AC_PREREQ(2.61)

AC_INIT(rpm, 4.14.2, rpm-maint@lists.rpm.org)

AC_CONFIG_SRCDIR([rpmqv.c])

AC_CONFIG_HEADERS([config.h])

AC_CONFIG_MACRO_DIR([m4])

AM_INIT_AUTOMAKE([1.10 foreign tar-pax dist-bzip2 subdir-objects nostdinc])

dnl Allow silent build on automake versions that support it

m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES])

AC_CONFIG_TESTDIR(tests)

AC_USE_SYSTEM_EXTENSIONS

AC_DISABLE_STATIC

PKG_PROG_PKG_CONFIG

dnl Checks for programs.

AC_PROG_CXX

AC_PROG_AWK

AC_PROG_CC

AC_PROG_CPP

AC_PROG_INSTALL

AC_PROG_LN_S

AC_PROG_MAKE_SET

AC_PROG_LIBTOOL

AC_PROG_YACC

AC_SUBST(__CC, $CC)

AC_PROG_CC_C99

if test "$ac_cv_prog_cc_c99" = no; then

    AC_MSG_ERROR([ISO C99 capable compiler required])

fi

AS=${AS-as}

AC_SUBST(AS)

if test "$GCC" = yes; then

    cflags_to_try="-fno-strict-aliasing -fstack-protector -Wempty-body"

    AC_MSG_CHECKING([supported compiler flags])

    old_cflags=$CFLAGS

    echo

    for flag in $cflags_to_try; do

        CFLAGS="$CFLAGS $flag -Werror"

        AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[#include <alloca.h>

						alloca(100);]])],[

                echo "   $flag"

                RPMCFLAGS="$RPMCFLAGS $flag"

        ],[])

        CFLAGS=$old_cflags

    done

    RPMCFLAGS="-fPIC -DPIC -D_REENTRANT -Wall -Wpointer-arith -Wmissing-prototypes -Wstrict-prototypes $RPMCFLAGS"

fi

AC_SUBST(RPMCFLAGS)

AC_SYS_LARGEFILE

dnl

dnl look for POSIX chmod attributes

dnl

AC_MSG_CHECKING(POSIX chmod)

touch foo.chmodtest

chmod 744 foo.chmodtest

chmod +X foo.chmodtest 2>/dev/null

a=`ls -l foo.chmodtest | awk '{print substr($1,1,10)}'`

rm -f foo.chmodtest

if test "$a" = "-rwxr-xr-x"; then

    AC_MSG_RESULT(yes)

    FIXPERMS=a+rX,u+w,g-w,o-w 

else

    AC_MSG_RESULT(no (tell your OS vendor about GNU fileutils))

    FIXPERMS=a+r,u+w,g-w,o-w 

fi

AC_SUBST(FIXPERMS)

dnl AM_DISABLE_SHARED

AM_PROG_LIBTOOL

AC_CHECK_TOOL(AR, ar, :)

dnl

dnl use defaults if cross-compiling, otherwise use the default path.

dnl

if test "$cross_compiling" = "yes"; then

    MYPATH=":"

else

    MYPATH=$PATH

fi

dnl

dnl Find some common programs

dnl

AC_PATH_PROGS(__7ZIP, [7zip 7za 7z], /usr/bin/7za, $MYPATH)

AC_PATH_PROG(__BZIP2, bzip2, /usr/bin/bzip2, $MYPATH)

AC_PATH_PROG(__CAT, cat, /bin/cat, $MYPATH)

AC_PATH_PROG(__CHGRP, chgrp, /bin/chgrp, $MYPATH)

AC_PATH_PROG(__CHMOD, chmod, /bin/chmod, $MYPATH)

AC_PATH_PROG(__CHOWN, chown, /bin/chown, $MYPATH)

AC_PATH_PROG(__CP, cp, /bin/cp, $MYPATH)

AC_PATH_PROG(__CPIO, cpio, /bin/cpio, $MYPATH)

AC_PATH_PROG(__CURL, curl, /usr/bin/curl, $MYPATH)

AC_PATH_PROG(__FILE, file, /usr/bin/file, $MYPATH)

AC_PATH_PROGS(__GPG, gpg2 gpg, /usr/bin/gpg2, $MYPATH)

AC_PATH_PROG(__GREP, grep, /bin/grep, $MYPATH)

AC_PATH_PROG(__GZIP, gzip, /bin/gzip, $MYPATH)

AC_PATH_PROG(__UNZIP, unzip, /usr/bin/unzip, $MYPATH)

AC_PATH_PROG(__ID, id, /usr/bin/id, $MYPATH)

AC_PATH_PROG(__INSTALL, install, /usr/bin/install, $MYPATH)

AC_PATH_PROG(__LRZIP, lrzip, /usr/bin/lrzip, $MYPATH)

AC_PATH_PROG(__LZIP, lzip, /usr/bin/lzip, $MYPATH)

AC_PATH_PROG(__XZ, xz, /usr/bin/xz, $MYPATH)

AC_PATH_PROG(__GEM, gem, /usr/bin/gem, $MYPATH)

AC_PATH_PROG(__MAKE, make, /usr/bin/make, $MYPATH)

AC_PATH_PROG(__MKDIR, mkdir, /bin/mkdir, $MYPATH)

AC_PATH_PROG(__MV, mv, /bin/mv, $MYPATH)

AC_PATH_PROG(__PATCH, patch, /usr/bin/patch, $MYPATH)

AC_PATH_PROG(__RESTORECON, restorecon, /sbin/restorecon, $MYPATH)

AC_MSG_CHECKING(old version of patch)

    PATCHVERSION=`patch --version 2>&1`

    if test "$PATCHVERSION" = "Patch version 2.1"; then

	AC_DEFINE(HAVE_OLDPATCH_21, 1,

		[Define if the patch call you'll be using is 2.1 or older])

	AC_MSG_RESULT(patch older then 2.2 found)

    else

	AC_MSG_RESULT(patch later then 2.2 found)

    fi

AC_PATH_PROG(__PERL, perl, /usr/bin/perl, $MYPATH)

AC_PATH_PROG(__PGP, pgp, /usr/bin/pgp, $MYPATH)

AC_PATH_PROG(__PYTHON, python, /usr/bin/python, $MYPATH) 

AC_PATH_PROG(__RM, rm, /bin/rm, $MYPATH)

AC_PATH_PROG(__RSH, rsh, /usr/bin/rsh, $MYPATH)

AC_PATH_PROG(__SED, sed, /bin/sed, $MYPATH)

AC_PATH_PROG(__SEMODULE, semodule, /usr/bin/semodule, $MYPATH)

AC_PATH_PROG(__SSH, ssh, /usr/bin/ssh, $MYPATH)

AC_PATH_PROG(__TAR, tar, /bin/tar, $MYPATH)

AC_PATH_PROG(__ZSTD, zstd, /usr/bin/zstd, $MYPATH)

AC_PATH_PROG(__LD, ld, /usr/bin/ld, $MYPATH)

AC_PATH_PROG(__NM, nm, /usr/bin/nm, $MYPATH)

AC_PATH_PROG(__OBJCOPY, objcopy, /usr/bin/objcopy, $MYPATH)

AC_PATH_PROG(__OBJDUMP, objdump, /usr/bin/objdump, $MYPATH)

AC_PATH_PROG(__STRIP, strip, /usr/bin/strip, $MYPATH)

AC_PATH_PROG(__GIT, git, /usr/bin/git, $MYPATH)

AC_PATH_PROG(__HG, hg, /usr/bin/hg, $MYPATH)

AC_PATH_PROG(__BZR, bzr, /usr/bin/bzr, $MYPATH)

AC_PATH_PROG(__QUILT, quilt, /usr/bin/quilt, $MYPATH)

AC_PATH_PROG(__FAKECHROOT, fakechroot, no, $MYPATH)

AM_CONDITIONAL(HAVE_FAKECHROOT, [test "$__FAKECHROOT" != "no"])

dnl see if we have a mkdir that supports `-p' for rpmbuild's purposes

AC_PROG_MKDIR_P

if ! echo $MKDIR_P | grep -q mkdir; then 

  __MKDIR_P="`echo ${prefix}/lib/rpm/mkinstalldirs`"

else

  __MKDIR_P=$MKDIR_P

fi

AC_DEFINE_UNQUOTED(__MKDIR_P, "${__MKDIR_P}",

[A full path to a program, possibly with arguments, that will create a

   directory and all necessary parent directories, ala 'mkdir -p'])

AC_SUBST(__MKDIR_P)

#=================

# Check for zlib library. 

WITH_ZLIB_INCLUDE=

WITH_ZLIB_LIB=

AC_CHECK_HEADERS([zlib.h],[

  AS_IF([test -z "${WITH_ZLIB_LIB}"],[

    for zlib in z gz ; do

      AC_CHECK_LIB(${zlib}, gzread, 

	[WITH_ZLIB_LIB="-l${zlib}"; break])

    done

dnl zlib-1.0.4 has not gzseek

    AC_CHECK_LIB(${zlib}, gzseek, [AC_DEFINE(HAVE_GZSEEK, 1, [Define as 1 if your zlib has gzseek()])])

  ])

],[

  AC_MSG_ERROR([missing required header zlib.h])

])

AC_SUBST(WITH_ZLIB_INCLUDE)

AC_SUBST(WITH_ZLIB_LIB)

#=================

# Check for bzip2 library.

AC_CHECK_HEADERS([bzlib.h],[

  AC_CHECK_LIB(bz2, BZ2_bzread, [WITH_BZ2_LIB=-lbz2])

])

AC_SUBST(WITH_BZ2_LIB)

#=================

# Check for lzma library.

AC_CHECK_HEADERS([lzma.h],[

  AC_CHECK_LIB(lzma, lzma_easy_encoder, [WITH_LZMA_LIB=-llzma])

])

AC_SUBST(WITH_LZMA_LIB)

#=================

# Check for zstd.

AC_ARG_ENABLE([zstd],

              [AS_HELP_STRING([--enable-zstd=@<:@yes/no/auto@:>@],

                              [build without zstd support (default=auto)])],

              [enable_zstd="$enableval"],

              [enable_zstd=auto])

AS_IF([test "x$enable_zstd" != "xno"], [

  PKG_CHECK_MODULES([ZSTD], [libzstd], [have_zstd=yes], [have_zstd=no])

  AS_IF([test "$enable_zstd" = "yes"], [

    if test "$have_zstd" = "no"; then

      AC_MSG_ERROR([--enable-zstd specified, but not available])

    fi

  ])

])

if test "x$have_zstd" = "xyes"; then

  AC_DEFINE([HAVE_ZSTD], [1], [Define if libzstd is available])

  ZSTD_REQUIRES=libzstd

  AC_SUBST(ZSTD_REQUIRES)

fi

AM_CONDITIONAL([HAVE_ZSTD], [test "x$have_zstd" = "xyes"])

#=================

dnl

dnl Check for features

dnl

dnl Checks for libraries.

AC_CHECK_FUNC(gethostname, [], [

    AC_CHECK_LIB(nsl, gethostname)

])

AC_CHECK_HEADERS(pthread.h)

AC_CHECK_LIB(pthread, pthread_mutex_trylock, [], [

  dnl OSF 5.0 has the the symbols prefixed with __ in libpthread.

  AC_CHECK_LIB(pthread, __pthread_mutex_trylock, [], [

    AC_CHECK_LIB(thread, mutex_lock)

  ])

])

AC_SEARCH_LIBS(dlopen, [dl])

#=================

# Check for libelf library. Prefer external, otherwise none.

WITH_LIBELF_LIB=

AC_CHECK_HEADER([libelf.h])

AC_CHECK_HEADERS([gelf.h], [

	AC_CHECK_LIB(elf, gelf_getvernaux, [

	    AC_DEFINE(HAVE_LIBELF, 1, [Define to 1 if you have the 'elf' library (-lelf).])

	    WITH_LIBELF_LIB="-lelf"

	    WITH_LIBELF=yes

	])

])

AC_SUBST(WITH_LIBELF_LIB)

AM_CONDITIONAL(LIBELF,[test "$WITH_LIBELF" = yes])

AC_CHECK_HEADERS([dwarf.h], [

  WITH_LIBDWARF=yes

])

AM_CONDITIONAL(LIBDWARF,[test "$WITH_LIBDWARF" = yes])

#=================

# Select crypto library

AC_ARG_WITH(crypto,

            [AC_HELP_STRING([--with-crypto=CRYPTO_LIB],

                            [The cryptographic library to use (nss|beecrypt|openssl). The default is nss.])

                            ],[],

                            [with_crypto=nss])

# Refuse to proceed if someone specified --with-beecrypt (removed)

AC_ARG_WITH(beecrypt,

    [AC_HELP_STRING([--with-beecrypt (OBSOLETE)], [Obsolete argument. Use --with-crypto=beecrypt])

    ],[AC_MSG_ERROR([--with-beecrypt no longer supported. Use --with-crypto=beecrypt])],

    [])

# Check for beecrypt library if requested.

AC_ARG_WITH(internal_beecrypt, [  --with-internal-beecrypt build with internal beecrypt library ],,[with_internal_beecrypt=no])

AM_CONDITIONAL([WITH_INTERNAL_BEECRYPT],[test "$with_internal_beecrypt" = yes])

if test "$with_internal_beecrypt" = yes ; then

  with_crypto=beecrypt

fi

AM_CONDITIONAL([WITH_BEECRYPT],[test "$with_crypto" = beecrypt])

WITH_BEECRYPT_INCLUDE=

WITH_BEECRYPT_LIB=

if test "$with_crypto" = beecrypt ; then

  AC_DEFINE(WITH_BEECRYPT, 1, [Build with beecrypt instead of nss3 support?])

  if test "$with_internal_beecrypt" = yes ; then

    WITH_BEECRYPT_INCLUDE="-I\$(top_srcdir)/beecrypt"

    AC_DEFINE(HAVE_BEECRYPT_API_H, 1, [Define to 1 if you have the <beecrypt/api.h> header file.])

  else

    AC_CHECK_LIB(beecrypt, mpfprintln, [

      WITH_BEECRYPT_LIB="-lbeecrypt"

    ],[

      AC_MSG_ERROR([missing required library 'beecrypt'])

    ])

    AC_CHECK_HEADER([beecrypt/api.h], [AC_DEFINE(HAVE_BEECRYPT_API_H, 1, [Define to 1 if you have the <beecrypt/api.h> header file.])

    ])

  fi

fi

AC_SUBST(WITH_BEECRYPT_LIB)

AC_SUBST(WITH_BEECRYPT_INCLUDE)

#=================

# Check for audit library.

AC_ARG_WITH(audit,

AS_HELP_STRING([--with-audit],[log results using Linux Audit]),

with_audit=$withval,

with_audit=auto)

WITH_AUDIT_LIB=

AS_IF([test "x$with_audit" != xno],[

    AC_SEARCH_LIBS([audit_open],[audit],[

    WITH_AUDIT_LIB="$ac_res"

    AC_DEFINE(WITH_AUDIT, 1, [libaudit support])

    ],

       [if test "x$with_audit" != xauto; then

		AC_MSG_ERROR([missing audit library])

	fi

    ])

])

AC_SUBST(WITH_AUDIT_LIB)

#=================

# Check for OpenSSL library.

# We need evp.h from OpenSSL.

WITH_OPENSSL_INCLUDE=

WITH_OPENSSL_LIB=

if test "$with_crypto" = openssl; then

# If we have pkgconfig make sure CPPFLAGS are setup correctly for the OpenSSL

# -I include path.

AC_PATH_TOOL([PKGCONFIG], [pkg-config], [no], [$PATH:/usr/bin:/usr/local/bin])

if test "x$PKGCONFIG" != "xno"; then

  CPPFLAGS="$CPPFLAGS $($PKGCONFIG --cflags libcrypto)"

  WITH_OPENSSL_LIB=$($PKGCONFIG --libs libcrypto)

else

  WITH_OPENSSL_LIB=-lcrypto

fi

AC_CHECK_HEADERS([openssl/evp.h], [], [

  AC_MSG_ERROR([missing required OpenSSL header])

])

AC_CHECK_HEADERS([openssl/rsa.h], [], [

  AC_MSG_ERROR([missing required OpenSSL header])

])

AC_CHECK_HEADERS([openssl/dsa.h], [], [

  AC_MSG_ERROR([missing required OpenSSL header])

])

AC_CHECK_LIB(crypto, EVP_DigestInit_ex, [], [

  AC_MSG_ERROR([required OpenSSL library 'libcrypto' missing or too old])

])

AC_CHECK_LIB(crypto, EVP_MD_CTX_new, [

    AC_DEFINE(HAVE_EVP_MD_CTX_NEW, 1, [Define to 1 if OpenSSL has EVP_MD_CTX_new])

    AC_SUBST(HAVE_EVP_MD_CTX_NEW, [1])

  ], [

  AC_CHECK_LIB(crypto, EVP_MD_CTX_create, [], [

      AC_MSG_ERROR([required OpenSSL library 'libcrypto' missing or too old])

  ])

])

AC_CHECK_LIB(crypto, EVP_PKEY_CTX_new, [], [

  AC_MSG_ERROR([required OpenSSL library 'libcrypto' missing or too old])

])

AC_CHECK_LIB(crypto, DSA_set0_key, [

    AC_DEFINE(HAVE_DSA_SET0_KEY, 1, [Define to 1 if OpenSSL has DSA_set0_key])

    AC_SUBST(HAVE_DSA_SET0_KEY, [1])

    ], []

)

AC_CHECK_LIB(crypto, DSA_set0_pqg, [

    AC_DEFINE(HAVE_DSA_SET0_PQG, 1, [Define to 1 if OpenSSL has DSA_set0_pqg])

    AC_SUBST(HAVE_DSA_SET0_PQG, [1])

    ], []

)

AC_CHECK_LIB(crypto, DSA_SIG_set0, [

    AC_DEFINE(HAVE_DSA_SIG_SET0, 1, [Define to 1 if OpenSSL has DSA_SIG_set0])

    AC_SUBST(HAVE_DSA_SIG_SET0, [1])

    ], []

)

AC_CHECK_LIB(crypto, RSA_set0_key, [

    AC_DEFINE(HAVE_RSA_SET0_KEY, 1, [Define to 1 if OpenSSL has RSA_set0_key])

    AC_SUBST(HAVE_RSA_SET0_KEY, [1])

    ], []

)

AC_CHECK_LIB(crypto, BN_bn2binpad, [

    AC_DEFINE(HAVE_BN2BINPAD, 1, [Define to 1 if OpenSSL has BN_bn2binpad])

    AC_SUBST(HAVE_BN2BINPAD, [1])

    ], []

)

fi

AM_CONDITIONAL([WITH_OPENSSL],[test "$with_crypto" = openssl])

AC_SUBST(WITH_OPENSSL_INCLUDE)

AC_SUBST(WITH_OPENSSL_LIB)

#=================

# Check for NSS library.

# We need nss.h from NSS which needs nspr.h. Unfortunately both glibc and NSS

# have a header named nss.h... so make extra check for NSS's sechash.h

# which we use too and hopefully is slightly more unique to NSS.

WITH_NSS_INCLUDE=

WITH_NSS_LIB=

if test "$with_crypto" = nss; then

# If we have pkgconfig make sure CPPFLAGS are setup correctly for the nss

# -I include path. Otherwise the below checks will fail because nspr.h

# cannot be found.

AC_PATH_TOOL([PKGCONFIG], [pkg-config], [no], [$PATH:/usr/bin:/usr/local/bin])

if test "x$PKGCONFIG" != "xno"; then

  CPPFLAGS="$CPPFLAGS $($PKGCONFIG --cflags nss)"

fi

AC_CHECK_HEADERS([nspr.h nss.h sechash.h], [], [

  AC_MSG_ERROR([missing required NSPR / NSS header])

])

AC_CHECK_LIB(nss3, VFY_VerifyDigestDirect, [

  WITH_NSS_LIB=-lnss3

  AC_CHECK_LIB(nss3, NSS_InitContext, [

    AC_DEFINE(HAVE_NSS_INITCONTEXT, 1, [Define to 1 if NSS has NSS_InitContext])

    AC_SUBST(HAVE_NSS_INITCONTEXT, [1])

  ])

], [

  AC_MSG_ERROR([required NSS library 'nss3' missing or too old])

])

fi

AC_SUBST(WITH_NSS_INCLUDE)

AC_SUBST(WITH_NSS_LIB)

#=================

# Check for magic library.

WITH_MAGIC_INCLUDE=

WITH_MAGIC_LIB=

AC_CHECK_HEADER([magic.h], [

    AC_CHECK_LIB(magic, magic_open, [

      WITH_MAGIC_INCLUDE=

      WITH_MAGIC_LIB="-lmagic"

    ],[

      AC_MSG_ERROR([missing required library 'libmagic']) 

    ])

],[

      AC_MSG_ERROR([missing required header magic.h]) 

])

AC_SUBST(WITH_MAGIC_INCLUDE)

AC_SUBST(WITH_MAGIC_LIB)

#=================

# Check for popt library.

WITH_POPT_INCLUDE=

WITH_POPT_LIB=

AC_CHECK_HEADER([popt.h], [

  AC_CHECK_LIB(popt, poptGetContext, [

      WITH_POPT_INCLUDE=

      WITH_POPT_LIB="-lpopt"

  ],[

    AC_MSG_ERROR([missing required library popt])

  ])

],[

  AC_MSG_ERROR([missing required header popt.h])

])

AC_SUBST(WITH_POPT_INCLUDE)

AC_SUBST(WITH_POPT_LIB)

#=================

# Check for libarchive library.

AC_ARG_WITH([archive], [AS_HELP_STRING([--with-archive], [build rpm2archive - requires libarchive])],

            [],

            [with_archive=yes])

WITH_ARCHIVE_INCLUDE=

WITH_ARCHIVE_LIB=

AS_IF([test "$with_archive" != no],[

  AC_CHECK_HEADER([archive.h], [

    AC_CHECK_LIB(archive, archive_write_open_filename, [

      WITH_ARCHIVE_INCLUDE=

      WITH_ARCHIVE_LIB="-larchive"

    ],[

      AC_MSG_ERROR([missing required library 'libarchive'])

    ])

],[

      AC_MSG_ERROR([missing required header archive.h])

  ])

])

AC_SUBST(WITH_ARCHIVE_INCLUDE)

AC_SUBST(WITH_ARCHIVE_LIB)

AM_CONDITIONAL(WITH_ARCHIVE,[test "$with_archive" = yes])

#=================

# Check for elfutils libdw library with dwelf_elf_gnu_build_id.

WITH_LIBDW_LIB=

HAVE_LIBDW_STRTAB=

AS_IF([test "$WITH_LIBELF" = yes],[

  AC_CHECK_HEADERS([elfutils/libdwelf.h],[

    # dwelf_elf_gnu_build_id was introduced in elfutils 0.159

    AC_CHECK_LIB(dw, dwelf_elf_gnu_build_id, [

      AC_DEFINE(HAVE_LIBDW, 1,

                [Define to 1 if you have elfutils libdw library])

      WITH_LIBDW_LIB="-ldw"

      WITH_LIBDW=yes

      # If possible we also want the strtab functions from elfutils 0.167.

      # But we can fall back on the (unsupported) ebl alternatives if not.

      AC_CHECK_LIB(dw, dwelf_strtab_init, [HAVE_LIBDW_STRTAB=yes])

      # whether libdw supports compressed ELF objects

      AC_CHECK_LIB(dw, dwelf_elf_begin, [

                   AC_DEFINE(HAVE_DWELF_ELF_BEGIN, 1, [Have dwelf_elf_begin?])

      ])

    ])

  ])

])

AC_SUBST(WITH_LIBDW_LIB)

AM_CONDITIONAL(LIBDW,[test "$WITH_LIBDW" = yes])

AM_CONDITIONAL(HAVE_LIBDW_STRTAB,[test "$HAVE_LIBDW_STRTAB" = yes])

#=================

# Process --with/without-external-db

AC_ARG_WITH(external_db, [AS_HELP_STRING([--with-external-db],[build against an external Berkeley db])],

[case "$with_external_db" in

yes|no) ;;

*) AC_MSG_ERROR([invalid argument to --with-external-db]) ;;

esac],

[with_external_db=maybe])

case "$with_external_db" in

yes )

  AC_CHECK_HEADERS([db.h],[

    AC_PREPROC_IFELSE([

      AC_LANG_SOURCE([

	#include <db.h>

	#if ((DB_VERSION_MAJOR < 4) || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR < 5))

	#error Berkeley DB too old

	#endif

      ])

    ],[ WITH_DB_LIB=-ldb ], 

      [ AC_MSG_ERROR([Berkeley DB version >= 4.5 required])

    ])

  ],[

    AC_MSG_ERROR([missing required header db.h])

  ])

  ;;

no|maybe )

  # Try internal database first, then fall back to external

  # unless --without-external-db (no) was explicitly given.

  if [ test -x db/dist/configure ]; then

    AC_DEFINE(HAVE_DB_H, 1, [Define if you have the <db3/db.h> header file])

  else

    case "$with_external_db" in

    maybe)

      AC_CHECK_HEADERS([db.h],[

        AC_PREPROC_IFELSE([

          AC_LANG_SOURCE([

	    #include <db.h>

	    #if ((DB_VERSION_MAJOR < 4) || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR < 5))

	    #error Berkeley DB too old

	    #endif

          ])

        ],[ WITH_DB_LIB=-ldb ],

          [ AC_MSG_ERROR([Berkeley DB version >= 4.5 required])

        ])

      ],[

        AC_MSG_ERROR([missing required header db.h])

      ])

    ;;

    no)

      AC_MSG_ERROR([internal Berkeley DB directory not present, see INSTALL])

    ;;

    esac

  fi

  ;;

esac

AC_SUBST([WITH_DB_LIB])

#=================

# Process --enable-ndb

AC_ARG_ENABLE([ndb], [AS_HELP_STRING([--enable-ndb (EXPERIMENTAL)],[enable the new rpm database format])],

[case "$enable_ndb" in

yes|no) ;;

*) AC_MSG_ERROR([invalid argument to --enable-ndb])

  ;;

esac],

[enable_ndb=no])

AS_IF([test "$enable_ndb" = yes],[

  AC_CHECK_FUNCS([mremap],

    [AC_DEFINE(ENABLE_NDB, 1, [Enable new rpm database format?])],

    [AC_MSG_ERROR([mremap function required by ndb])],

    [#include <sys/mman.h>])

])

AM_CONDITIONAL([NDB], [test "$enable_ndb" = yes])

#=================

# Check for LMDB support

AC_ARG_ENABLE([lmdb],

              [AS_HELP_STRING([--enable-lmdb=@<:@yes/no/auto@:>@ (EXPERIMENTAL)],

                              [build with LMDB rpm database format support (default=auto)])],

              [enable_lmdb="$enableval"],

              [enable_lmdb=auto])

AS_IF([test "x$enable_lmdb" != "xno"], [

  PKG_CHECK_MODULES([LMDB], [lmdb], [have_lmdb=yes], [have_lmdb=no])

  AS_IF([test "$enable_lmdb" = "yes"], [

    if test "$have_lmdb" = "no"; then

      AC_MSG_ERROR([--enable-lmdb specified, but not available])

    fi

  ])

])

if test "x$have_lmdb" = "xyes"; then

  AC_DEFINE([WITH_LMDB], [1], [Define if LMDB is available])

  LMDB_REQUIRES=lmdb

  AC_SUBST(LMDB_REQUIRES)

fi

AM_CONDITIONAL([LMDB], [test "x$have_lmdb" = "xyes"])

AM_GNU_GETTEXT_VERSION([0.16.1])

AM_GNU_GETTEXT([external])

AM_ICONV

dnl Checks for header files we can live without.

AC_HEADER_STDC

dnl glibc and autoconf don't really play well together.

dnl glibc will produce a warning when including the wrong header.

dnl but still define major and minor. Causing us to include the header

dnl that produces a giant warning for each major/minor use.

dnl Use -Werror to work around that.

old_CFLAGS=$CFLAGS

CFLAGS="$CFLAGS -Werror"

AC_HEADER_MAJOR

CFLAGS=$old_CFLAGS

AC_STRUCT_DIRENT_D_TYPE

AC_CHECK_HEADERS(limits.h)

AC_CHECK_HEADERS(fcntl.h getopt.h)

AC_CHECK_HEADERS(sys/utsname.h)

AC_CHECK_HEADERS(sys/systemcfg.h)

AC_CHECK_HEADERS(sys/param.h)

AC_CHECK_HEADERS(sys/auxv.h)

dnl statfs portability fiddles.

dnl

dnl We should really emulate/steal sections of the statfs and struct statfs

dnl checks from GNU fileutils.

dnl

AC_MSG_CHECKING(for struct statfs)

dnl

dnl this is easier than nesting AC_TRY_COMPILEs...

dnl

found_struct_statfs=no

if test X$found_struct_statfs = Xno ; then

dnl Solaris 2.6+ wants to use statvfs

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[

#ifdef HAVE_SYS_TYPES_H

#include <sys/types.h>

#endif

#include <sys/statvfs.h> ]], [[struct statvfs sfs;]])],[AC_MSG_RESULT(in sys/statvfs.h)

	AC_DEFINE(STATFS_IN_SYS_STATVFS, 1,

		[statfs in <sys/statvfs.h> (for solaris 2.6+ systems)])

	found_struct_statfs=yes],[])

fi

if test X$found_struct_statfs = Xno ; then

dnl first try including sys/vfs.h

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[

#ifdef HAVE_SYS_TYPES_H

#include <sys/types.h>

#endif

#include <sys/vfs.h> ]], [[struct statfs sfs;]])],[AC_MSG_RESULT(in sys/vfs.h)

	AC_DEFINE(STATFS_IN_SYS_VFS, 1, [statfs in <sys/vfs.h> (for linux systems)])

	found_struct_statfs=yes],[])

fi

if test X$found_struct_statfs = Xno ; then

dnl ...next try including sys/mount.h

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[

#ifdef HAVE_SYS_TYPES_H

#include <sys/types.h>

#endif

#ifdef HAVE_SYS_PARAM_H

#include <sys/param.h>

#endif

#include <sys/mount.h> ]], [[struct statfs sfs;]])],[AC_MSG_RESULT(in sys/mount.h)

	AC_DEFINE(STATFS_IN_SYS_MOUNT, 1, [statfs in <sys/mount.h> (for Digital Unix 4.0D systems)])

	found_struct_statfs=yes],[])

fi

if test X$found_struct_statfs = Xno ; then

dnl ...still no joy.  Try sys/statfs.h

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[

#ifdef HAVE_SYS_TYPES_H

#include <sys/types.h>

#endif

#include <sys/statfs.h> ]], [[struct statfs sfs;]])],[AC_MSG_RESULT(in sys/statfs.h)

	AC_DEFINE(STATFS_IN_SYS_STATFS, 1, [statfs in <sys/statfs.h> (for Irix 6.4 systems)])

	found_struct_statfs=yes],[])

fi

if test X$found_struct_statfs = Xno ; then

dnl ...no luck.  Warn the user of impending doom.

AC_MSG_WARN(not found)