[Bug ld/26328] New: Compilation warning when building ld v2.35 with MinGW

[eliz at gnu dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=26328

            Bug ID: 26328
           Summary: Compilation warning when building ld v2.35 with MinGW
           Product: binutils
           Version: 2.35
            Status: NEW
          Severity: minor
          Priority: P2
         Component: ld
          Assignee: unassigned at sourceware dot org
          Reporter: eliz at gnu dot org
  Target Milestone: ---

Building GNU Binutils 2.35 with mingw.org's MinGW (GCC 9.2.0) produces the
following warning in the 'ld' directory:

     mingw32-gcc -DHAVE_CONFIG_H -I. -I../../binutils-2.35/ld  -I.
-I../../binutils-2.35/ld -I../bfd -I../../binutils-2.35/ld/../bfd
-I../../binutils-2.35/ld/../include    -O2 -gdwarf-4 -g3 -D__USE_MINGW_ACCESS 
-DLOCALEDIR="\"/mingw/share/locale\""   -W -Wall -Wstrict-prototypes
-Wmissing-prototypes -Wshadow -Wstack-usage=262144 -Wno-format
-DELF_LIST_OPTIONS=FALSE  -DELF_SHLIB_LIST_OPTIONS=FALSE 
-DELF_PLT_UNWIND_LIST_OPTIONS=FALSE -O2 -gdwarf-4 -g3 -D__USE_MINGW_ACCESS -MT
lexsup.o -MD -MP -MF .deps/lexsup.Tpo -c -o lexsup.o
../../binutils-2.35/ld/lexsup.c

     ../../binutils-2.35/ld/lexsup.c: In function 'parse_args':
     ../../binutils-2.35/ld/lexsup.c:1663:12: warning: implicit declaration of
function 'asprintf'; did you mean 'xasprintf'?
[-Wimplicit-function-declaration]
      1663 |        if (asprintf (&new_name, "%s/%s.map",
           |            ^~~~~~~~
           |            xasprintf

This is because the MinGW system headers don't provide a declaration of
'asprintf', and to get libiberty's prototype visible, libiberty.h needs to see
HAVE_DECL_ASPRINTF defined to zero.

So the solution would be to add a test for 'asprintf' being declared to
ld/configure.

-- 
You are receiving this mail because:
You are on the CC list for the bug.