dnl --------------------------------------------------------------------------- dnl dnl Macros for configure.in for wxWindows by Robert Roebling, Phil Blecker, dnl Vadim Zeitlin and Ron Lee dnl dnl This script is under the wxWindows licence. dnl dnl Version: $Id$ dnl --------------------------------------------------------------------------- dnl =========================================================================== dnl macros to find the a file in the list of include/lib paths dnl =========================================================================== dnl --------------------------------------------------------------------------- dnl call WX_PATH_FIND_INCLUDES(search path, header name), sets ac_find_includes dnl to the full name of the file that was found or leaves it empty if not found dnl --------------------------------------------------------------------------- AC_DEFUN([WX_PATH_FIND_INCLUDES], [ ac_find_includes= for ac_dir in $1 /usr/include; do if test -f "$ac_dir/$2"; then ac_find_includes=$ac_dir break fi done ]) dnl --------------------------------------------------------------------------- dnl call WX_PATH_FIND_LIBRARIES(search path, header name), sets ac_find_libraries dnl to the full name of the file that was found or leaves it empty if not found dnl --------------------------------------------------------------------------- AC_DEFUN([WX_PATH_FIND_LIBRARIES], [ ac_find_libraries= for ac_dir in $1 /usr/lib; do for ac_extension in a so sl dylib; do if test -f "$ac_dir/lib$2.$ac_extension"; then ac_find_libraries=$ac_dir break 2 fi done done ]) dnl --------------------------------------------------------------------------- dnl Path to include, already defined dnl --------------------------------------------------------------------------- AC_DEFUN([WX_INCLUDE_PATH_EXIST], [ dnl never add -I/usr/include to the CPPFLAGS if test "x$1" = "x/usr/include"; then ac_path_to_include="" else echo "$2" | grep "\-I$1" > /dev/null result=$? if test $result = 0; then ac_path_to_include="" else ac_path_to_include=" -I$1" fi fi ]) dnl --------------------------------------------------------------------------- dnl Path to link, already defined dnl --------------------------------------------------------------------------- AC_DEFUN([WX_LINK_PATH_EXIST], [ echo "$2" | grep "\-L$1" > /dev/null result=$? if test $result = 0; then ac_path_to_link="" else ac_path_to_link=" -L$1" fi ]) dnl =========================================================================== dnl C++ features test dnl =========================================================================== dnl --------------------------------------------------------------------------- dnl WX_CPP_NEW_HEADERS checks whether the compiler has "new" <iostream> header dnl or only the old <iostream.h> one - it may be generally assumed that if dnl <iostream> exists, the other "new" headers (without .h) exist too. dnl dnl call WX_CPP_NEW_HEADERS(actiof-if-true, action-if-false) dnl --------------------------------------------------------------------------- AC_DEFUN([WX_CPP_NEW_HEADERS], [ AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_CHECK_HEADERS(iostream) if test "$ac_cv_header_iostream" = "yes" ; then ifelse([$1], , :, [$1]) else ifelse([$2], , :, [$2]) fi AC_LANG_RESTORE ]) dnl --------------------------------------------------------------------------- dnl WX_CPP_BOOL checks whether the C++ compiler has a built in bool type dnl dnl call WX_CPP_BOOL - will define HAVE_BOOL if the compiler supports bool dnl --------------------------------------------------------------------------- AC_DEFUN([WX_CPP_BOOL], [ AC_CACHE_CHECK([if C++ compiler supports bool], wx_cv_cpp_bool, [ AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_TRY_COMPILE( [ ], [ bool b = true; return 0; ], [ wx_cv_cpp_bool=yes ], [ wx_cv_cpp_bool=no ] ) AC_LANG_RESTORE ]) if test "$wx_cv_cpp_bool" = "yes"; then AC_DEFINE(HAVE_BOOL) fi ]) dnl --------------------------------------------------------------------------- dnl WX_CPP_EXPLICIT checks whether the C++ compiler support the explicit dnl keyword and defines HAVE_EXPLICIT if this is the case dnl --------------------------------------------------------------------------- AC_DEFUN([WX_CPP_EXPLICIT], [ AC_CACHE_CHECK([if C++ compiler supports the explicit keyword], wx_cv_explicit, [ AC_LANG_SAVE AC_LANG_CPLUSPLUS dnl do the test in 2 steps: first check that the compiler knows about the dnl explicit keyword at all and then verify that it really honours it AC_TRY_COMPILE( [ class Foo { public: explicit Foo(int) {} }; ], [ return 0; ], [ AC_TRY_COMPILE( [ class Foo { public: explicit Foo(int) {} }; static void TakeFoo(const Foo& foo) { } ], [ TakeFoo(17); return 0; ], wx_cv_explicit=no, wx_cv_explicit=yes ) ], wx_cv_explicit=no ) AC_LANG_RESTORE ]) if test "$wx_cv_explicit" = "yes"; then AC_DEFINE(HAVE_EXPLICIT) fi ]) dnl --------------------------------------------------------------------------- dnl a slightly better AC_C_BIGENDIAN macro which allows cross-compiling dnl --------------------------------------------------------------------------- AC_DEFUN([WX_C_BIGENDIAN], [AC_CACHE_CHECK([whether byte ordering is bigendian], ac_cv_c_bigendian, [ac_cv_c_bigendian=unknown # See if sys/param.h defines the BYTE_ORDER macro. AC_TRY_COMPILE([#include <sys/types.h> #include <sys/param.h>], [ #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 <sys/types.h> #include <sys/param.h>], [ #if BYTE_ORDER != BIG_ENDIAN not big endian #endif], ac_cv_c_bigendian=yes, ac_cv_c_bigendian=no)]) if test $ac_cv_c_bigendian = 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); }], [ac_cv_c_bigendian=no], [ac_cv_c_bigendian=yes], [ac_cv_c_bigendian=unknown]) fi]) if test $ac_cv_c_bigendian = unknown; then AC_MSG_WARN([Assuming little-endian target machine - this may be overriden by adding the line "ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}" to config.cache file]) fi if test $ac_cv_c_bigendian = yes; then AC_DEFINE(WORDS_BIGENDIAN) fi ]) dnl --------------------------------------------------------------------------- dnl override AC_ARG_ENABLE/WITH to cache the results in .cache file dnl --------------------------------------------------------------------------- AC_DEFUN([WX_ARG_CACHE_INIT], [ wx_arg_cache_file="configarg.cache" echo "loading argument cache $wx_arg_cache_file" rm -f ${wx_arg_cache_file}.tmp touch ${wx_arg_cache_file}.tmp touch ${wx_arg_cache_file} ]) AC_DEFUN([WX_ARG_CACHE_FLUSH], [ echo "saving argument cache $wx_arg_cache_file" mv ${wx_arg_cache_file}.tmp ${wx_arg_cache_file} ]) dnl this macro checks for a three-valued command line --with argument: dnl possible arguments are 'yes', 'no', 'sys', or 'builtin' dnl usage: WX_ARG_SYS_WITH(option, helpmessage, variable-name) AC_DEFUN([WX_ARG_SYS_WITH], [ AC_MSG_CHECKING([for --with-$1]) no_cache=0 AC_ARG_WITH($1, [$2], [ if test "$withval" = yes; then ac_cv_use_$1='$3=yes' elif test "$withval" = no; then ac_cv_use_$1='$3=no' elif test "$withval" = sys; then ac_cv_use_$1='$3=sys' elif test "$withval" = builtin; then ac_cv_use_$1='$3=builtin' else AC_MSG_ERROR([Invalid value for --with-$1: should be yes, no, sys, or builtin]) fi ], [ LINE=`grep "$3" ${wx_arg_cache_file}` if test "x$LINE" != x ; then eval "DEFAULT_$LINE" else no_cache=1 fi ac_cv_use_$1='$3='$DEFAULT_$3 ]) eval "$ac_cv_use_$1" if test "$no_cache" != 1; then echo $ac_cv_use_$1 >> ${wx_arg_cache_file}.tmp fi if test "$$3" = yes; then AC_MSG_RESULT(yes) elif test "$$3" = no; then AC_MSG_RESULT(no) elif test "$$3" = sys; then AC_MSG_RESULT([system version]) elif test "$$3" = builtin; then AC_MSG_RESULT([builtin version]) else AC_MSG_ERROR([Invalid value for --with-$1: should be yes, no, sys, or builtin]) fi ]) dnl this macro checks for a command line argument and caches the result dnl usage: WX_ARG_WITH(option, helpmessage, variable-name) AC_DEFUN([WX_ARG_WITH], [ AC_MSG_CHECKING([for --with-$1]) no_cache=0 AC_ARG_WITH($1, [$2], [ if test "$withval" = yes; then ac_cv_use_$1='$3=yes' else ac_cv_use_$1='$3=no' fi ], [ LINE=`grep "$3" ${wx_arg_cache_file}` if test "x$LINE" != x ; then eval "DEFAULT_$LINE" else no_cache=1 fi ac_cv_use_$1='$3='$DEFAULT_$3 ]) eval "$ac_cv_use_$1" if test "$no_cache" != 1; then echo $ac_cv_use_$1 >> ${wx_arg_cache_file}.tmp fi if test "$$3" = yes; then AC_MSG_RESULT(yes) else AC_MSG_RESULT(no) fi ]) dnl like WX_ARG_WITH but uses AC_ARG_ENABLE instead of AC_ARG_WITH dnl usage: WX_ARG_ENABLE(option, helpmessage, variable-name, enablestring) dnl dnl enablestring is a hack and allows to show "checking for --disable-foo" dnl message when running configure instead of the default "checking for dnl --enable-foo" one whih is useful for the options enabled by default AC_DEFUN([WX_ARG_ENABLE], [ enablestring=$4 AC_MSG_CHECKING([for --${enablestring:-enable}-$1]) no_cache=0 AC_ARG_ENABLE($1, [$2], [ if test "$enableval" = yes; then ac_cv_use_$1='$3=yes' else ac_cv_use_$1='$3=no' fi ], [ LINE=`grep "$3" ${wx_arg_cache_file}` if test "x$LINE" != x ; then eval "DEFAULT_$LINE" else no_cache=1 fi ac_cv_use_$1='$3='$DEFAULT_$3 ]) eval "$ac_cv_use_$1" if test "$no_cache" != 1; then echo $ac_cv_use_$1 >> ${wx_arg_cache_file}.tmp fi if test "$$3" = yes; then AC_MSG_RESULT(yes) else AC_MSG_RESULT(no) fi ]) dnl =========================================================================== dnl Linker features test dnl =========================================================================== dnl --------------------------------------------------------------------------- dnl WX_VERSIONED_SYMBOLS checks whether the linker can create versioned dnl symbols. If it can, sets LDFLAGS_VERSIONING to $CXX flags needed to use dnl version script file named versionfile dnl dnl call WX_VERSIONED_SYMBOLS(versionfile) dnl --------------------------------------------------------------------------- AC_DEFUN([WX_VERSIONED_SYMBOLS], [ found_versioning=no dnl FIXME - doesn't work, Solaris linker doesn't accept wildcards dnl in the script. dnl dnl Check for known non-gcc cases: dnl case "${host}" in dnl *-*-solaris2* ) dnl if test "x$GCC" != "xyes" ; then dnl LDFLAGS_VERSIONING="-M $1" dnl found_versioning=yes dnl fi dnl ;; dnl esac dnl Generic check for GCC or GCC-like behaviour (Intel C++, GCC): if test $found_versioning = no ; then AC_CACHE_CHECK([if the linker accepts --version-script], wx_cv_version_script, [ echo "VER_1 { *; };" >conftest.sym echo "int main() { return 0; }" >conftest.cpp if AC_TRY_COMMAND([ $CXX -o conftest.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp -Wl,--version-script,conftest.sym >/dev/null 2>conftest.stderr]) ; then if test -s conftest.stderr ; then wx_cv_version_script=no else wx_cv_version_script=yes fi else wx_cv_version_script=no fi rm -f conftest.output conftest.stderr conftest.sym conftest.cpp ]) if test $wx_cv_version_script = yes ; then LDFLAGS_VERSIONING="-Wl,--version-script,$1" fi fi ]) dnl =========================================================================== dnl "3rd party" macros included here because they are not widely available dnl =========================================================================== dnl --------------------------------------------------------------------------- dnl test for availability of iconv() dnl --------------------------------------------------------------------------- dnl From Bruno Haible. AC_DEFUN([AM_ICONV], [ dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and dnl those with the standalone portable GNU libiconv installed). AC_ARG_WITH([libiconv-prefix], [ --with-libiconv-prefix=DIR search for libiconv in DIR/include and DIR/lib], [ for dir in `echo "$withval" | tr : ' '`; do if test -d $dir/include; then CPPFLAGS="$CPPFLAGS -I$dir/include"; fi if test -d $dir/lib; then LDFLAGS="$LDFLAGS -L$dir/lib"; fi done ]) AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [ am_cv_func_iconv="no, consider installing GNU libiconv" am_cv_lib_iconv=no AC_TRY_LINK([#include <stdlib.h> #include <iconv.h>], [iconv_t cd = iconv_open("",""); iconv(cd,NULL,NULL,NULL,NULL); iconv_close(cd);], am_cv_func_iconv=yes) if test "$am_cv_func_iconv" != yes; then am_save_LIBS="$LIBS" LIBS="$LIBS -liconv" AC_TRY_LINK([#include <stdlib.h> #include <iconv.h>], [iconv_t cd = iconv_open("",""); iconv(cd,NULL,NULL,NULL,NULL); iconv_close(cd);], am_cv_lib_iconv=yes am_cv_func_iconv=yes) LIBS="$am_save_LIBS" fi ]) if test "$am_cv_func_iconv" = yes; then AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.]) AC_CACHE_CHECK([if iconv needs const], wx_cv_func_iconv_const, AC_TRY_COMPILE([ #include <stdlib.h> #include <iconv.h> extern #ifdef __cplusplus "C" #endif #if defined(__STDC__) || defined(__cplusplus) size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft); #else size_t iconv(); #endif ], [], wx_cv_func_iconv_const="no", wx_cv_func_iconv_const="yes" ) ) iconv_const= if test "x$wx_cv_func_iconv_const" = "xyes"; then iconv_const="const" fi AC_DEFINE_UNQUOTED(ICONV_CONST, $iconv_const, [Define as const if the declaration of iconv() needs const.]) fi LIBICONV= if test "$am_cv_lib_iconv" = yes; then LIBICONV="-liconv" fi AC_SUBST(LIBICONV) ]) dnl --------------------------------------------------------------------------- dnl AC_SYS_LARGEFILE (partly based on the code from autoconf 2.5x) dnl --------------------------------------------------------------------------- dnl WX_SYS_LARGEFILE_TEST dnl dnl NB: original autoconf test was checking if compiler supported 6 bit off_t dnl arithmetic properly but this failed miserably with gcc under Linux dnl whereas the system still supports 64 bit files, so now simply check dnl that off_t is big enough define(WX_SYS_LARGEFILE_TEST, [typedef struct { unsigned int field: sizeof(off_t) == 8; } wxlf; ]) dnl WX_SYS_LARGEFILE_MACRO_VALUE(C-MACRO, VALUE, CACHE-VAR) define(WX_SYS_LARGEFILE_MACRO_VALUE, [ AC_CACHE_CHECK([for $1 value needed for large files], [$3], [ AC_TRY_COMPILE([#define $1 $2 #include <sys/types.h>], WX_SYS_LARGEFILE_TEST, [$3=$2], [$3=no]) ] ) if test "$$3" != no; then wx_largefile=yes AC_DEFINE_UNQUOTED([$1], [$$3]) fi ]) dnl AC_SYS_LARGEFILE dnl ---------------- dnl By default, many hosts won't let programs access large files; dnl one must use special compiler options to get large-file access to work. dnl For more details about this brain damage please see: dnl http://www.sas.com/standards/large.file/x_open.20Mar96.html AC_DEFUN([AC_SYS_LARGEFILE], [AC_ARG_ENABLE(largefile, [ --disable-largefile omit support for large files]) if test "$enable_largefile" != no; then dnl _FILE_OFFSET_BITS==64 is needed for Linux, Solaris, ... dnl _LARGE_FILES -- for AIX wx_largefile=no WX_SYS_LARGEFILE_MACRO_VALUE(_FILE_OFFSET_BITS, 64, ac_cv_sys_file_offset_bits) if test "x$wx_largefile" != "xyes"; then WX_SYS_LARGEFILE_MACRO_VALUE(_LARGE_FILES, 1, ac_cv_sys_large_files) fi AC_MSG_CHECKING(if large file support is available) if test "x$wx_largefile" = "xyes"; then AC_DEFINE(HAVE_LARGEFILE_SUPPORT) fi AC_MSG_RESULT($wx_largefile) fi ]) dnl Available from the GNU Autoconf Macro Archive at: dnl http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_const_cast.html dnl AC_DEFUN([AC_CXX_CONST_CAST], [AC_CACHE_CHECK(whether the compiler supports const_cast<>, ac_cv_cxx_const_cast, [AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_TRY_COMPILE(,[int x = 0;const int& y = x;int& z = const_cast<int&>(y);return z;], ac_cv_cxx_const_cast=yes, ac_cv_cxx_const_cast=no) AC_LANG_RESTORE ]) if test "$ac_cv_cxx_const_cast" = yes; then AC_DEFINE(HAVE_CONST_CAST,,[define if the compiler supports const_cast<>]) fi ]) dnl http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_reinterpret_cast.html AC_DEFUN([AC_CXX_REINTERPRET_CAST], [AC_CACHE_CHECK(whether the compiler supports reinterpret_cast<>, ac_cv_cxx_reinterpret_cast, [AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_TRY_COMPILE([#include <typeinfo> class Base { public : Base () {} virtual void f () = 0;}; class Derived : public Base { public : Derived () {} virtual void f () {} }; class Unrelated { public : Unrelated () {} }; int g (Unrelated&) { return 0; }],[ Derived d;Base& b=d;Unrelated& e=reinterpret_cast<Unrelated&>(b);return g(e);], ac_cv_cxx_reinterpret_cast=yes, ac_cv_cxx_reinterpret_cast=no) AC_LANG_RESTORE ]) if test "$ac_cv_cxx_reinterpret_cast" = yes; then AC_DEFINE(HAVE_REINTERPRET_CAST,, [define if the compiler supports reinterpret_cast<>]) fi ]) dnl and http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_static_cast.html AC_DEFUN([AC_CXX_STATIC_CAST], [AC_CACHE_CHECK(whether the compiler supports static_cast<>, ac_cv_cxx_static_cast, [AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_TRY_COMPILE([#include <typeinfo> class Base { public : Base () {} virtual void f () = 0; }; class Derived : public Base { public : Derived () {} virtual void f () {} }; int g (Derived&) { return 0; }],[ Derived d; Base& b = d; Derived& s = static_cast<Derived&> (b); return g (s);], ac_cv_cxx_static_cast=yes, ac_cv_cxx_static_cast=no) AC_LANG_RESTORE ]) if test "$ac_cv_cxx_static_cast" = yes; then AC_DEFINE(HAVE_STATIC_CAST,, [define if the compiler supports static_cast<>]) fi ])