mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-15 04:31:49 +08:00
3a657c600b
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.
223 lines
7.6 KiB
Plaintext
223 lines
7.6 KiB
Plaintext
dnl -*- Autoconf -*-
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dnl Process this file with autoconf to produce a configure script.
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dnl
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dnl Copyright (C) 2019-2020 Free Software Foundation, Inc.
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dnl
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dnl This file is free software; you can redistribute it and/or modify
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dnl it under the terms of the GNU General Public License as published by
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dnl the Free Software Foundation; either version 2 of the License, or
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dnl (at your option) any later version.
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dnl
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dnl This program is distributed in the hope that it will be useful,
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dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
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dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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dnl GNU General Public License for more details.
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dnl
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dnl You should have received a copy of the GNU General Public License
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dnl along with this program; see the file COPYING. If not see
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dnl <http://www.gnu.org/licenses/>.
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dnl
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AC_PREREQ(2.64)
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AC_INIT([libctf library], 1.2.0-pre)
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AC_CONFIG_SRCDIR(ctf-impl.h)
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AC_CONFIG_MACRO_DIR(../config)
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AC_CONFIG_MACRO_DIR(../bfd)
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AC_USE_SYSTEM_EXTENSIONS
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AM_INIT_AUTOMAKE
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# Checks for programs.
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AC_PROG_MAKE_SET
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AC_PROG_CC
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AC_PROG_RANLIB
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AM_PROG_AR
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dnl Default to a non shared library. This may be overridden by the
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dnl configure option --enable-shared.
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AC_DISABLE_SHARED
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LT_INIT
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AC_SYS_LARGEFILE
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MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
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AC_CHECK_PROGS([ACLOCAL], [aclocal], [$MISSING aclocal])
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AC_CHECK_PROGS([AUTOCONF], [autoconf], [$MISSING autoconf])
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AC_CHECK_PROGS([AUTOHEADER], [autoheader], [$MISSING autoheader])
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# Figure out what compiler warnings we can enable.
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# See config/warnings.m4 for details.
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ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wno-narrowing -Wwrite-strings \
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-Wmissing-format-attribute], [warn])
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ACX_PROG_CC_WARNING_OPTS([-Wstrict-prototypes -Wmissing-prototypes \
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-Wold-style-definition], [c_warn])
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ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long])
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# Only enable with --enable-werror-always until existing warnings are
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# corrected.
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ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual])
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AM_MAINTAINER_MODE
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AM_INSTALL_LIBBFD
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ACX_PROG_CC_WARNING_OPTS([-Wall], [ac_libctf_warn_cflags])
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AC_FUNC_MMAP
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# Needed for BFD capability checks.
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AC_SEARCH_LIBS(dlopen, dl)
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AM_ZLIB
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# Similar to GDB_AC_CHECK_BFD.
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OLD_CFLAGS=$CFLAGS
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OLD_LDFLAGS=$LDFLAGS
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OLD_LIBS=$LIBS
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# Put the old CFLAGS/LDFLAGS last, in case the user's (C|LD)FLAGS
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# points somewhere with bfd, with -I/foo/lib and -L/foo/lib. We
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# always want our bfd.
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CFLAGS="-I${srcdir}/../include -I../bfd -I${srcdir}/../bfd $CFLAGS"
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ZLIBDIR=`echo $zlibdir | sed 's,\$(top_builddir)/,,g'`
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LDFLAGS="-L../bfd -L../libiberty $ZLIBDIR $LDFLAGS"
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intl=`echo $LIBINTL | sed 's,${top_builddir}/,,g'`
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LIBS="-lbfd -liberty -lz $intl $LIBS"
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AC_CACHE_CHECK([for ELF support in BFD], ac_cv_libctf_bfd_elf,
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[AC_TRY_LINK([#include <stdlib.h>
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#include "bfd.h"
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#include "elf-bfd.h"],
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[(void) bfd_section_from_elf_index (NULL, 0);
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return 0;],
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[ac_cv_libctf_bfd_elf=yes],
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[ac_cv_libctf_bfd_elf=no])])
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CFLAGS=$OLD_CFLAGS
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LDFLAGS=$OLD_LDFLAGS
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LIBS=$OLD_LIBS
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if test $ac_cv_libctf_bfd_elf = yes; then
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AC_DEFINE([HAVE_BFD_ELF], 1,
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[Whether libbfd was configured for an ELF target.])
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fi
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AC_C_BIGENDIAN
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AC_CHECK_HEADERS(byteswap.h endian.h)
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AC_CHECK_FUNCS(pread)
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AC_CHECK_DECLS([asprintf])
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dnl Check for qsort_r. (Taken from gnulib.)
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AC_CHECK_FUNCS_ONCE([qsort_r])
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if test $ac_cv_func_qsort_r = yes; then
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AC_CACHE_CHECK([for qsort_r signature], [ac_cv_libctf_qsort_r_signature],
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[AC_LINK_IFELSE(
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[AC_LANG_PROGRAM([[#undef qsort_r
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#include <stdlib.h>
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void qsort_r (void *, size_t, size_t,
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int (*) (void const *, void const *,
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void *),
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void *);
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void (*p) (void *, size_t, size_t,
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int (*) (void const *, void const *,
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void *),
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void *) = qsort_r;
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]])],
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[ac_cv_libctf_qsort_r_signature=GNU],
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[AC_LINK_IFELSE(
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[AC_LANG_PROGRAM([[#undef qsort_r
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#include <stdlib.h>
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void qsort_r (void *, size_t, size_t, void *,
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int (*) (void *,
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void const *,
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void const *));
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void (*p) (void *, size_t, size_t, void *,
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int (*) (void *, void const *,
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void const *)) = qsort_r;
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]])],
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[ac_cv_libctf_qsort_r_signature=BSD],
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[ac_cv_libctf_qsort_r_signature=unknown])])])
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fi
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case x$ac_cv_libctf_qsort_r_signature in
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xGNU) AC_DEFINE([HAVE_QSORT_R_ARG_LAST], 1,
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[Whether a qsort_r exists with a void *arg as its last arg.]);;
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xBSD) AC_DEFINE([HAVE_QSORT_R_COMPAR_LAST], 1,
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[Whether a qsort_r exists with the compar function as its last arg.]);;
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*) ac_cv_libctf_qsort_r_signature=unknown;;
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esac
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AM_CONDITIONAL(NEED_CTF_QSORT_R, test "${ac_cv_libctf_qsort_r_signature}" = unknown)
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AC_CACHE_CHECK([for O_CLOEXEC], [ac_cv_libctf_macro_O_CLOEXEC],
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[AC_LINK_IFELSE(
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[AC_LANG_PROGRAM([[#include <fcntl.h>
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#ifndef O_CLOEXEC
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choke me;
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#endif
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]],
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[[return O_CLOEXEC;]])],
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[ac_cv_libctf_macro_O_CLOEXEC=yes],
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[ac_cv_libctf_macro_O_CLOEXEC=no])])
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if test $ac_cv_libctf_macro_O_CLOEXEC = yes; then
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AC_DEFINE([HAVE_O_CLOEXEC], 1,
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[Whether the platform has a definition of O_CLOEXEC.])
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fi
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# Horrible hacks to build DLLs on Windows and a shared library elsewhere.
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SHARED_LIBADD=
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SHARED_LDFLAGS=
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BFD_LIBADD=
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BFD_DEPENDENCIES=
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if test "$enable_shared" = "yes"; then
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# When building a shared libctf, link against the pic version of libiberty
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# so that apps that use libctf won't need libiberty just to satisfy any
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# libctf references.
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# We can't do that if a pic libiberty is unavailable since including non-pic
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# code would insert text relocations into libctf.
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# Note that linking against libbfd as we do here, which is itself linked
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# against libiberty, may not satisfy all the libctf libiberty references
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# since libbfd may not pull in the entirety of libiberty.
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changequote(,)dnl
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x=`sed -n -e 's/^[ ]*PICFLAG[ ]*=[ ]*//p' < ../libiberty/Makefile | sed -n '$p'`
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changequote([,])dnl
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if test -n "$x"; then
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SHARED_LIBADD="-L`pwd`/../libiberty/pic -liberty"
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fi
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case "${host}" in
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# More hacks to build DLLs on Windows.
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*-*-cygwin*)
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SHARED_LDFLAGS="-no-undefined"
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SHARED_LIBADD="-L`pwd`/../libiberty -liberty -L`pwd`/../intl -lintl -lcygwin"
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BFD_LIBADD="-L`pwd`/../bfd -lbfd"
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;;
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*-*-darwin*)
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BFD_LIBADD="-Wl,`pwd`/../bfd/.libs/libbfd.dylib"
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BFD_DEPENDENCIES="../bfd/libbfd.la"
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;;
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*)
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case "$host_vendor" in
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hp)
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BFD_LIBADD="-Wl,`pwd`/../bfd/.libs/libbfd.sl"
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;;
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*)
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BFD_LIBADD="-Wl,`pwd`/../bfd/.libs/libbfd.so"
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;;
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esac
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BFD_DEPENDENCIES="../bfd/libbfd.la"
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;;
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esac
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fi
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AC_SUBST(SHARED_LDFLAGS)
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AC_SUBST(SHARED_LIBADD)
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AC_SUBST(BFD_LIBADD)
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AC_SUBST(BFD_DEPENDENCIES)
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# Use a version script, if possible, or an -export-symbols-regex otherwise.
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VERSION_FLAGS='-export-symbols-regex ctf_.*'
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if $LD --help 2>&1 | grep -- --version-script >/dev/null; then
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VERSION_FLAGS="-Wl,--version-script='$srcdir/libctf.ver'"
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fi
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AC_SUBST(VERSION_FLAGS)
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AC_CONFIG_FILES(Makefile)
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AC_CONFIG_HEADERS(config.h)
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AC_OUTPUT
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