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libctf: Add configure check for asprintf (for MinGW)

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This commit fixes a compilation warning when compiling libctf
on MinGW:

    libctf/ctf-dump.c:118:8: warning: implicit declaration of function
    'asprintf'; did you mean 'vasprintf'? [-Wimplicit-function-declaration]

	 if (asprintf (&bit, " %lx: [slice 0x%x:0x%x]",
	     ^~~~~~~~
	     vasprintf

MinGW doesn't provide that function, so we depend on the one provided
by libiberty. However, the declaration is guarded by HAVE_DECL_ASPRINTF,
which we do not have in libctf's config.h.

libctf/ChangeLog:

	PR binutils/25155:
	* configure.ac: Add AC_CHECK_DECLS([asprintf]).
	* configure, config.h.in: Regenerate.
This commit is contained in:
Eli Zaretskii
2020-01-05 09:50:27 +04:00
committed by Joel Brobecker
parent 7fddfece82
commit 3a657c600b
4 changed files with 72 additions and 2 deletions
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2
libctf/configure.ac
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@@ -99,6 +99,8 @@ AC_C_BIGENDIAN
AC_CHECK_HEADERS(byteswap.h endian.h)
AC_CHECK_FUNCS(pread)
AC_CHECK_DECLS([asprintf])
dnl Check for qsort_r. (Taken from gnulib.)
AC_CHECK_FUNCS_ONCE([qsort_r])
if test $ac_cv_func_qsort_r = yes; then