The version of rust-demangle.c included with Binutils 2.37 doesn't compile with MinGW:
mingw32-gcc -c -DHAVE_CONFIG_H -O2 -gdwarf-4 -g3 -I. -I../../binutils-2.37/libiberty/../include -W -Wall -Wwrite-strings -Wc++-compat -Wstrict-prototypes -Wshadow=local -pedantic -D_GNU_SOURCE ../../binutils-2.37/libiberty/rust-demangle.c -o rust-demangle.o ../../binutils-2.37/libiberty/rust-demangle.c:84:3: error: unknown type name 'uint' 84 | uint recursion; | ^~~~ ../../binutils-2.37/libiberty/rust-demangle.c: In function 'demangle_path': ../../binutils-2.37/libiberty/rust-demangle.c:87:37: error: 'uint' undeclared (first use in this function); did you mean 'int'? 87 | #define RUST_NO_RECURSION_LIMIT ((uint) -1) | ^~~~ ../../binutils-2.37/libiberty/rust-demangle.c:686:25: note: in expansion of macro 'RUST_NO_RECURSION_LIMIT' 686 | if (rdm->recursion != RUST_NO_RECURSION_LIMIT) | ^~~~~~~~~~~~~~~~~~~~~~~ ../../binutils-2.37/libiberty/rust-demangle.c:87:37: note: each undeclared identifier is reported only once for each function it appears in 87 | #define RUST_NO_RECURSION_LIMIT ((uint) -1) | ^~~~ ../../binutils-2.37/libiberty/rust-demangle.c:686:25: note: in expansion of macro 'RUST_NO_RECURSION_LIMIT' 686 | if (rdm->recursion != RUST_NO_RECURSION_LIMIT) | ^~~~~~~~~~~~~~~~~~~~~~~ ../../binutils-2.37/libiberty/rust-demangle.c: In function 'rust_demangle_callback': ../../binutils-2.37/libiberty/rust-demangle.c:87:37: error: 'uint' undeclared (first use in this function); did you mean 'int'? 87 | #define RUST_NO_RECURSION_LIMIT ((uint) -1) | ^~~~ ../../binutils-2.37/libiberty/rust-demangle.c:1347:55: note: in expansion of macro 'RUST_NO_RECURSION_LIMIT' 1347 | rdm.recursion = (options & DMGL_NO_RECURSE_LIMIT) ? RUST_NO_RECURSION_LIMIT : 0; | ^~~~~~~~~~~~~~~~~~~~~~~ This is because the data type 'uint' is not defined in the MinGW headers. I used uint32_t instead, and it compiled OK.