failing to compile latest mesa from git

Hello,
when trying to build latest mesa-xlib from git I get the following error:

| builtin_function.cpp:15487:2: error: #error builtins profile
140_frag failed to compile
| builtin_function.cpp:15488:2: error: #error builtins profile
140_vert failed to compile
| builtin_function.cpp:16095:2: error: #error builtins profile
OES_EGL_image_external_frag failed to compile
| builtin_function.cpp:16096:2: error: #error builtins profile
OES_EGL_image_external_vert failed to compile
| builtin_function.cpp: In function 'void
_mesa_glsl_initialize_functions(_mesa_glsl_parse_state*)':
| builtin_function.cpp:16264:26: error: 'prototypes_for_140_frag' was
not declared in this scope
| builtin_function.cpp:16265:26: error: 'functions_for_140_frag' was
not declared in this scope
| builtin_function.cpp:16271:26: error: 'prototypes_for_140_vert' was
not declared in this scope
| builtin_function.cpp:16272:26: error: 'functions_for_140_vert' was
not declared in this scope
| builtin_function.cpp:16320:26: error:
'prototypes_for_OES_EGL_image_external_frag' was not declared in this
scope
| builtin_function.cpp:16321:26: error:
'functions_for_OES_EGL_image_external_frag' was not declared in this
scope

As configure options, amongst other options, I have: --enable-glx,
--enable-gles2 --enable-xlib-glx

Any clue to why these are not declared?