https://sourceware.org/bugzilla/show_bug.cgi?id=34486
Bug ID: 34486
Summary: opcodes fails to compile with mingw.org's MinGW
Product: binutils
Version: 2.47
Status: NEW
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: eliz at gnu dot org
Target Milestone: ---
Compiling Binutils 2.47 with mingw.org's MinGW fails in the opcodes directory:
CC i386-dis.lo
../../binutils-2.47/opcodes/i386-dis.c: In function 'oappend_immediate':
../../binutils-2.47/opcodes/i386-dis.c:11714:7: error: implicit
declaration of function 'asprintf'; did you mean 'xasprintf'?
[-Werror=implicit-function-declaration]
11714 | if (asprintf (& annotation, "[%s]", sym->name) > 0)
| ^~~~~~~~
| xasprintf
cc1.exe: all warnings being treated as errors
Makefile:1076: recipe for target `i386-dis.lo' failed
make[4]: *** [i386-dis.lo] Error 1
mingw.org's MinGW doesn't have asprintf. libiberty has a replacement, but its
declaration in libiberty.h is guarded:
#if defined(HAVE_DECL_ASPRINTF) && !HAVE_DECL_ASPRINTF
/* Like sprintf but provides a pointer to malloc'd storage, which must
be freed by the caller. */
extern int asprintf (char **, const char *, ...) ATTRIBUTE_PRINTF_2;
#endif
However, the configure script in the opcodes directory doesn't include the test
for HAVE_DECL_ASPRINTF, and so the prototype remains invisible to the compiler.
The solution is to include a test for asprintf's declaration in opcodes'
configure script, or perhaps modify libiberty.h to also expose the prototype if
HAVE_DECL_ASPRINTF is undefined.
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