dnl macros to configure gnupg dnl Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. dnl dnl This file is part of GnuPG. dnl dnl GnuPG 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 GnuPG 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; if not, write to the Free Software dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA dnl GNUPG_MSG_PRINT(STRING) dnl print a message dnl define(GNUPG_MSG_PRINT, [ echo $ac_n "$1"" $ac_c" 1>&AC_FD_MSG ]) dnl GNUPG_CHECK_TYPEDEF(TYPE, HAVE_NAME) dnl Check whether a typedef exists and create a #define $2 if it exists dnl AC_DEFUN(GNUPG_CHECK_TYPEDEF, [ AC_MSG_CHECKING(for $1 typedef) AC_CACHE_VAL(gnupg_cv_typedef_$1, [AC_TRY_COMPILE([#define _GNU_SOURCE 1 #include #include ], [ #undef $1 int a = sizeof($1); ], gnupg_cv_typedef_$1=yes, gnupg_cv_typedef_$1=no )]) AC_MSG_RESULT($gnupg_cv_typedef_$1) if test "$gnupg_cv_typedef_$1" = yes; then AC_DEFINE($2,1,[Defined if a `]$1[' is typedef'd]) fi ]) dnl GNUPG_CHECK_GNUMAKE dnl AC_DEFUN(GNUPG_CHECK_GNUMAKE, [ if ${MAKE-make} --version 2>/dev/null | grep '^GNU ' >/dev/null 2>&1; then : else AC_MSG_WARN([[ *** *** It seems that you are not using GNU make. Some make tools have serious *** flaws and you may not be able to build this software at all. Before you *** complain, please try GNU make: GNU make is easy to build and available *** at all GNU archives. It is always available from ftp.gnu.org:/gnu/make. ***]]) fi ]) dnl GNUPG_CHECK_FAQPROG dnl AC_DEFUN(GNUPG_CHECK_FAQPROG, [ AC_MSG_CHECKING(for faqprog.pl) if faqprog.pl -V 2>/dev/null | grep '^faqprog.pl ' >/dev/null 2>&1; then working_faqprog=yes FAQPROG="faqprog.pl" else working_faqprog=no FAQPROG=": " fi AC_MSG_RESULT($working_faqprog) AC_SUBST(FAQPROG) AM_CONDITIONAL(WORKING_FAQPROG, test "$working_faqprog" = "yes" ) dnl if test $working_faqprog = no; then dnl AC_MSG_WARN([[ dnl *** dnl *** It seems that the faqprog.pl program is not installed; dnl *** however it is only needed if you want to change the FAQ. dnl *** (faqprog.pl should be available at: dnl *** ftp://ftp.gnupg.org/pub/gcrypt/contrib/faqprog.pl ) dnl *** No need to worry about this warning. dnl ***]]) dnl fi ]) dnl GNUPG_CHECK_DOCBOOK_TO_TEXI dnl AC_DEFUN(GNUPG_CHECK_DOCBOOK_TO_TEXI, [ AC_CHECK_PROG(DOCBOOK_TO_TEXI, docbook2texi, yes, no) AC_MSG_CHECKING(for sgml to texi tools) working_sgmltotexi=no if test "$ac_cv_prog_DOCBOOK_TO_TEXI" = yes; then if sgml2xml -v /dev/null 2>&1 | grep 'SP version' >/dev/null 2>&1 ; then working_sgmltotexi=yes fi fi AC_MSG_RESULT($working_sgmltotexi) AM_CONDITIONAL(HAVE_DOCBOOK_TO_TEXI, test "$working_sgmltotexi" = "yes" ) ]) dnl GNUPG_CHECK_ENDIAN dnl define either LITTLE_ENDIAN_HOST or BIG_ENDIAN_HOST dnl define(GNUPG_CHECK_ENDIAN, [ if test "$cross_compiling" = yes; then AC_MSG_WARN(cross compiling; assuming little endianess) fi AC_MSG_CHECKING(endianess) AC_CACHE_VAL(gnupg_cv_c_endian, [ gnupg_cv_c_endian=unknown # See if sys/param.h defines the BYTE_ORDER macro. AC_TRY_COMPILE([#include #include ], [ #if !BYTE_ORDER || !BIG_ENDIAN || !LITTLE_ENDIAN bogus endian macros #endif], [# It does; now see whether it defined to BIG_ENDIAN or not. AC_TRY_COMPILE([#include #include ], [ #if BYTE_ORDER != BIG_ENDIAN not big endian #endif], gnupg_cv_c_endian=big, gnupg_cv_c_endian=little)]) if test "$gnupg_cv_c_endian" = unknown; then AC_TRY_RUN([main () { /* Are we little or big endian? From Harbison&Steele. */ union { long l; char c[sizeof (long)]; } u; u.l = 1; exit (u.c[sizeof (long) - 1] == 1); }], gnupg_cv_c_endian=little, gnupg_cv_c_endian=big, gnupg_cv_c_endian=little ) fi ]) AC_MSG_RESULT([$gnupg_cv_c_endian]) if test "$gnupg_cv_c_endian" = little; then AC_DEFINE(LITTLE_ENDIAN_HOST,1, [Defined if the host has little endian byte ordering]) else AC_DEFINE(BIG_ENDIAN_HOST,1, [Defined if the host has big endian byte ordering]) fi ]) dnl GNUPG_CHECK_CACHE dnl define(GNUPG_CHECK_CACHE, [ AC_MSG_CHECKING(cached information) gnupg_hostcheck="$target" AC_CACHE_VAL(gnupg_cv_hostcheck, [ gnupg_cv_hostcheck="$gnupg_hostcheck" ]) if test "$gnupg_cv_hostcheck" != "$gnupg_hostcheck"; then AC_MSG_RESULT(changed) AC_MSG_WARN(config.cache exists!) AC_MSG_ERROR(you must do 'make distclean' first to compile for different target or different parameters.) else AC_MSG_RESULT(ok) fi ]) ###################################################################### # Check for -fPIC etc (taken from libtool) # This sets CFLAGS_PIC to the required flags # NO_PIC to yes if it is not possible to # generate PIC ###################################################################### dnl GNUPG_CHECK_PIC dnl define(GNUPG_CHECK_PIC, [ AC_MSG_CHECKING(for option to create PIC) CFLAGS_PIC= NO_PIC=no if test "$cross_compiling" = yes; then AC_MSG_RESULT(assume none) else if test "$GCC" = yes; then CFLAGS_PIC="-fPIC" else case "$host_os" in aix3* | aix4*) # All rs/6000 code is PIC # but is there any non-rs/6000 AIX platform? ;; hpux9* | hpux10*) CFLAGS_PIC="+Z" ;; irix5* | irix6*) # PIC (with -KPIC) is the default. ;; osf3* | osf4*) # FIXME - pic_flag is probably required for # hppa*-osf* and i860-osf* ;; sco3.2v5*) CFLAGS_PIC='-Kpic' ;; solaris2* | solaris7* ) CFLAGS_PIC='-KPIC' ;; sunos4*) CFLAGS_PIC='-PIC' ;; *) NO_PIC=yes ;; esac fi case "$host_cpu" in rs6000 | powerpc | powerpcle) # Yippee! All RS/6000 and PowerPC code is position-independent. CFLAGS_PIC="" ;; esac if test "$NO_PIC" = yes; then AC_MSG_RESULT(not possible) else if test -z "$CFLAGS_PIC"; then AC_MSG_RESULT(none) else AC_MSG_RESULT($CFLAGS_PIC) fi fi fi ]) ###################################################################### # Check for export-dynamic flag # This sets CFLAGS_EXPORTDYNAMIC to the required flags ###################################################################### dnl GNUPG_CHECK_EXPORTDYNAMIC dnl define(GNUPG_CHECK_EXPORTDYNAMIC, [ AC_MSG_CHECKING(how to specify -export-dynamic) if test "$cross_compiling" = yes; then AC_MSG_RESULT(assume none) CFLAGS_EXPORTDYNAMIC="" else AC_CACHE_VAL(gnupg_cv_export_dynamic,[ if AC_TRY_COMMAND([${CC-cc} $CFLAGS -Wl,--version 2>&1 | grep "GNU ld" >/dev/null]); then # using gnu's linker gnupg_cv_export_dynamic="-Wl,-export-dynamic" else case "$host_os" in hpux* ) gnupg_cv_export_dynamic="-Wl,-E" ;; * ) gnupg_cv_export_dynamic="" ;; esac fi ]) AC_MSG_RESULT($gnupg_cv_export_dynamic) CFLAGS_EXPORTDYNAMIC="$gnupg_cv_export_dynamic" fi ]) ##################################################################### # Check for SysV IPC (from GIMP) # And see whether we have a SHM_LOCK (FreeBSD does not have it). ##################################################################### dnl GNUPG_CHECK_IPC dnl define(GNUPG_CHECK_IPC, [ AC_CHECK_HEADERS(sys/ipc.h sys/shm.h) if test "$ac_cv_header_sys_shm_h" = "yes"; then AC_MSG_CHECKING(whether IPC_RMID allowes subsequent attaches) AC_CACHE_VAL(gnupg_cv_ipc_rmid_deferred_release, AC_TRY_RUN([ #include #include #include int main() { int id; char *shmaddr; id = shmget (IPC_PRIVATE, 4, IPC_CREAT | 0777); if (id == -1) exit (2); shmaddr = shmat (id, 0, 0); shmctl (id, IPC_RMID, 0); if ((char*) shmat (id, 0, 0) == (char*) -1) { shmdt (shmaddr); exit (1); } shmdt (shmaddr); shmdt (shmaddr); exit (0); } ], gnupg_cv_ipc_rmid_deferred_release="yes", gnupg_cv_ipc_rmid_deferred_release="no", gnupg_cv_ipc_rmid_deferred_release="assume-no") ) if test "$gnupg_cv_ipc_rmid_deferred_release" = "yes"; then AC_DEFINE(IPC_RMID_DEFERRED_RELEASE,1, [Defined if we can do a deferred shm release]) AC_MSG_RESULT(yes) else if test "$gnupg_cv_ipc_rmid_deferred_release" = "no"; then AC_MSG_RESULT(no) else AC_MSG_RESULT([assuming no]) fi fi AC_MSG_CHECKING(whether SHM_LOCK is available) AC_CACHE_VAL(gnupg_cv_ipc_have_shm_lock, AC_TRY_COMPILE([#include #include #include ],[ int shm_id; shmctl(shm_id, SHM_LOCK, 0); ], gnupg_cv_ipc_have_shm_lock="yes", gnupg_cv_ipc_have_shm_lock="no" ) ) if test "$gnupg_cv_ipc_have_shm_lock" = "yes"; then AC_DEFINE(IPC_HAVE_SHM_LOCK,1, [Defined if a SysV shared memory supports the LOCK flag]) AC_MSG_RESULT(yes) else AC_MSG_RESULT(no) fi fi ]) ###################################################################### # Check whether mlock is broken (hpux 10.20 raises a SIGBUS if mlock # is not called from uid 0 (not tested whether uid 0 works) # For DECs Tru64 we have also to check whether mlock is in librt # mlock is there a macro using memlk() ###################################################################### dnl GNUPG_CHECK_MLOCK dnl define(GNUPG_CHECK_MLOCK, [ AC_CHECK_FUNCS(mlock) if test "$ac_cv_func_mlock" = "no"; then AC_CHECK_HEADERS(sys/mman.h) if test "$ac_cv_header_sys_mman_h" = "yes"; then # Add librt to LIBS: AC_CHECK_LIB(rt, memlk) AC_CACHE_CHECK([whether mlock is in sys/mman.h], gnupg_cv_mlock_is_in_sys_mman, [AC_TRY_LINK([ #include #ifdef HAVE_SYS_MMAN_H #include #endif ], [ int i; /* glibc defines this for functions which it implements * to always fail with ENOSYS. Some functions are actually * named something starting with __ and the normal name * is an alias. */ #if defined (__stub_mlock) || defined (__stub___mlock) choke me #else mlock(&i, 4); #endif ; return 0; ], gnupg_cv_mlock_is_in_sys_mman=yes, gnupg_cv_mlock_is_in_sys_mman=no)]) if test "$gnupg_cv_mlock_is_in_sys_mman" = "yes"; then AC_DEFINE(HAVE_MLOCK,1, [Defined if the system supports an mlock() call]) fi fi fi if test "$ac_cv_func_mlock" = "yes"; then AC_MSG_CHECKING(whether mlock is broken) AC_CACHE_VAL(gnupg_cv_have_broken_mlock, AC_TRY_RUN([ #include #include #include #include #include #include int main() { char *pool; int err; long int pgsize = getpagesize(); pool = malloc( 4096 + pgsize ); if( !pool ) return 2; pool += (pgsize - ((long int)pool % pgsize)); err = mlock( pool, 4096 ); if( !err || errno == EPERM ) return 0; /* okay */ return 1; /* hmmm */ } ], gnupg_cv_have_broken_mlock="no", gnupg_cv_have_broken_mlock="yes", gnupg_cv_have_broken_mlock="assume-no" ) ) if test "$gnupg_cv_have_broken_mlock" = "yes"; then AC_DEFINE(HAVE_BROKEN_MLOCK,1, [Defined if the mlock() call does not work]) AC_MSG_RESULT(yes) AC_CHECK_FUNCS(plock) else if test "$gnupg_cv_have_broken_mlock" = "no"; then AC_MSG_RESULT(no) else AC_MSG_RESULT(assuming no) fi fi fi ]) ################################################################ # GNUPG_PROG_NM - find the path to a BSD-compatible name lister AC_DEFUN(GNUPG_PROG_NM, [AC_MSG_CHECKING([for BSD-compatible nm]) AC_CACHE_VAL(ac_cv_path_NM, [if test -n "$NM"; then # Let the user override the test. ac_cv_path_NM="$NM" else IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:" for ac_dir in /usr/ucb /usr/ccs/bin $PATH /bin; do test -z "$ac_dir" && ac_dir=. if test -f $ac_dir/nm; then # Check to see if the nm accepts a BSD-compat flag. # Adding the `sed 1q' prevents false positives on HP-UX, which says: # nm: unknown option "B" ignored if ($ac_dir/nm -B /dev/null 2>&1 | sed '1q'; exit 0) | egrep /dev/null >/dev/null; then ac_cv_path_NM="$ac_dir/nm -B" elif ($ac_dir/nm -p /dev/null 2>&1 | sed '1q'; exit 0) | egrep /dev/null >/dev/null; then ac_cv_path_NM="$ac_dir/nm -p" else ac_cv_path_NM="$ac_dir/nm" fi break fi done IFS="$ac_save_ifs" test -z "$ac_cv_path_NM" && ac_cv_path_NM=nm fi]) NM="$ac_cv_path_NM" AC_MSG_RESULT([$NM]) AC_SUBST(NM) ]) # GNUPG_SYS_NM_PARSE - Check for command ro grab the raw symbol name followed # by C symbol name from nm. AC_DEFUN(GNUPG_SYS_NM_PARSE, [AC_REQUIRE([AC_CANONICAL_HOST])dnl AC_REQUIRE([GNUPG_PROG_NM])dnl # Check for command to grab the raw symbol name followed by C symbol from nm. AC_MSG_CHECKING([command to parse $NM output]) AC_CACHE_VAL(ac_cv_sys_global_symbol_pipe, [# These are sane defaults that work on at least a few old systems. # {They come from Ultrix. What could be older than Ultrix?!! ;)} changequote(,)dnl # Character class describing NM global symbol codes. ac_symcode='[BCDEGRSTU]' # Regexp to match symbols that can be accessed directly from C. ac_sympat='\([_A-Za-z][_A-Za-z0-9]*\)' # Transform the above into a raw symbol and a C symbol. ac_symxfrm='\1 \1' # Define system-specific variables. case "$host_os" in aix*) ac_symcode='[BCDTU]' ;; freebsd* | netbsd* | openbsd* | bsdi* | sunos* | cygwin32* | mingw32*) ac_sympat='_\([_A-Za-z][_A-Za-z0-9]*\)' ac_symxfrm='_\1 \1' ;; irix*) # Cannot use undefined symbols on IRIX because inlined functions mess us up. ac_symcode='[BCDEGRST]' ;; solaris*) ac_symcode='[BDTU]' ;; esac # If we're using GNU nm, then use its standard symbol codes. if $NM -V 2>&1 | egrep '(GNU|with BFD)' > /dev/null; then ac_symcode='[ABCDGISTUW]' fi case "$host_os" in cygwin32* | mingw32*) # We do not want undefined symbols on cygwin32. The user must # arrange to define them via -l arguments. ac_symcode='[ABCDGISTW]' ;; esac changequote([,])dnl # Write the raw and C identifiers. ac_cv_sys_global_symbol_pipe="sed -n -e 's/^.* $ac_symcode $ac_sympat$/$ac_symxfrm/p'" # Check to see that the pipe works correctly. ac_pipe_works=no cat > conftest.$ac_ext < $ac_nlist) && test -s "$ac_nlist"; then # Try sorting and uniquifying the output. if sort "$ac_nlist" | uniq > "$ac_nlist"T; then mv -f "$ac_nlist"T "$ac_nlist" ac_wcout=`wc "$ac_nlist" 2>/dev/null` changequote(,)dnl ac_count=`echo "X$ac_wcout" | sed -e 's,^X,,' -e 's/^[ ]*\([0-9][0-9]*\).*$/\1/'` changequote([,])dnl (test "$ac_count" -ge 0) 2>/dev/null || ac_count=-1 else rm -f "$ac_nlist"T ac_count=-1 fi # Make sure that we snagged all the symbols we need. if egrep ' nm_test_var$' "$ac_nlist" >/dev/null; then if egrep ' nm_test_func$' "$ac_nlist" >/dev/null; then cat < conftest.c #ifdef __cplusplus extern "C" { #endif EOF # Now generate the symbol file. sed 's/^.* \(.*\)$/extern char \1;/' < "$ac_nlist" >> conftest.c cat <> conftest.c #if defined (__STDC__) && __STDC__ # define __ptr_t void * #else # define __ptr_t char * #endif /* The number of symbols in dld_preloaded_symbols, -1 if unsorted. */ int dld_preloaded_symbol_count = $ac_count; /* The mapping between symbol names and symbols. */ struct { char *name; __ptr_t address; } changequote(,)dnl dld_preloaded_symbols[] = changequote([,])dnl { EOF sed 's/^\(.*\) \(.*\)$/ {"\1", (__ptr_t) \&\2},/' < "$ac_nlist" >> conftest.c cat <<\EOF >> conftest.c {0, (__ptr_t) 0} }; #ifdef __cplusplus } #endif EOF # Now try linking the two files. mv conftest.$ac_objext conftestm.$ac_objext ac_save_LIBS="$LIBS" ac_save_CFLAGS="$CFLAGS" LIBS="conftestm.$ac_objext" CFLAGS="$CFLAGS$no_builtin_flag" if AC_TRY_EVAL(ac_link) && test -s conftest; then ac_pipe_works=yes else echo "configure: failed program was:" >&AC_FD_CC cat conftest.c >&AC_FD_CC fi LIBS="$ac_save_LIBS" CFLAGS="$ac_save_CFLAGS" else echo "cannot find nm_test_func in $ac_nlist" >&AC_FD_CC fi else echo "cannot find nm_test_var in $ac_nlist" >&AC_FD_CC fi else echo "cannot run $ac_cv_sys_global_symbol_pipe" >&AC_FD_CC fi else echo "$progname: failed program was:" >&AC_FD_CC cat conftest.c >&AC_FD_CC fi rm -rf conftest* # Do not use the global_symbol_pipe unless it works. test "$ac_pipe_works" = yes || ac_cv_sys_global_symbol_pipe= ]) ac_result=yes if test -z "$ac_cv_sys_global_symbol_pipe"; then ac_result=no fi AC_MSG_RESULT($ac_result) ]) # GNUPG_SYS_LIBTOOL_CYGWIN32 - find tools needed on cygwin32 AC_DEFUN(GNUPG_SYS_LIBTOOL_CYGWIN32, [AC_CHECK_TOOL(DLLTOOL, dlltool, false) AC_CHECK_TOOL(AS, as, false) ]) # GNUPG_SYS_SYMBOL_UNDERSCORE - does the compiler prefix global symbols # with an underscore? AC_DEFUN(GNUPG_SYS_SYMBOL_UNDERSCORE, [tmp_do_check="no" case "${target}" in i386-emx-os2 | i[3456]86-pc-os2*emx | i386-pc-msdosdjgpp | *-*-cygwin) ac_cv_sys_symbol_underscore=yes ;; *) if test "$cross_compiling" = yes; then ac_cv_sys_symbol_underscore=yes else tmp_do_check="yes" fi ;; esac if test "$tmp_do_check" = "yes"; then AC_REQUIRE([GNUPG_PROG_NM])dnl AC_REQUIRE([GNUPG_SYS_NM_PARSE])dnl AC_MSG_CHECKING([for _ prefix in compiled symbols]) AC_CACHE_VAL(ac_cv_sys_symbol_underscore, [ac_cv_sys_symbol_underscore=no cat > conftest.$ac_ext < $ac_nlist) && test -s "$ac_nlist"; then # See whether the symbols have a leading underscore. if egrep '^_nm_test_func' "$ac_nlist" >/dev/null; then ac_cv_sys_symbol_underscore=yes else if egrep '^nm_test_func ' "$ac_nlist" >/dev/null; then : else echo "configure: cannot find nm_test_func in $ac_nlist" >&AC_FD_CC fi fi else echo "configure: cannot run $ac_cv_sys_global_symbol_pipe" >&AC_FD_CC fi else echo "configure: failed program was:" >&AC_FD_CC cat conftest.c >&AC_FD_CC fi rm -rf conftest* ]) else AC_MSG_CHECKING([for _ prefix in compiled symbols]) fi AC_MSG_RESULT($ac_cv_sys_symbol_underscore) if test x$ac_cv_sys_symbol_underscore = xyes; then AC_DEFINE(WITH_SYMBOL_UNDERSCORE,1, [Defined if compiled symbols have a leading underscore]) fi ]) dnl Stolen from gcc dnl Define MKDIR_TAKES_ONE_ARG if mkdir accepts only one argument instead dnl of the usual 2. AC_DEFUN(GNUPG_FUNC_MKDIR_TAKES_ONE_ARG, [AC_CHECK_HEADERS(sys/stat.h unistd.h direct.h) AC_CACHE_CHECK([if mkdir takes one argument], gnupg_cv_mkdir_takes_one_arg, [AC_TRY_COMPILE([ #include #ifdef HAVE_SYS_STAT_H # include #endif #ifdef HAVE_UNISTD_H # include #endif #ifdef HAVE_DIRECT_H # include #endif], [mkdir ("foo", 0);], gnupg_cv_mkdir_takes_one_arg=no, gnupg_cv_mkdir_takes_one_arg=yes)]) if test $gnupg_cv_mkdir_takes_one_arg = yes ; then AC_DEFINE(MKDIR_TAKES_ONE_ARG,1, [Defined if mkdir() does not take permission flags]) fi ])