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