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ad118caa9f
(Not tested on any such platforms, since I don't have access to any at the moment. Testing encouraged.) libctf/ * configure.ac: Check for O_CLOEXEC. * ctf-decls.h (O_CLOEXEC): Define (to 0), if need be. * config.h.in: Regenerate.
155 lines
5.5 KiB
Plaintext
155 lines
5.5 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 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_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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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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ACX_PROG_CC_WARNING_OPTS([-Wall], [ac_libctf_warn_cflags])
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AC_FUNC_MMAP
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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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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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AC_CONFIG_FILES(Makefile)
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AC_CONFIG_HEADERS(config.h)
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AC_OUTPUT
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