I've tried compiling uim 1.6.1 on OSX, where I already compiled GTK using jhbuild. GTK compile in question is built to use quartz, not X11 backend.

The errors listed:

'eggtrayicon.c' || echo './'`eggtrayicon.c
eggtrayicon.c:29:22: error: gdk/gdkx.h: No such file or directory
eggtrayicon.c: In function 'egg_tray_icon_constructed':
eggtrayicon.c:164: error: 'Display' undeclared (first use in this function)
eggtrayicon.c:164: error: (Each undeclared identifier is reported only once
eggtrayicon.c:164: error: for each function it appears in.)
eggtrayicon.c:164: error: 'xdisplay' undeclared (first use in this function)
eggtrayicon.c:164: warning: implicit declaration of function 'gdk_x11_display_get_xdisplay'
eggtrayicon.c:164: warning: nested extern declaration of 'gdk_x11_display_get_xdisplay'
eggtrayicon.c:165: warning: ISO C90 forbids mixed declarations and code
eggtrayicon.c:171: error: 'EggTrayIcon' has no member named 'selection_atom'
eggtrayicon.c:171: warning: implicit declaration of function 'XInternAtom'
eggtrayicon.c:171: warning: nested extern declaration of 'XInternAtom'
eggtrayicon.c:171: error: 'False' undeclared (first use in this function)
eggtrayicon.c:173: error: 'EggTrayIcon' has no member named 'manager_atom'
eggtrayicon.c:175: error: 'EggTrayIcon' has no member named 'system_tray_opcode_atom'
eggtrayicon.c:179: error: 'EggTrayIcon' has no member named 'orientation_atom'
eggtrayicon.c:183: error: 'EggTrayIcon' has no member named 'visual_atom'
eggtrayicon.c: In function 'egg_tray_icon_clear_manager_window':
eggtrayicon.c:199: error: 'EggTrayIcon' has no member named 'manager_window'
eggtrayicon.c:199: error: 'None' undeclared (first use in this function)
eggtrayicon.c:204: error: 'EggTrayIcon' has no member named 'manager_window'
eggtrayicon.c:208: error: 'EggTrayIcon' has no member named 'manager_window'
eggtrayicon.c:209: error: 'EggTrayIcon' has no member named 'manager_visual'
eggtrayicon.c: In function 'egg_tray_icon_expose':
eggtrayicon.c:254: error: 'EggTrayIcon' has no member named 'manager_visual_rgba'
eggtrayicon.c: In function 'egg_tray_icon_get_orientation_property':
eggtrayicon.c:299: error: 'Display' undeclared (first use in this function)
eggtrayicon.c:299: error: 'xdisplay' undeclared (first use in this function)
eggtrayicon.c:299: warning: implicit declaration of function 'GDK_DISPLAY_XDISPLAY'
eggtrayicon.c:299: warning: nested extern declaration of 'GDK_DISPLAY_XDISPLAY'
eggtrayicon.c:301: error: 'Atom' undeclared (first use in this function)
eggtrayicon.c:301: error: expected ';' before 'type'
eggtrayicon.c:302: warning: ISO C90 forbids mixed declarations and code
eggtrayicon.c:311: error: 'EggTrayIcon' has no member named 'manager_window'
eggtrayicon.c:311: error: 'None' undeclared (first use in this function)
eggtrayicon.c:314: error: 'type' undeclared (first use in this function)
eggtrayicon.c:315: warning: implicit declaration of function 'XGetWindowProperty'
eggtrayicon.c:315: warning: nested extern declaration of 'XGetWindowProperty'
eggtrayicon.c:316: error: 'EggTrayIcon' has no member named 'manager_window'
eggtrayicon.c:317: error: 'EggTrayIcon' has no member named 'orientation_atom'
eggtrayicon.c:319: error: expected ')' before numeric constant
eggtrayicon.c:324: error: 'Success' undeclared (first use in this function)
eggtrayicon.c:327: error: expected ')' before numeric constant
eggtrayicon.c:344: warning: implicit declaration of function 'XFree'
eggtrayicon.c:344: warning: nested extern declaration of 'XFree'
eggtrayicon.c: In function 'egg_tray_icon_get_visual_property':
eggtrayicon.c:352: error: 'Display' undeclared (first use in this function)
eggtrayicon.c:352: error: 'xdisplay' undeclared (first use in this function)
eggtrayicon.c:354: error: 'Atom' undeclared (first use in this function)
eggtrayicon.c:354: error: expected ';' before 'type'
eggtrayicon.c:355: warning: ISO C90 forbids mixed declarations and code
eggtrayicon.c:365: error: 'EggTrayIcon' has no member named 'manager_window'
eggtrayicon.c:365: error: 'None' undeclared (first use in this function)
eggtrayicon.c:368: error: 'type' undeclared (first use in this function)
eggtrayicon.c:370: error: 'EggTrayIcon' has no member named 'manager_window'
eggtrayicon.c:371: error: 'EggTrayIcon' has no member named 'visual_atom'
eggtrayicon.c:373: error: expected ')' before numeric constant
eggtrayicon.c:380: error: 'Success' undeclared (first use in this function)
eggtrayicon.c:381: error: expected ')' before numeric constant
eggtrayicon.c:383: error: 'VisualID' undeclared (first use in this function)
eggtrayicon.c:383: error: expected ';' before 'visual_id'
eggtrayicon.c:384: warning: implicit declaration of function 'gdk_x11_screen_lookup_visual'
eggtrayicon.c:384: warning: nested extern declaration of 'gdk_x11_screen_lookup_visual'
eggtrayicon.c:384: error: 'visual_id' undeclared (first use in this function)
eggtrayicon.c:384: warning: assignment makes pointer from integer without a cast
eggtrayicon.c:387: error: 'EggTrayIcon' has no member named 'manager_visual'
eggtrayicon.c:388: error: 'EggTrayIcon' has no member named 'manager_visual_rgba'
eggtrayicon.c:393: error: 'EggTrayIcon' has no member named 'manager_visual_rgba'
eggtrayicon.c: In function 'egg_tray_icon_manager_filter':
eggtrayicon.c:403: error: 'XEvent' undeclared (first use in this function)
eggtrayicon.c:403: error: 'xev' undeclared (first use in this function)
eggtrayicon.c:403: error: expected expression before ')' token
eggtrayicon.c:405: error: 'ClientMessage' undeclared (first use in this function)
eggtrayicon.c:406: error: 'EggTrayIcon' has no member named 'manager_atom'
eggtrayicon.c:407: error: 'EggTrayIcon' has no member named 'selection_atom'
eggtrayicon.c:411: error: 'EggTrayIcon' has no member named 'manager_window'
eggtrayicon.c:413: error: 'PropertyNotify' undeclared (first use in this function)
eggtrayicon.c:414: error: 'EggTrayIcon' has no member named 'orientation_atom'
eggtrayicon.c:418: error: 'DestroyNotify' undeclared (first use in this function)
eggtrayicon.c: At top level:
eggtrayicon.c:430: error: expected declaration specifiers or '...' before 'Window'
eggtrayicon.c: In function 'egg_tray_icon_send_manager_message':
eggtrayicon.c:435: error: 'XClientMessageEvent' undeclared (first use in this function)
eggtrayicon.c:435: error: expected ';' before 'ev'
eggtrayicon.c:436: error: 'Display' undeclared (first use in this function)
eggtrayicon.c:436: error: 'display' undeclared (first use in this function)
eggtrayicon.c:438: error: 'ev' undeclared (first use in this function)
eggtrayicon.c:439: error: 'ClientMessage' undeclared (first use in this function)
eggtrayicon.c:440: error: 'window' undeclared (first use in this function)
eggtrayicon.c:441: error: 'EggTrayIcon' has no member named 'system_tray_opcode_atom'
eggtrayicon.c:443: warning: implicit declaration of function 'gdk_x11_get_server_time'
eggtrayicon.c:443: warning: nested extern declaration of 'gdk_x11_get_server_time'
eggtrayicon.c:452: warning: implicit declaration of function 'XSendEvent'
eggtrayicon.c:452: warning: nested extern declaration of 'XSendEvent'
eggtrayicon.c:453: error: 'EggTrayIcon' has no member named 'manager_window'
eggtrayicon.c:453: error: 'False' undeclared (first use in this function)
eggtrayicon.c:453: error: 'NoEventMask' undeclared (first use in this function)
eggtrayicon.c:453: error: 'XEvent' undeclared (first use in this function)
eggtrayicon.c:453: error: expected expression before ')' token
eggtrayicon.c: In function 'egg_tray_icon_send_dock_request':
eggtrayicon.c:463: error: 'EggTrayIcon' has no member named 'manager_window'
eggtrayicon.c:465: error: too many arguments to function 'egg_tray_icon_send_manager_message'
eggtrayicon.c: In function 'egg_tray_icon_update_manager_window':
eggtrayicon.c:474: error: 'Display' undeclared (first use in this function)
eggtrayicon.c:474: error: 'xdisplay' undeclared (first use in this function)
eggtrayicon.c:476: error: 'EggTrayIcon' has no member named 'manager_window'
eggtrayicon.c:476: error: 'None' undeclared (first use in this function)
eggtrayicon.c:480: warning: implicit declaration of function 'XGrabServer'
eggtrayicon.c:480: warning: nested extern declaration of 'XGrabServer'
eggtrayicon.c:482: error: 'EggTrayIcon' has no member named 'manager_window'
eggtrayicon.c:482: warning: implicit declaration of function 'XGetSelectionOwner'
eggtrayicon.c:482: warning: nested extern declaration of 'XGetSelectionOwner'
eggtrayicon.c:483: error: 'EggTrayIcon' has no member named 'selection_atom'
eggtrayicon.c:485: error: 'EggTrayIcon' has no member named 'manager_window'
eggtrayicon.c:486: warning: implicit declaration of function 'XSelectInput'
eggtrayicon.c:486: warning: nested extern declaration of 'XSelectInput'
eggtrayicon.c:487: error: 'EggTrayIcon' has no member named 'manager_window'
eggtrayicon.c:487: error: 'StructureNotifyMask' undeclared (first use in this function)
eggtrayicon.c:487: error: 'PropertyChangeMask' undeclared (first use in this function)
eggtrayicon.c:489: warning: implicit declaration of function 'XUngrabServer'
eggtrayicon.c:489: warning: nested extern declaration of 'XUngrabServer'
eggtrayicon.c:490: warning: implicit declaration of function 'XFlush'
eggtrayicon.c:490: warning: nested extern declaration of 'XFlush'
eggtrayicon.c:492: error: 'EggTrayIcon' has no member named 'manager_window'
eggtrayicon.c:497: error: 'EggTrayIcon' has no member named 'manager_window'
eggtrayicon.c:506: error: 'EggTrayIcon' has no member named 'manager_visual'
eggtrayicon.c:508: error: 'EggTrayIcon' has no member named 'manager_visual'
eggtrayicon.c: In function 'egg_tray_icon_manager_window_destroyed':
eggtrayicon.c:529: error: 'EggTrayIcon' has no member named 'manager_window'
eggtrayicon.c:529: error: 'None' undeclared (first use in this function)
eggtrayicon.c: In function 'egg_tray_icon_set_colormap':
eggtrayicon.c:556: error: 'EggTrayIcon' has no member named 'manager_visual'
eggtrayicon.c: In function 'egg_tray_icon_realize':
eggtrayicon.c:598: error: 'EggTrayIcon' has no member named 'manager_visual_rgba'
eggtrayicon.c:610: error: 'EggTrayIcon' has no member named 'manager_window'
eggtrayicon.c:610: error: 'None' undeclared (first use in this function)
eggtrayicon.c: In function 'egg_tray_icon_send_message':
eggtrayicon.c:632: error: 'Display' undeclared (first use in this function)
eggtrayicon.c:632: error: 'xdisplay' undeclared (first use in this function)
eggtrayicon.c:638: error: 'EggTrayIcon' has no member named 'manager_window'
eggtrayicon.c:638: error: 'None' undeclared (first use in this function)
eggtrayicon.c:648: error: 'Window' undeclared (first use in this function)
eggtrayicon.c:648: error: expected ')' before 'gtk_plug_get_id'
eggtrayicon.c:649: error: too few arguments to function 'egg_tray_icon_send_manager_message'
eggtrayicon.c:656: error: 'XClientMessageEvent' undeclared (first use in this function)
eggtrayicon.c:656: error: expected ';' before 'ev'
eggtrayicon.c:658: error: 'ev' undeclared (first use in this function)
eggtrayicon.c:659: error: 'ClientMessage' undeclared (first use in this function)
eggtrayicon.c:660: error: expected ';' before 'gtk_plug_get_id'
eggtrayicon.c:663: error: 'False' undeclared (first use in this function)
eggtrayicon.c:677: error: 'EggTrayIcon' has no member named 'manager_window'
eggtrayicon.c:677: error: 'StructureNotifyMask' undeclared (first use in this function)
eggtrayicon.c:677: error: 'XEvent' undeclared (first use in this function)
eggtrayicon.c:677: error: expected expression before ')' token
eggtrayicon.c: In function 'egg_tray_icon_cancel_message':
eggtrayicon.c:692: error: 'Window' undeclared (first use in this function)
eggtrayicon.c:692: error: expected ')' before 'gtk_plug_get_id'
eggtrayicon.c:693: error: too few arguments to function 'egg_tray_icon_send_manager_message'
{standard input}:130:non-relocatable subtraction expression, "_egg_tray_icon_expose" minus "L00000000002$pb"
{standard input}:130:symbol: "_egg_tray_icon_expose" can't be undefined in a subtraction expression
{standard input}:127:non-relocatable subtraction expression, "_egg_tray_icon_delete" minus "L00000000002$pb"
{standard input}:127:symbol: "_egg_tray_icon_delete" can't be undefined in a subtraction expression
{standard input}:124:non-relocatable subtraction expression, "_egg_tray_icon_style_set" minus "L00000000002$pb"
{standard input}:124:symbol: "_egg_tray_icon_style_set" can't be undefined in a subtraction expression
{standard input}:121:non-relocatable subtraction expression, "_egg_tray_icon_realize" minus "L00000000002$pb"
{standard input}:121:symbol: "_egg_tray_icon_realize" can't be undefined in a subtraction expression
{standard input}:118:non-relocatable subtraction expression, "_egg_tray_icon_dispose" minus "L00000000002$pb"
{standard input}:118:symbol: "_egg_tray_icon_dispose" can't be undefined in a subtraction expression
{standard input}:115:non-relocatable subtraction expression, "_egg_tray_icon_constructed" minus "L00000000002$pb"
{standard input}:115:symbol: "_egg_tray_icon_constructed" can't be undefined in a subtraction expression
{standard input}:112:non-relocatable subtraction expression, "_egg_tray_icon_get_property" minus "L00000000002$pb"
{standard input}:112:symbol: "_egg_tray_icon_get_property" can't be undefined in a subtraction expression
make[1]: *** [uim_toolbar_gtk_systray-eggtrayicon.o] Error 1
make: *** [all-recursive] Error 1
*** Error during phase build of uim: ########## Error running make   *** [1/1]