ?= -march=armv8-a+fp+simd+crypto+crc -O3
+	CXXFLAGS ?= -march=armv8-a+fp+simd+crypto+crc -O3
+endif
+
 export CFLAGS
 export CXXFLAGS
 
+ifeq ($(UNAME), Darwin)
+    # on mac, also link to homebrew
+	export C_INCLUDE_PATH := ${C_INCLUDE_PATH}:/opt/homebrew/include
+	export CPLUS_INCLUDE_PATH := ${CPLUS_INCLUDE_PATH}:/opt/homebrew/include
+	export LIBRARY_PATH := ${LIBRARY_PATH}:/opt/homebrew/lib
+	export LD_LIBRARY_PATH := ${LD_LIBRARY_PATH}:/opt/homebrew/lib
+    # apply patches, ignore if they fail (already patched)
+	patch_osx = git apply 3rdparty/*.patch || true
+endif
+
 # these options are only used for the programs directly inside "./c/"
 IIOLIBS     = -lz -ltiff -lpng -ljpeg -lm
 
 
 # default rule builds only the programs necessary for the test
-default: homography sift mgm_multi tvl1 lsd executables libraries
+default: patch_osx homography sift mgm_multi tvl1 lsd executables libraries
 
 # the "all" rule builds three further correlators
 all: default msmw3 sgbm
@@ -22,6 +41,9 @@ test: default
 # four standard "modules": homography, sift, mgm, and mgm_multi
 #
 
+patch_osx:
+	$(patch_osx)
+
 homography:
 	$(MAKE) -j -C 3rdparty/homography
 	cp 3rdparty/homography/homography bin