Building the webkit branch (clone of debian's 2.28.0+webkit package) on OS X 10.4/ppc (with all dependencies at the level of GNOME2.28 current releases) fails during final linking.

/bin/sh ../libtool --tag=CC   --mode=link gcc -I/sw/include/glib-2.0 -I/sw/lib/glib-2.0/include -I/sw/lib/fontconfig2/include -I/sw/include/gconf/2 -I/sw/include/gtk-unix-print-2.0 -I/sw/include/gtk-2.0 -I/sw/include/atk-1.0 -I/sw/include/cairo -I/sw/include/pango-1.0 -I/sw/lib/gtk-2.0/include -I/sw/include/pixman-1 -I/sw/include/freetype2 -I/sw/include -I/sw/include/libxml2 -I/sw/include/startup-notification-1.0 -I/sw/include/dbus-1.0 -I/sw/lib/dbus-1.0/include -I/sw/include/rarian -I/usr/X11R6/include -I/usr/X11/include  -Wall -Wno-uninitialized -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wno-sign-compare -Wall -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wno-sign-compare   -I/sw/include/glib-2.0 -I/sw/lib/glib-2.0/include -I/sw/lib/fontconfig2/include -I/sw/include/webkit-1.0 -I/sw/include/gtk-2.0 -I/sw/include/libsoup-2.4 -I/sw/lib/gtk-2.0/include -I/sw/include/atk-1.0 -I/sw/include/cairo -I/sw/include/pango-1.0 -I/sw/include/pixman-1 -I/sw/include/freetype2 -I/sw/include -I/usr/X11R6/include -I/usr/X11/include  -g -O2  -L/sw/lib -o yelp yelp-yelp-base.o yelp-yelp-bookmarks.o yelp-yelp-debug.o yelp-yelp-error.o yelp-yelp-html.o yelp-yelp-io-channel.o yelp-yelp-settings.o yelp-yelp-utils.o yelp-yelp-window.o yelp-yelp-marshal.o yelp-yelp-main.o yelp-yelp-page.o yelp-yelp-transform.o yelp-yelp-document.o yelp-yelp-toc.o yelp-yelp-docbook.o yelp-yelp-db-print.o yelp-yelp-mallard.o yelp-yelp-man-parser.o yelp-yelp-man.o yelp-yelp-info.o yelp-yelp-info-parser.o yelp-gtkentryaction.o yelp-yelp-search.o yelp-yelp-search-parser.o yelp-eggdesktopfile.o yelp-eggsmclient.o yelp-eggsmclient-xsmp.o   -L/sw/lib -L/sw/lib/fontconfig2/lib -lgconf-2 -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgio-2.0 -lpangoft2-1.0 -lgdk_pixbuf-2.0 -lpangocairo-1.0 -lcairo -lpango-1.0 -lfreetype -lfontconfig -lgmodule-2.0 -lexslt -lxslt -lz -liconv -lm -lxml2 -lstartup-notification-1 -ldbus-glib-1 -ldbus-1 -lpthread -lgobject-2.0 -lglib-2.0 -lrarian   -lz -lbz2  -L/sw/lib -L/sw/lib/fontconfig2/lib -lwebkit-1.0 -lgtk-x11-2.0 -lsoup-2.4 -lgdk-x11-2.0 -latk-1.0 -lpangoft2-1.0 -lgdk_pixbuf-2.0 -lpangocairo-1.0 -lcairo -lpango-1.0 -lfreetype -lfontconfig -lgio-2.0 -lgobject-2.0 -lgmodule-2.0 -lglib-2.0 -lSM -lICE  -L/usr/X11R6/lib -lX11  -lSM -L/usr/X11/lib -L/usr/X11R6/lib 
libtool: link: gcc -I/sw/include/glib-2.0 -I/sw/lib/glib-2.0/include -I/sw/lib/fontconfig2/include -I/sw/include/gconf/2 -I/sw/include/gtk-unix-print-2.0 -I/sw/include/gtk-2.0 -I/sw/include/atk-1.0 -I/sw/include/cairo -I/sw/include/pango-1.0 -I/sw/lib/gtk-2.0/include -I/sw/include/pixman-1 -I/sw/include/freetype2 -I/sw/include -I/sw/include/libxml2 -I/sw/include/startup-notification-1.0 -I/sw/include/dbus-1.0 -I/sw/lib/dbus-1.0/include -I/sw/include/rarian -I/usr/X11R6/include -I/usr/X11/include -Wall -Wno-uninitialized -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wno-sign-compare -Wall -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wno-sign-compare -I/sw/include/glib-2.0 -I/sw/lib/glib-2.0/include -I/sw/lib/fontconfig2/include -I/sw/include/webkit-1.0 -I/sw/include/gtk-2.0 -I/sw/include/libsoup-2.4 -I/sw/lib/gtk-2.0/include -I/sw/include/atk-1.0 -I/sw/include/cairo -I/sw/include/pango-1.0 -I/sw/include/pixman-1 -I/sw/include/freetype2 -I/sw/include -I/usr/X11R6/include -I/usr/X11/include -g -O2 -o yelp yelp-yelp-base.o yelp-yelp-bookmarks.o yelp-yelp-debug.o yelp-yelp-error.o yelp-yelp-html.o yelp-yelp-io-channel.o yelp-yelp-settings.o yelp-yelp-utils.o yelp-yelp-window.o yelp-yelp-marshal.o yelp-yelp-main.o yelp-yelp-page.o yelp-yelp-transform.o yelp-yelp-document.o yelp-yelp-toc.o yelp-yelp-docbook.o yelp-yelp-db-print.o yelp-yelp-mallard.o yelp-yelp-man-parser.o yelp-yelp-man.o yelp-yelp-info.o yelp-yelp-info-parser.o yelp-gtkentryaction.o yelp-yelp-search.o yelp-yelp-search-parser.o yelp-eggdesktopfile.o yelp-eggsmclient.o yelp-eggsmclient-xsmp.o  -L/sw/lib -L/sw/lib/fontconfig2/lib /sw/lib/libgconf-2.dylib /sw/lib/libexslt.dylib /sw/lib/libxslt.dylib /sw/lib/libiconv.dylib -lm /sw/lib/libxml2.dylib /sw/lib/libstartup-notification-1.dylib /sw/lib/libdbus-glib-1.dylib /sw/lib/libdbus-1.dylib -lpthread /sw/lib/librarian.dylib -lz -lbz2 /sw/lib/libwebkit-1.0.dylib /sw/lib/libgtk-x11-2.0.dylib /sw/lib/libsoup-2.4.dylib /sw/lib/libgdk-x11-2.0.dylib /sw/lib/libatk-1.0.dylib /sw/lib/pango-ft219/lib/libpangoft2-1.0.dylib /sw/lib/libgdk_pixbuf-2.0.dylib /sw/lib/pango-ft219/lib/libpangocairo-1.0.dylib /sw/lib/libcairo.dylib /sw/lib/pango-ft219/lib/libpango-1.0.dylib /sw/lib/freetype219/lib/libfreetype.dylib /sw/lib/fontconfig2/lib/libfontconfig.dylib /sw/lib/libgio-2.0.dylib /sw/lib/libgobject-2.0.dylib /sw/lib/libgmodule-2.0.dylib /sw/lib/libglib-2.0.dylib -lICE -L/usr/X11R6/lib -lX11 -lSM -L/usr/X11/lib
/usr/libexec/gcc/powerpc-apple-darwin8/4.0.1/ld: warning -L: directory name (/usr/X11/lib) does not exist
/usr/libexec/gcc/powerpc-apple-darwin8/4.0.1/ld: Undefined symbols:
_libintl_gettext
_g_thread_init
_libintl_bind_textdomain_codeset
_libintl_bindtextdomain
_libintl_textdomain
collect2: ld returned 1 exit status
make[3]: *** [yelp] Error 1


3 semi-separate issues here:

1. Pedantic cleanup: passing tons of -I to linker is pointless and makes it harder to read the build log to trace actual problems. The FOO_CFLAGS from PKG_CHECK_MODULES(FOO) is called "CFLAGS" but it's really compile-stage (.c->.o) flags not general C flags (for all contexts of gcc). That's not the same as the automake/libtool meaning of a &_CFLAGS variable (which is for all contexts) compared to *_CPPFLAGS (which is for .c->.o). Saner I think to pass pPKG_CHECK_MODULES CFLAGS via makefile CPPFLAGS in src/Makefile.am.

2. src/yelp-main.c uses g_thread but configure does not check for and propagate linker flags for libgthread. Probably works on linux because some other specified dependency does link against libgthread and propagates the linker flag 
via .la file or the linker does indirect symbol resolution. Fink is following apple's precedent (along with some other distros) of scrapping .la dependencies. And darwin's linker has never allowed indirect symbol resolution (and now some linux distros' linkers are behaving that way too). Quick fix is to add gthread-2.0 to the PKG_CHECK_MODULES(YELP) list.

3. yelp uses gettext directly but doesn't explicitly link against it directly. AM_GLIB_GNU_GETTEXT checks for the proper linker flags to use and sets a INTLLIBS automake variable, so just need to pass that along with other dependencies' linker flags.