dnl ------------------------------------------------------------------------- dnl $Id: acinclude.m4 82832 2008-09-25 17:38:39Z jtc $ dnl dnl ACE M4 include file which contains general M4 macros dnl to be used by the ACE configure script. dnl dnl The macros in this file were designed for ACE but should be dnl general enough for general use. dnl dnl ------------------------------------------------------------------------- dnl Copyright (C) 1998, 1999, 2000, 2002 Ossama Othman dnl dnl All Rights Reserved dnl dnl This library is free software; you can redistribute it and/or dnl modify it under the current ACE distribution terms. dnl dnl This library 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. dnl miscellaneous macros dnl Prevent the configure script continuing any further if a CVS control dnl directory is found. The idea is to prevent files generated during dnl configuration and build from be checked in to the CVS repository that dnl the sources are checked into. This should only be an issue for dnl maintainers, not end-users. Maintainers should configure and build in dnl a directory that doesn't contain any CVS controlled sources and files, dnl i.e. that doesn't contain a CVS directory. dnl dnl Usage: ACE_CHECK_FOR_CVS_DIR AC_DEFUN([ACE_CHECK_FOR_CVS_DIR], [ if test -d CVS; then AC_MSG_ERROR( [ This error is meant for maintainers: Please configure and build in a non-CVS controlled directory. Doing so will prevent accidentally committing automatically generated files into the CVS repository and help ensure that the generated files and build scheme are correct. For example, try the following from the top-level source directory: mkdir objdir cd objdir ../configure make This will create a build space in the directory `objdir' and start a build in that directory. ]) fi ]) dnl Prevent the configure script from continuing any further if dnl configuration is being performed in the top-level directory. The dnl idea is to prevent files generated during configuration and build dnl from overwriting the stock files of the same name. dnl Usage: ACE_CHECK_TOP_SRCDIR AC_DEFUN([ACE_CHECK_TOP_SRCDIR], [ if test "$srcdir" = "." && test "$USE_MAINTAINER_MODE" != "yes"; then AC_MSG_ERROR( [ Please configure and build in a directory other than the top-level source directory. Doing so will prevent files distributed with the package from being overwritten. This is currently necessary since autoconf support is still experimental. If you encounter problems please use the stock build procedure. For example, try the following from the top-level source directory: mkdir objdir cd objdir ../configure make This will create a build space in the directory `objdir' and start a build in that directory. ]) fi ]) dnl Add compiler flags to the CXXFLAGS and CFLAGS variables when doing an dnl AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[],[]) (not ACE_TRY_COMPILE). dnl Use this macro when adding include directories to the compiler flags, dnl for example. dnl Usage: ACE_TRY_COMPILE(COMPILER-FLAGS, INCLUDES, FUNCTION-BODY, dnl [ACTION-IF-FOUND [,ACTION-IF-NOT-FOUND]]) AC_DEFUN([ACE_TRY_COMPILE], [ AC_LANG([C++]) AC_REQUIRE([AC_LANG]) ace_pre_try_CXXFLAGS="$CXXFLAGS" CXXFLAGS="$CXXFLAGS $1" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[$2]], [[$3]])],[$4],[$5]) dnl Restore the C++ flags CXXFLAGS="$ace_pre_try_CXXFLAGS" ]) dnl Create a temporary empty file and remove it after commands are done using dnl it. The directory in which the temporary file will be created in must dnl exist. Files will be created under the source directory, not the build dnl directory. dnl Use this macro when you need a particular file available but want it to be dnl empty. This is useful to prevent conflicts with autoconf's confdefs.h dnl header when doing an AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[],[]). dnl Usage: ACE_USE_TEMP_FILE(TEMP-FILE-TO-CREATE, COMMANDS-THAT-WILL-USE-IT) AC_DEFUN([ACE_USE_TEMP_FILE], [ test -d $1 && AC_MSG_ERROR([cannot create file: $acetmp is a directory]) dnl Make sure contents of existing file don't override the contents dnl of the temporary one. test -f ${srcdir}/$1 && mv ${srcdir}/$1 ${srcdir}/$1.conf if test ${srcdir} != "."; then dnl Create all of the sub-directories. AS_MKDIR_P([`AS_DIRNAME(["$1"])`]) fi touch $1 $2 if test -f ${srcdir}/$1.conf; then mv ${srcdir}/$1.conf ${srcdir}/$1 fi if test ${srcdir} != "."; then dnl Remove the file. Any sub-directories will not be removed dnl since we have no way to tell if they existed prior to the dnl creation of this file. rm $1 fi ]) dnl Run given test(s) with warnings converted to errors dnl Usage: ACE_CONVERT_WARNINGS_TO_ERRORS(TEST-BLOCK) AC_DEFUN([ACE_CONVERT_WARNINGS_TO_ERRORS], [ dnl $WERROR is set in the ACE_SET_COMPILER_FLAGS macro. AC_REQUIRE([ACE_SET_COMPILER_FLAGS]) dnl Some tests may pass because the compiler issues warnings dnl instead of errors when errors should occur. This macro converts dnl warnings to errors when executing the action/test passed to this dnl macro so that action/test fails when it is supposed to fail; at dnl least that is the idea. ace_pre_warning_CXXFLAGS="$CXXFLAGS" CXXFLAGS="$CXXFLAGS $WERROR" $1 CXXFLAGS="$ace_pre_warning_CXXFLAGS" ]) dnl Wrapper around AC_CACHE_VAL used to ensure "ACTION-IF" commands are run dnl even if results have been previously cached. dnl Usage: ACE_CACHE_CHECK(MESSAGE, CACHE-ID, COMMANDS-TO-SET-CACHE-VAL, dnl ACTION-IF-CACHE-ID-IS-YES, dnl ACTION-IF-CACHE-ID-IS-NO) dnl The COMMANDS-TO-SET-CACHE-VAL should set the CACHE-ID to yes or "no," dnl otherwise the "ACTION-IF*" commands may not run. The dnl COMMANDS-TO-SET-CACHE-VAL should only set the CACHE value. For example, dnl no AC_DEFINES should be placed in the COMMANDS-TO-SET-CACHE-VAL. AC_DEFUN([ACE_CACHE_CHECK], [ AC_MSG_CHECKING([$1]) AC_CACHE_VAL([$2], [$3]) AC_MSG_RESULT([[$]$2]) if test "[$]$2" != no; then ace_just_a_place_holder=fixme ifelse([$4], , :, [$4]) else ace_just_a_place_holder=fixme ifelse([$5], , , [$5 ]) fi ]) dnl checks for programs dnl checks for libraries dnl checks for header files dnl checks for typedefs dnl checks for structures dnl checks for variables dnl checks for compiler characteristics dnl checks for library functions dnl Check for function using prototype in header dnl This macro is used if a function is called a different name in a given dnl library than what is in the header file but the difference is made dnl transparent to the user since the header may provide a macro to make dnl things "transparent." If the given header does not exist then this dnl macro acts just like the standard AC_CHECK_FUNC macro. dnl Usage: ACE_CHECK_FUNC(FUNCTION, HEADER, dnl [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]) AC_DEFUN([ACE_CHECK_FUNC], [ dnl AC_REQUIRE([AC_PROG_CXX]) dnl AC_REQUIRE([AC_PROG_CXXCPP]) dnl AC_LANG([C++]) dnl AC_REQUIRE([AC_LANG]) AC_REQUIRE([AC_PROG_AWK]) AC_PREPROC_IFELSE([AC_LANG_SOURCE([[ #include <$2> ]])],[ace_header_exists=yes],[ace_header_exists=no]) cat > conftest.$ac_ext < ACE_REAL_FUNCTION $1 EOF if test "$ace_header_exists" = yes; then if test -z "$AWK"; then AC_MSG_WARN([No awk program found. Real $1 function may not be found.]) fi if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | $EGREP "ACE_REAL_FUNCTION" | (eval "$AWK '{print \[$]2}' > conftest.awk 2>&1"); then rm -f conftest.$ac_ext ace_real_function=`cat conftest.awk` rm -f conftest.awk fi if test $1 != "$ace_real_function"; then AC_MSG_CHECKING([for real $1 from $2]) AC_MSG_RESULT([$ace_real_function]) fi else ace_real_function=$1 fi dnl test "$ace_header_not_exist" != yes AC_CHECK_FUNC([$ace_real_function],[$3],[$4]) ]) dnl Check for function in library using prototype in header dnl This macro is used if a function is called a different name in a given dnl library than what is in the header file but the difference is made dnl transparent to the user since the header may provide a macro to make dnl things "transparent." If the given header does not exist then this dnl macro acts just like the standard AC_CHECK_LIB macro. dnl Usage: ACE_CHECK_LIB(LIBRARY, FUNCTION, HEADER, dnl [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]) AC_DEFUN([ACE_CHECK_LIB], [ dnl AC_REQUIRE([AC_PROG_CXX]) dnl AC_REQUIRE([AC_PROG_CXXCPP]) dnl AC_LANG([C++]) dnl AC_REQUIRE([AC_LANG]) AC_REQUIRE([AC_PROG_AWK]) AC_PREPROC_IFELSE([AC_LANG_SOURCE([[ #include <$3> ]])],[ace_header_exists=yes],[ace_header_exists=no]) cat > conftest.$ac_ext < ACE_REAL_FUNCTION $2 EOF if test "$ace_header_exists" = yes; then if test -z "$AWK"; then AC_MSG_WARN([No awk program found. "Real" function in library may not be found.]) fi if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | $EGREP "ACE_REAL_FUNCTION" | eval "$AWK '{print \[$]2}'" > conftest.awk 2>&1; then rm -f conftest.$ac_ext ace_real_function=`cat conftest.awk` rm -f conftest.awk fi if test $2 != "$ace_real_function"; then AC_MSG_CHECKING([for real $2 from $3]) AC_MSG_RESULT([$ace_real_function]) fi else ace_real_function=$2 fi dnl test "$ace_header_not_exist" != yes AC_CHECK_LIB([$1], [$ace_real_function], [$4], [$5]) ]) dnl Check if getrlimit() takes an enum as 1st argument dnl Usage: ACE_CHECK_SETRLIMIT_ENUM AC_DEFUN([ACE_CHECK_SETRLIMIT_ENUM], [ if test "$ac_cv_func_setrlimit" = yes; then AC_MSG_CHECKING([if setrlimit() takes an enum as 1st argument]) AC_EGREP_HEADER([setrlimit.*\(.*[^,]*enum], sys/resource.h, [ cat > conftest.$ac_ext < EOF dnl Here we attempt to determine the type of the first argument of dnl getrusage from its prototype. It should either be an int or an dnl enum. If it is an enum, determine the enum type. ace_setrlimit_enum=`eval "$ac_cpp conftest.$ac_ext" | \ $EGREP '[[ ]]+setrlimit.*\(.*[[^,]]*enum' | \ sed -e 's/^.*setrlimit.*(.*enum//' -e 's/[[^ ]]*,.*$//'` ace_setrlimit_enum="enum $ace_setrlimit_enum" AC_MSG_RESULT([$ace_setrlimit_enum]) if test -n "$ace_setrlimit_enum"; then AC_DEFINE_UNQUOTED([ACE_HAS_RLIMIT_RESOURCE_ENUM], [$ace_setrlimit_enum]) fi rm -rf conftest* dnl Do not remove this parenthesis --> ) dnl It's only purpose to keep Emacs from getting confused about mismatched dnl parentheses. ], [ AC_MSG_RESULT([no]) ]) fi dnl test "$ac_cv_func_setrlimit" = yes ]) dnl Check if getrusage() takes an enum as 1st argument dnl Usage: ACE_CHECK_GETRUSAGE_ENUM AC_DEFUN([ACE_CHECK_GETRUSAGE_ENUM], [ if test "$ac_cv_func_getrusage" = yes; then AC_MSG_CHECKING([if getrusage() takes an enum as 1st argument]) AC_EGREP_HEADER([getrusage.*\(.*[^,]*enum], [sys/resource.h], [ cat > conftest.$ac_ext < EOF dnl Here we attempt to determine the type of the first argument of dnl getrusage from its prototype. It should either be an int or an dnl enum. If it is an enum, determine the enum type. ace_rusage_who=`eval "$ac_cpp conftest.$ac_ext" | \ $EGREP '[[ ]]+getrusage.*\(.*[[^,]]*enum' | \ sed -e 's/^.*getrusage.*(.*enum//' -e 's/[[^ ]]*,.*$//'` ace_rusage_who="enum $ace_rusage_who" AC_MSG_RESULT([$ace_rusage_who]) if test -n "$ace_rusage_who"; then AC_DEFINE_UNQUOTED([ACE_HAS_RUSAGE_WHO_ENUM], [$ace_rusage_who]) fi rm -rf conftest* dnl Do not remove this parenthesis --> ) dnl It's only purpose to keep Emacs from getting confused about mismatched dnl parentheses. ], [ AC_MSG_RESULT([no]) ]) fi dnl test "$ac_cv_func_getrusage" = yes ]) dnl Check for 64 bit llseek() or lseek64() dnl Usage: ACE_CHECK_LSEEK64 AC_DEFUN([ACE_CHECK_LSEEK64], [ AH_TEMPLATE([ACE_HAS_LSEEK64], [Platform supports lseek64(). This should not be defined if ACE_HAS_LLSEEK is defined.]) AH_TEMPLATE([ACE_LACKS_LSEEK64_PROTOTYPE], [Platform/compiler lacks the lseek64() prototype. This should not be defined if ACE_LACKS_LLSEEK_PROTOTYPE is defined.]) AH_TEMPLATE([ACE_HAS_LLSEEK], [Platform supports llseek(). This should not be defined if ACE_HAS_LSEEK64 is defined.]) AH_TEMPLATE([ACE_LACKS_LLSEEK_PROTOTYPE], [Platform/compiler lacks the llseek() prototype. This should not be defined if ACE_LACKS_LSEEK64_PROTOTYPE is defined.]) AC_CHECK_FUNC([lseek64], [ AC_DEFINE([ACE_HAS_LSEEK64]) dnl Check for 64 bit offset type in the lseek64() prototype, if it dnl exists. dnl ACE_CHECK_OFF64_T([lseek64]) dnl Check if _LARGEFILE64_SOURCE macro is needed to make the dnl lseek64() prototype visible, or if the prototype itself is missing. ACE_CACHE_CHECK([for lseek64 prototype], [ace_cv_lib_has_lseek64_prototype], [ ace_save_CPPFLAGS="$CPPFLAGS" ace_no_largefile64="-U_LARGEFILE64_SOURCE" CPPFLAGS="$CPPFLAGS $ace_no_largefile64" AC_EGREP_HEADER([[^_]+lseek64], [unistd.h], [ ace_cv_lib_has_lseek64_prototype=yes ], [ ace_cv_lib_has_lseek64_prototype=no ]) dnl Reset the compiler flags CPPFLAGS="$ace_save_CPPFLAGS" ],[],[AC_DEFINE([ACE_LACKS_LSEEK64_PROTOTYPE])]) ], [ AC_CHECK_FUNC([llseek], [ AC_DEFINE([ACE_HAS_LLSEEK]) dnl Check if _LARGEFILE64_SOURCE macro is needed to make the dnl llseek() prototype visible, or if the prototype itself is dnl missing. dnl Check for 64 bit offset type in the llseek() prototype, if dnl it exists. dnl ACE_CHECK_OFF64_T([llseek]) ACE_CACHE_CHECK([for llseek prototype], [ace_cv_lib_has_llseek_prototype], [ ace_save_CPPFLAGS="$CPPFLAGS" ace_no_largefile64="-U_LARGEFILE64_SOURCE" CPPFLAGS="$CPPFLAGS $ace_no_largefile64" AC_EGREP_HEADER([[^_]+llseek],[unistd.h], [ ace_cv_lib_has_llseek_prototype=no ], [ ace_cv_lib_has_llseek_prototype=yes ],) dnl Reset the compiler flags CPPFLAGS="$ace_save_CPPFLAGS" ],[],[AC_DEFINE([ACE_LACKS_LLSEEK_PROTOTYPE])]) ],) ]) ]) dnl Check what the 64 bit offset type is by checking what the offset dnl argument for llseek()/lseek64() is. dnl Usage: ACE_CHECK_LOFF_64(LSEEK64-FUNC) AC_DEFUN([ACE_CHECK_OFF64_T], [ AC_MSG_CHECKING([for 64 bit offset type]) AC_EGREP_HEADER([[ ]+$1.*\(.*],[unistd.h], [ cat > conftest.$ac_ext < /* needed for lseek64()/llseek() prototype */ #endif EOF dnl Here we attempt to determine the type of the second argument of dnl lseek64()/llseek() from its prototype. ace_off64_t=`eval "$ac_cpp conftest.$ac_ext" | \ $EGREP '[[ ]]+lseek64.*\(.*' | \ sed -e 's/^.*(.*,[[ ]]*\(.*\) .*,.*$/\1/'` if test -n "$ace_off64_t"; then AC_MSG_RESULT([$ace_off64_t]) AC_DEFINE_UNQUOTED([ACE_LOFF_T_TYPEDEF], [$ace_off64_t]) fi rm -rf conftest* dnl Do not remove this parenthesis --> ) dnl It's only purpose is to keep Emacs from getting confused about dnl mismatched parentheses. ], [ AC_MSG_RESULT([no]) ]) ]) dnl checks for structures dnl checks for system services