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+ dnl ##
+ dnl ## sio - OSSP Assembly Line
+ dnl ## Copyright (c) 2002 Ralf S. Engelschall <rse@engelschall.com>
+ dnl ## Copyright (c) 2002 The OSSP Project <http://www.ossp.org/>
+ dnl ## Copyright (c) 2002 Cable & Wireless Deutschland <http://www.cw.com/de/>
+ dnl ## Copyright (c) 2002 Michael van Elst <mlelstv@dev.de.cw.net>
+ dnl ##
+ dnl ## This file is part of OSSP sio, an abstract data type of
+ dnl ## a pair of half-duplex data pipes which can be found at
+ dnl ## http://www.ossp.org/pkg/lib/sio/.
+ dnl ##
+ dnl ## Permission to use, copy, modify, and distribute this software for
+ dnl ## any purpose with or without fee is hereby granted, provided that
+ dnl ## the above copyright notice and this permission notice appear in all
+ dnl ## copies.
+ dnl ##
+ dnl ## THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ dnl ## WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ dnl ## MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ dnl ## IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
+ dnl ## CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ dnl ## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ dnl ## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ dnl ## USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ dnl ## ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ dnl ## OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ dnl ## OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ dnl ## SUCH DAMAGE.
+ dnl ##
+ dnl ## aclocal.m4: GNU Autoconf local macro definitions
+ dnl ##
+
+ dnl ##
+ dnl ## Check whether compiler option works
+ dnl ##
+ dnl ## configure.in:
+ dnl ## AC_COMPILER_OPTION(<name>, <display>, <option>,
+ dnl ## <action-success>, <action-failure>)
+ dnl ##
+
+ AC_DEFUN(AC_COMPILER_OPTION,[dnl
+ AC_MSG_CHECKING(whether compiler option(s) $2 work)
+ AC_CACHE_VAL(ac_cv_compiler_option_$1,[
+ SAVE_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS $3"
+ AC_TRY_COMPILE([],[], ac_cv_compiler_option_$1=yes, ac_cv_compiler_option_$1=no)
+ CFLAGS="$SAVE_CFLAGS"
+ ])dnl
+ if test ".$ac_cv_compiler_option_$1" = .yes; then
+ ifelse([$4], , :, [$4])
+ else
+ ifelse([$5], , :, [$5])
+ fi
+ AC_MSG_RESULT([$ac_cv_compiler_option_$1])
+ ])dnl
+
+ dnl ##
+ dnl ## Debugging Support
+ dnl ##
+ dnl ## configure.in:
+ dnl ## AC_CHECK_DEBUGGING
+ dnl ##
+
+ AC_DEFUN(AC_CHECK_DEBUGGING,[dnl
+ AC_ARG_ENABLE(debug,dnl
+ [ --enable-debug build for debugging (default=no)],
+ [dnl
+ if test ".$ac_cv_prog_gcc" = ".yes"; then
+ case "$CFLAGS" in
+ *-O* ) ;;
+ * ) CFLAGS="$CFLAGS -O2" ;;
+ esac
+ case "$CFLAGS" in
+ *-g* ) ;;
+ * ) CFLAGS="$CFLAGS -g" ;;
+ esac
+ case "$CFLAGS" in
+ *-pipe* ) ;;
+ * ) AC_COMPILER_OPTION(pipe, -pipe, -pipe, CFLAGS="$CFLAGS -pipe") ;;
+ esac
+ AC_COMPILER_OPTION(defdbg, -DDEBUG, -DDEBUG, CFLAGS="$CFLAGS -DDEBUG")
+ CFLAGS="$CFLAGS -pedantic"
+ CFLAGS="$CFLAGS -Wall"
+ WMORE="-Wshadow -Wpointer-arith -Wcast-align -Winline"
+ WMORE="$WMORE -Wmissing-prototypes -Wmissing-declarations -Wnested-externs"
+ AC_COMPILER_OPTION(wmore, -W<xxx>, $WMORE, CFLAGS="$CFLAGS $WMORE")
+ AC_COMPILER_OPTION(wnolonglong, -Wno-long-long, -Wno-long-long, CFLAGS="$CFLAGS -Wno-long-long")
+ else
+ case "$CFLAGS" in
+ *-g* ) ;;
+ * ) CFLAGS="$CFLAGS -g" ;;
+ esac
+ fi
+ msg="enabled"
+ ],[
+ if test ".$ac_cv_prog_gcc" = ".yes"; then
+ case "$CFLAGS" in
+ *-pipe* ) ;;
+ * ) AC_COMPILER_OPTION(pipe, -pipe, -pipe, CFLAGS="$CFLAGS -pipe") ;;
+ esac
+ fi
+ case "$CFLAGS" in
+ *-g* ) CFLAGS=`echo "$CFLAGS" |\
+ sed -e 's/ -g / /g' -e 's/ -g$//' -e 's/^-g //g' -e 's/^-g$//'` ;;
+ esac
+ case "$CXXFLAGS" in
+ *-g* ) CXXFLAGS=`echo "$CXXFLAGS" |\
+ sed -e 's/ -g / /g' -e 's/ -g$//' -e 's/^-g //g' -e 's/^-g$//'` ;;
+ esac
+ msg=disabled
+ ])dnl
+ AC_MSG_CHECKING(for compilation debug mode)
+ AC_MSG_RESULT([$msg])
+ if test ".$msg" = .enabled; then
+ enable_shared=no
+ fi
+ ])
+
+ dnl ##
+ dnl ## Check for an external/extension library.
+ dnl ## - is aware of <libname>-config style scripts
+ dnl ## - searches under standard paths include, lib, etc.
+ dnl ## - searches under subareas like .libs, etc.
+ dnl ##
+ dnl ## configure.in:
+ dnl ## AC_CHECK_EXTLIB(<realname>, <libname>, <func>, <header>,
+ dnl ## [<success-action> [, <fail-action>]])
+ dnl ## Makefile.in:
+ dnl ## CFLAGS = @CFLAGS@
+ dnl ## LDFLAGS = @LDFLAGS@
+ dnl ## LIBS = @LIBS@
+ dnl ## shell:
+ dnl ## $ ./configure --with-<libname>[=DIR]
+ dnl ##
+
+ AC_DEFUN(AC_CHECK_EXTLIB,[dnl
+ AC_ARG_WITH($2, [dnl
+ [ --with-]m4_substr([$2[[=DIR]] ], 0, 19)[build with external $1 library (default=no)]], [dnl
+ if test ".$with_$2" = .yes; then
+ # via config script in PATH
+ $2_version=`($2-config --version) 2>/dev/null`
+ if test ".$$2_version" != .; then
+ CPPFLAGS="$CPPFLAGS `$2-config --cflags`"
+ CFLAGS="$CFLAGS `$2-config --cflags`"
+ LDFLAGS="$LDFLAGS `$2-config --ldflags`"
+ fi
+ else
+ if test -d "$with_$2"; then
+ found=0
+ # via config script
+ for dir in $with_$2/bin $with_$2; do
+ if test -f "$dir/$2-config" && test ! -f "$dir/$2-config.in"; then
+ $2_version=`($dir/$2-config --version) 2>/dev/null`
+ if test ".$$2_version" != .; then
+ CPPFLAGS="$CPPFLAGS `$dir/$2-config --cflags`"
+ CFLAGS="$CFLAGS `$dir/$2-config --cflags`"
+ LDFLAGS="$LDFLAGS `$dir/$2-config --ldflags`"
+ found=1
+ break
+ fi
+ fi
+ done
+ # in standard sub-areas
+ if test ".$found" = .0; then
+ for dir in $with_$2/include/$2 $with_$2/include $with_$2; do
+ if test -f "$dir/$4"; then
+ CPPFLAGS="$CPPFLAGS -I$dir"
+ CFLAGS="$CFLAGS -I$dir"
+ found=1
+ break
+ fi
+ done
+ for dir in $with_$2/lib/$2 $with_$2/lib $with_$2; do
+ if test -f "$dir/lib$2.la" && test -d "$dir/.libs"; then
+ LDFLAGS="$LDFLAGS -L$dir -L$dir/.libs"
+ found=1
+ break
+ elif test -f "$dir/lib$2.a" || test -f "$dir/lib$2.so"; then
+ LDFLAGS="$LDFLAGS -L$dir"
+ found=1
+ break
+ fi
+ done
+ fi
+ # in any sub-area
+ if test ".$found" = .0; then
+ changequote(, )dnl
+ for file in x `find $with_$2 -name "$4" -type f -print`; do
+ test .$file = .x && continue
+ dir=`echo $file | sed -e 's;[^/]*$;;' -e 's;\(.\)/$;\1;'`
+ CPPFLAGS="$CPPFLAGS -I$dir"
+ CFLAGS="$CFLAGS -I$dir"
+ done
+ for file in x `find $with_$2 -name "lib$2.[aso]" -type f -print`; do
+ test .$file = .x && continue
+ dir=`echo $file | sed -e 's;[^/]*$;;' -e 's;\(.\)/$;\1;'`
+ LDFLAGS="$LDFLAGS -L$dir"
+ done
+ changequote([, ])dnl
+ fi
+ fi
+ fi
+ AC_HAVE_HEADERS($4)
+ AC_CHECK_LIB($2, $3)
+ with_$2=yes
+ ac_var="ac_cv_header_`echo $4 | sed 'y%./+-%__p_%'`"
+ eval "ac_val=\$$ac_var"
+ if test ".$ac_val" != .yes; then
+ with_$2=no
+ fi
+ if test ".$ac_cv_lib_$2_$3" != .yes; then
+ with_$2=no
+ fi
+ if test ".$with_$2" = .no; then
+ AC_ERROR([Unable to find $1 library])
+ fi
+ ], [dnl
+ if test ".$with_$2" = .; then
+ with_$2=no
+ fi
+ ])dnl
+ AC_MSG_CHECKING(whether to build against external $1 library)
+ if test ".$with_$2" = .yes; then
+ ifelse([$5], , :, [$5])
+ else
+ ifelse([$6], , :, [$6])
+ fi
+ AC_MSG_RESULT([$with_$2])
+ ])dnl
+
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