How to get PTAM and PTAMM running on OSX 10.6 (and probably 10.7)

The build instructions in PTAMM for OSX are now out of date if you are using the latest OSX 10.6 and above. I shall update the manual shortly, but until then follow this guide to get PTAM and PTAMM up and running on OSX.

Check out the latest libCVD and GVars

cvs -z3 -d:pserver:anoncvs@cvs.savannah.nongnu.org:/cvsroot/libcvd co libcvd
cvs -z3 -d:pserver:anoncvs@cvs.savannah.nongnu.org:/cvsroot/libcvd co gvars3

I checked mine out on Fri 30th Sept 2011. As this is the CVS repo, things may change rapidly.

Edit the two lines in configure-10.5-32bit in PTAMM to point to the SDK that actually exists on your machine. It will be one of these:

• MacOSX10.5.sdk
• MacOSX10.6.sdk
• MacOSX10.7.sdk

Then add -D_OSX to the end of the first three export lines, but inside the quotes. This define is for a modification we are going to have to make to libCVD in a moment. If the repo has been updated and contains this fix you may not need to add this define.

Your configure-10.5-32bit should now look like this:

#!/bin/bash
#This script forces Snow Leopard (10.6) to build using Leopard (10.5) and to build a 32 bit build.
# Use it when building livCVD, GVars, and lib3ds
#
# Originally wirrten by Damian Stewart
# http://lists.nongnu.org/archive/html/libcvd-members/2010-05/msg00000.html
# Modified by Robert Castle

SDK="-isysroot /Developer/SDKs/MacOSX10.6.sdk"
SDKLIB="-Wl,-syslibroot,/Developer/SDKs/MacOSX10.6.sdk"
export MACOSX_DEPLOYMENT_TARGET="10.5"

ARCH="-arch i386"

export CFLAGS="$ARCH $SDK -mmacosx-version-min=10.5 -m32 -D_OSX"
export CXXFLAGS="$ARCH $SDK -mmacosx-version-min=10.5 -m32 -D_OSX"
export CPPFLAGS="$ARCH $SDK -mmacosx-version-min=10.5 -m32 -D_OSX"
export LDFLAGS="$ARCH $SDKLIB -mmacosx-version-min=10.5 -m32"

CC="/usr/bin/gcc-4.2"
CXX="/usr/bin/g++-4.2"
OBJC="/usr/bin/gcc-4.2"

./configure $1 $2 $3 $4 $5 $6 $7 $8 $9

Copy configure-10.5-32bit from PTAMM into the libCVD and GVar directories.

Now we need to make some changes to libCVD (unless they have been fixed already).

pnm_src/pnm_grok.cxx line 634
change n to n_shorts

cvd_src/Linux/dvbuffer3_dc1394v2.cc lines 131 and 158
add ULL to the long numbers
0x814436200006075ULL

cvd/gl_helpers.h
This is where we need the _OSX define. We need to point it to the Apple OpenGL framework and not the X11 OpenGL files.

change

#include <GL/gl.h>
#include <GL/glu.h>

to

#ifdef _OSX
#include <OpenGL/gl.h>
#include <OpenGL/glu.h>
#else
#include <GL/gl.h>
#include <GL/glu.h>
#endif

progs/calibrate.cxx line 813
Apple’s GL files do not have GL_TEXTURE_RECTANGLE_NV defined so we need to make this a bit more platform agnostic. I have not tested these changes on Linux or Windows, but I think they should be fine.
Replace the block of gl code between the GL_BLENDs with this. All it changes is GL_TEXTURE_RECTANGLE_NV into texTarget and adds the #ifdefs to the top.

	GLenum texTarget;
#ifdef GL_TEXTURE_RECTANGLE_ARB
	texTarget=GL_TEXTURE_RECTANGLE_ARB;
#else
#ifdef GL_TEXTURE_RECTANGLE_NV
	texTarget=GL_TEXTURE_RECTANGLE_NV;
#else
	texTarget=GL_TEXTURE_RECTANGLE_EXT;
#endif
#endif

	glEnable(texTarget);
	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
	glTexParameterf( texTarget, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
	glTexParameterf( texTarget, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
	glPixelStorei(GL_UNPACK_ALIGNMENT,1);
	glTexImage2D(temp, 0, texTarget);
	glBegin(GL_QUADS);
	glTexCoord2i(0, 0);
	glVertex2i(0,0);
	glTexCoord2i(temp.size().x, 0);
	glVertex2i(disp.size().x,0);
	glTexCoord2i(temp.size().x,temp.size().y);
	glVertex2i(disp.size().x,disp.size().y);
	glTexCoord2i(0, temp.size().y);
	glVertex2i(0, disp.size().y);
	glEnd ();
	glDisable(texTarget);

progs/video_play_source.cc line 73
This is a similar change to the last.

	GLenum texTarget;
#ifdef GL_TEXTURE_RECTANGLE_ARB
	texTarget=GL_TEXTURE_RECTANGLE_ARB;
#else
#ifdef GL_TEXTURE_RECTANGLE_NV
	texTarget=GL_TEXTURE_RECTANGLE_NV;
#else
	texTarget=GL_TEXTURE_RECTANGLE_EXT;
#endif
#endif

	glEnable(texTarget);
	for(;;)
	{
		display.get_events(e);
		if(e.should_quit())
			break;

		VideoFrame<C>* frame = buffer->get_frame();

		glViewport(0, 0, display.size().x, display.size().y);
		glMatrixMode(GL_PROJECTION);
		glLoadIdentity();
		glRasterPos2f(-1, 1);
		glOrtho(-0.375, display.size().x-0.375, display.size().y-0.375, -0.375, -1 , 1); //offsets to make (0,0) the top left pixel (rather than off the display)

		glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
		glTexParameterf( texTarget, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
		glTexParameterf( texTarget, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
		glPixelStorei(GL_UNPACK_ALIGNMENT,1);
		glTexImage2D(*frame, 0, texTarget);
		glBegin(GL_QUADS);
		glTexCoord2i(0, 0);
		glVertex2i(0,0);
		glTexCoord2i(frame->size().x, 0);
		glVertex2i(display.size().x,0);
		glTexCoord2i(frame->size().x,frame->size().y);
		glVertex2i(display.size().x,display.size().y);
		glTexCoord2i(0, frame->size().y);
		glVertex2i(0, display.size().y);
		glEnd ();

		if(f)
		{
			cout << "frame size: " << frame->size() << endl;
			f=0;
		}
		buffer->put_frame(frame);
		glFlush();

		display.swap_buffers();
	}
	glDisable(texTarget);

Then build libCVD and GVars3

cd libcvd
./configure-10.5-32bit --prefix=$HOME/local/
make -j3 && make install

My configure options look like this:

Options:
inline_asm dc1394v2 qtbuffer videodisplay tr1_shared_ptr toon lapack pthread png jpeg tiff glob memalign

Missing options for darwin10.8.0:
assembler ffmpeg posix_rt

Dodgy things:
missing_c99_feenableexcept

SIMD support:
mmx mmxext sse sse2 sse3

Missing SIMD support for i386-apple-darwin10.8.0:

Now build GVars3

cd ../gvars3
./configure-10.5-32bit --prefix=$HOME/local/
make -j3 && make install

I did not need to make any other changes to libCVD or GVars.

Now on to PTAM

cd ../PTAM
cp Build/OSX/* .
vim Makefile

Edit the location of your include and lib paths, eg $(HOME)/local/include and $(HOME)/local/lib.

Then add -arch i386 to the end of the CC line, e.g.

CC = g++ -g -O3 -arch i386

Finally add -m32 to the end of the COMPILEFLAGS and LINKFLAGS lines, e.g.

COMPILEFLAGS = -I $(HOME)/local/include -D_OSX -D_REENTRANT -m32
LINKFLAGS = -framework OpenGL -framework VecLib -L$(HOME)/local/lib/ -lGVars3 -lcvd -m32

Now build PTAM

make -j3

Finally on to PTAMM. PTAMM already has the 32-bit changes in the Makefile, so just set your include and lib paths.

cd ../PTAMM
vim Makefile
make -j3

If you want to use the 3D model game, you also need to build lib3DS. Use the configure-10.5-32bit script to build this as well.

I have tested this with a Logitech C910 and both PTAM and PTAMM work well.

Let me know how you all get on with this, and if it works on Lion.