povray: fix musl build

srcpkgs/povray/patches/musl.patch

@@ -1,5 +1,5 @@
---- a/vfe/vfesession.h	2019-01-30 18:47:18.816545460 +0100
+--- a/vfe/vfesession.h
-+++ b/vfe/vfesession.h	2019-01-30 18:47:18.816545460 +0100
++++ b/vfe/vfesession.h
 @@ -40,6 +40,8 @@
  
  #include "base/image/colourspace.h"
@@ -9,3 +9,40 @@
  namespace vfe
  {
    using namespace pov_frontend;
+--- a/source/base/image/image.cpp
++++ b/source/base/image/image.cpp
+@@ -36,6 +36,7 @@
+ #include <sys/types.h>
+ #include <sys/stat.h>
+ #include <fcntl.h>
++#include <unistd.h>
+ 
+ 
+ // configbase.h must always be the first POV file included within base *.cpp files
+@@ -2829,7 +2830,7 @@ class FileBackedPixelContainer
+ 			meta[0] = sizeof(pixel_type);
+ 			meta[1] = m_Width;
+ 			meta[2] = m_Height;
+-			if (lseek64(m_File, pos, SEEK_SET) != pos)
++			if (lseek(m_File, pos, SEEK_SET) != pos)
+ 				throw POV_EXCEPTION(kFileDataErr, "Intermediate image storage backing file write/seek failed at creation.");
+ 			if (write(m_File, &meta[0], (int) sizeof(size_type)*3) != (sizeof(size_type)*3))
+ 				throw POV_EXCEPTION(kFileDataErr, "Intermediate image storage backing file write failed at creation.");
+@@ -3000,7 +3001,7 @@ class FileBackedPixelContainer
+ #endif
+ 				pos = block * sizeof(pixel_type) * m_Blocksize;
+ 				int chunk = sizeof(pixel_type) * m_Blocksize;
+-				if (lseek64(m_File, pos, SEEK_SET) != pos)
++				if (lseek(m_File, pos, SEEK_SET) != pos)
+ 					throw POV_EXCEPTION(kFileDataErr, "Intermediate image storage backing file read/seek failed.");
+ 				int bytes = read(m_File, &m_Buffer[0], chunk);
+ 				if (bytes != (sizeof(pixel_type) * m_Blocksize))
+@@ -3023,7 +3024,7 @@ class FileBackedPixelContainer
+ 
+ 			if (m_Dirty) {
+ 				pos = m_CurrentBlock * sizeof(pixel_type) * m_Blocksize;
+-				if (lseek64(m_File, pos, SEEK_SET) != pos)
++				if (lseek(m_File, pos, SEEK_SET) != pos)
+ 					throw POV_EXCEPTION(kFileDataErr, "Intermediate image storage backing file write/seek failed.");
+ 				if (write(m_File, &m_Buffer[0], (int) sizeof(pixel_type) * m_Blocksize) != (sizeof(pixel_type) * m_Blocksize))
+ 					throw POV_EXCEPTION(kFileDataErr, "Intermediate image storage backing file write failed.");

srcpkgs/povray/template

@@ -21,6 +21,8 @@ checksum=53d11ebd2972fc452af168a00eb83aefb61387662c10784e81b63e44aa575de4
 nocross="Builds fail on ARM architectures
  Logs are at https://travis-ci.org/void-linux/void-packages/builds/412583835."
 LDFLAGS+=" -Wl,-z,stack-size=1048576"
+CFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
+CXXFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
 
 pre_configure() {
 	cd $wrksrc/unix