can not build for windows & clang

[calvin2021y]

src/ebtree.h:492:10: error: invalid operand for instruction
        __asm__("bsrq %1,%0" : "+r" (r) : "rm" (x));
                ^
<inline asm>:1:17: note: instantiated into assembly here
        bsrq -16(%rbp),%eax
                       ^~~~
32 warnings generated.
26 warnings generated.
32 warnings and 1 error generated.
make: *** [Makefile:34: obj/static-eb64tree.o] Error 1
make: *** Waiting for unfinished jobs....
src/ebtree.h:492:10: error: invalid operand for instruction
        __asm__("bsrq %1,%0" : "+r" (r) : "rm" (x));
                ^
<inline asm>:1:17: note: instantiated into assembly here
        bsrq -16(%rbp),%eax
                       ^~~~
33 warnings and 1 error generated.

[calvin2021y]

windows warning:

ebtree/src/ebtree.h:467:26: error: cannot assign to variable 'x' with const-qualified type 'const int'
        if (x & 0xf0f0f0f0) { x &= 0xf0f0f0f0; r += 0x04;}
                              ~ ^
ebtree/src/ebtree.h:457:35: note: variable 'x' declared const here
static inline int flsnz(const int x)
                        ~~~~~~~~~~^
/opt/d/C/ebtree/src/ebtree.h:468:26: error: cannot assign to variable 'x' with const-qualified type 'const int'
        if (x & 0xcccccccc) { x &= 0xcccccccc; r += 0x02;}
                              ~ ^
ebtree/src/ebtree.h:457:35: note: variable 'x' declared const here
static inline int flsnz(const int x)
                        ~~~~~~~~~~^
ebtree/src/ebtree.h:469:26: error: cannot assign to variable 'x' with const-qualified type 'const int'
        if (x & 0xaaaaaaaa) { x &= 0xaaaaaaaa; r += 0x01;}

[calvin2021y]

windows clang:

ebtree/src/eb128tree.c:1126:12: warning: cast to smaller integer type 'long' from 'struct eb_root *' [-Wpointer-to-int-cast]
                                return container_of(eb_untag(troot, EB_LEAF),
                                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ebtree/src/ebtree.h:276:68: note: expanded from macro 'container_of'
#define container_of(ptr, type, name) ((type *)(((void *)(ptr)) - ((long)&((type *)0)->name)))
                                                                   ^~~~~~~~~~~~~~~~~~~~~~~~
ebtree/src/eb128tree.c:1141:12: warning: cast to smaller integer type 'long' from 'struct eb_node *' [-Wpointer-to-int-cast]
                                return eb128_entry(eb_walk_down(troot, EB_LEFT), struct eb128_node, node);
                                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ebtree/src/eb128tree.c:497:40: note: expanded from macro 'eb128_entry'
#define eb128_entry(ptr, type, member) container_of(ptr, type, member)
                                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ebtree/src/ebtree.h:276:68: note: expanded from macro 'container_of'
#define container_of(ptr, type, name) ((type *)(((void *)(ptr)) - ((long)&((type *)0)->name)))