Fix #29506: libmv build issues on freebsd, patch by Shane Ambler.

extern/libmv/libmv/numeric/numeric.h

@@ -33,7 +33,7 @@
 #include <Eigen/QR>
 #include <Eigen/SVD>
 
-#if _WIN32 || __APPLE__
+#if _WIN32 || __APPLE__ || __FreeBSD__
   void static sincos (double x, double *sinx, double *cosx) {
     *sinx = sin(x);
     *cosx = cos(x);

extern/libmv/libmv/tracking/brute_region_tracker.cc

@@ -24,7 +24,7 @@
 #include <emmintrin.h>
 #endif
 
-#ifndef __APPLE__
+#if !defined(__APPLE__) && !defined(__FreeBSD__)
 // Needed for memalign on Linux and _aligned_alloc on Windows.
 #ifdef FREE_WINDOWS
 /* make sure _aligned_malloc is included */
@@ -59,6 +59,15 @@ void *aligned_malloc(int size, int alignment) {
   // they work natively with SSE types with no further work.
   CHECK_EQ(alignment, 16);
   return malloc(size);
+#elif __FreeBSD__
+  void *result;
+
+  if(posix_memalign(&result, alignment, size)) {
+    // non-zero means allocation error
+    // either no allocation or bad alignment value
+    return NULL;
+  }
+  return result;
 #else // This is for Linux.
   return memalign(alignment, size);
 #endif

extern/libmv/third_party/glog/src/config.h

@@ -4,6 +4,8 @@
 /* Namespace for Google classes */
 #ifdef __APPLE__
  #include "config_mac.h"
+#elif __FreeBSD__
+ #include "config_freebsd.h"
 #elif __MINGW32__
  #include "windows/config.h"
 #elif __GNUC__

extern/libmv/third_party/glog/src/config_freebsd.h

@@ -0,0 +1,161 @@
+/* src/config.h.  Generated from config.h.in by configure.  */
+/* src/config.h.in.  Generated from configure.ac by autoheader.  */
+
+/* Namespace for Google classes */
+#define GOOGLE_NAMESPACE google
+
+/* Define if you have the `dladdr' function */
+/* #undef HAVE_DLADDR */
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* Define to 1 if you have the <execinfo.h> header file. */
+#define HAVE_EXECINFO_H 1
+
+/* Define if you have the `fcntl' function */
+#define HAVE_FCNTL 1
+
+/* Define to 1 if you have the <glob.h> header file. */
+#define HAVE_GLOB_H 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the `pthread' library (-lpthread). */
+#define HAVE_LIBPTHREAD 1
+
+/* Define to 1 if you have the <libunwind.h> header file. */
+/* #undef HAVE_LIBUNWIND_H */
+
+/* define if you have google gflags library */
+#define HAVE_LIB_GFLAGS 1
+
+/* define if you have google gmock library */
+/* #undef HAVE_LIB_GMOCK */
+
+/* define if you have google gtest library */
+/* #undef HAVE_LIB_GTEST */
+
+/* define if you have libunwind */
+/* #undef HAVE_LIB_UNWIND */
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* define if the compiler implements namespaces */
+#define HAVE_NAMESPACES 1
+
+/* Define if you have POSIX threads libraries and header files. */
+#define HAVE_PTHREAD 1
+
+/* Define to 1 if you have the <pwd.h> header file. */
+#define HAVE_PWD_H 1
+
+/* define if the compiler implements pthread_rwlock_* */
+#define HAVE_RWLOCK 1
+
+/* Define if you have the `sigaltstack' function */
+#define HAVE_SIGALTSTACK 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the <syscall.h> header file. */
+/* #undef HAVE_SYSCALL_H */
+
+/* Define to 1 if you have the <syslog.h> header file. */
+#define HAVE_SYSLOG_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/syscall.h> header file. */
+#define HAVE_SYS_SYSCALL_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#define HAVE_SYS_TIME_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/ucontext.h> header file. */
+#define HAVE_SYS_UCONTEXT_H 1
+
+/* Define to 1 if you have the <sys/utsname.h> header file. */
+#define HAVE_SYS_UTSNAME_H 1
+
+/* Define to 1 if you have the <ucontext.h> header file. */
+#define HAVE_UCONTEXT_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* define if the compiler supports using expression for operator */
+#define HAVE_USING_OPERATOR 1
+
+/* define if your compiler has __attribute__ */
+#define HAVE___ATTRIBUTE__ 1
+
+/* define if your compiler has __builtin_expect */
+#define HAVE___BUILTIN_EXPECT 1
+
+/* define if your compiler has __sync_val_compare_and_swap */
+/* #undef HAVE___SYNC_VAL_COMPARE_AND_SWAP */
+
+/* Name of package */
+#define PACKAGE "glog"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "opensource@google.com"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "glog"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "glog 0.3.1"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "glog"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "0.3.1"
+
+/* How to access the PC from a struct ucontext */
+/* #define PC_FROM_UCONTEXT uc_mcontext.gregs[REG_RIP] */
+
+/* Define to necessary symbol if this constant uses a non-standard name on
+   your system. */
+/* #undef PTHREAD_CREATE_JOINABLE */
+
+/* The size of `void *', as computed by sizeof. */
+#define SIZEOF_VOID_P 8
+
+/* Define to 1 if you have the ANSI C header files. */
+/* #undef STDC_HEADERS */
+
+#define STDC_HEADERS 1
+/* the namespace where STL code like vector<> is defined */
+#define STL_NAMESPACE std
+
+/* location of source code */
+#define TEST_SRC_DIR "."
+
+/* Version number of package */
+#define VERSION "0.3.1"
+
+/* Stops putting the code inside the Google namespace */
+#define _END_GOOGLE_NAMESPACE_ }
+
+/* Puts following code inside the Google namespace */
+#define _START_GOOGLE_NAMESPACE_ namespace google {
+