+AC_SEARCH_LIBS(socket, socket)
+AC_SEARCH_LIBS(gethostbyname, nsl)
+
+save_LIBS="$LIBS"
+LIBS="$LIBS -lm"
+AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[
+#include <stdlib.h>
+ ]],[[
+ float f= floorf((float) 1.0);
+ ]],
+ [LIBM="-lm"],[LIBM=""])])
+
+AC_SUBST(LIBM)
+LIBS="$save_LIBS"
+
+AC_SEARCH_LIBS(floorf, m)
+
+dnl Specialty checks
+DETECT_BYTEORDER
+ENABLE_UTILLIB
+ENABLE_DTRACE
+SETSOCKOPT_SANITY
+ENABLE_HSIEH_HASH
+REQUIRE_POD2MAN
+PROTOCOL_BINARY_TEST
+WITH_MEMCACHED
+ENABLE_DEPRECATED
+
+dnl TODO: Remove this define once we are using 2.61 across the board.
+# AX_HEADER_ASSERT
+# ----------------
+# Check whether to enable assertions.
+AC_DEFUN([AX_HEADER_ASSERT],
+[
+ AC_MSG_CHECKING([whether to enable assertions])
+ AC_ARG_ENABLE([assert],
+ [AS_HELP_STRING([--disable-assert],
+ [Turn off assertions])],
+ [ac_cv_assert="no"],
+ [ac_cv_assert="yes"])
+ AC_MSG_RESULT([$ac_cv_assert])
+])
+AX_HEADER_ASSERT
+
+
+AC_ARG_WITH([debug],
+ [AS_HELP_STRING([--with-debug],
+ [Add debug code/turns off optimizations (yes|no) @<:@default=no@:>@])],
+ [with_debug=$withval],
+ [with_debug=no])
+if test "$with_debug" = "yes"
+then
+ # Debugging. No optimization.
+ CFLAGS="${DEBUG_CFLAGS} -DDEBUG ${CFLAGS}"
+ CXXFLAGS="${DEBUG_CXXFLAGS} -DDEBUG ${CXXFLAGS}"
+else
+ # Optimized version. No debug
+ CFLAGS="${OPTIMIZE_CFLAGS} ${CFLAGS}"
+ CXXFLAGS="${OPTIMIZE_CXXFLAGS} ${CXXFLAGS}"
+fi
+
+AC_ARG_ENABLE([profiling],
+ [AS_HELP_STRING([--enable-profiling],
+ [Toggle profiling @<:@default=off@:>@])],
+ [ac_profiling="$enableval"],
+ [ac_profiling="no"])
+
+AC_ARG_ENABLE([coverage],
+ [AS_HELP_STRING([--enable-coverage],
+ [Toggle coverage @<:@default=off@:>@])],
+ [ac_coverage="$enableval"],
+ [ac_coverage="no"])
+
+if test "$GCC" = "yes"
+then
+
+ AC_CACHE_CHECK([whether it is safe to use -fdiagnostics-show-option],
+ [ac_cv_safe_to_use_fdiagnostics_show_option_],
+ [save_CFLAGS="$CFLAGS"
+ CFLAGS="-fdiagnostics-show-option ${CFLAGS}"
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([],[])],
+ [ac_cv_safe_to_use_fdiagnostics_show_option_=yes],
+ [ac_cv_safe_to_use_fdiagnostics_show_option_=no])
+ CFLAGS="$save_CFLAGS"])
+
+ AS_IF([test "$ac_cv_safe_to_use_fdiagnostics_show_option_" = "yes"],
+ [
+ F_DIAGNOSTICS_SHOW_OPTION="-fdiagnostics-show-option"
+ ])
+
+ AC_CACHE_CHECK([whether it is safe to use -Wconversion],
+ [ac_cv_safe_to_use_wconversion_],
+ [save_CFLAGS="$CFLAGS"
+ CFLAGS="-Werror -Wconversion ${CFLAGS}"
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[
+#include <stdbool.h>
+void foo(bool a)
+{
+ (void)a;
+}
+ ]],[[
+foo(0);
+ ]])],
+ [ac_cv_safe_to_use_wconversion_=yes],
+ [ac_cv_safe_to_use_wconversion_=no])
+ CFLAGS="$save_CFLAGS"])
+
+ AS_IF([test "$ac_cv_safe_to_use_wconversion_" = "yes"],
+ [W_CONVERSION="-Wconversion"
+ AC_CACHE_CHECK([whether it is safe to use -Wconversion with htons],
+ [ac_cv_safe_to_use_Wconversion_],
+ [save_CFLAGS="$CFLAGS"
+ CFLAGS="-Werror -Wconversion ${CFLAGS}"
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[
+#include <netinet/in.h>
+ ]],[[
+uint16_t x= htons(80);
+ ]])],
+ [ac_cv_safe_to_use_Wconversion_=yes],
+ [ac_cv_safe_to_use_Wconversion_=no])
+ CFLAGS="$save_CFLAGS"])
+
+ AS_IF([test "$ac_cv_safe_to_use_Wconversion_" = "no"],
+ [
+ NO_CONVERSION="-Wno-conversion"
+ ])
+ ])
+
+ AS_IF([test "$ac_profiling" = "yes"],
+ [CC_PROFILING="-pg"])
+
+ AS_IF([test "$ac_coverage" = "yes"],
+ [CC_COVERAGE="-fprofile-arcs -ftest-coverage"])
+
+ AS_IF([test "$building_from_bzr" = "yes"],
+ [W_FAIL="-Werror"])
+
+ BASE_WARNINGS="-pedantic -Wall -Wextra ${W_FAIL} -Wundef -Wshadow -Wmissing-declarations -Wstrict-aliasing -Wformat=2 ${F_DIAGNOSTICS_SHOW_OPTION} ${W_CONVERSION}"
+ CC_WARNINGS="${BASE_WARNINGS} -Wstrict-prototypes -Wmissing-prototypes -Wredundant-decls -Wswitch-default -Wswitch-enum -Wcast-align"
+ CXX_WARNINGS="${BASE_WARNINGS} -Woverloaded-virtual -Wnon-virtual-dtor -Wctor-dtor-privacy -Wold-style-cast -Weffc++ -Wno-long-long"
+
+ AC_CACHE_CHECK([whether it is safe to use -Wlogical-op],
+ [ac_cv_safe_to_use_Wlogical_op_],
+ [save_CFLAGS="$CFLAGS"
+ CFLAGS="-Wlogical-op"
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM(
+ [[
+#include <stdio>
+ ]], [[]])
+ ],
+ [ac_cv_safe_to_use_Wlogical_op_=yes],
+ [ac_cv_safe_to_use_Wlogical_op_=no])
+ CFLAGS="$save_CFLAGS"])
+ AS_IF([test "$ac_cv_safe_to_use_Wlogical_op_" = "yes"],
+ [CC_WARNINGS="${CC_WARNINGS} -Wlogical-op"])
+
+ AC_CACHE_CHECK([whether it is safe to use -Wredundant-decls from C++],
+ [ac_cv_safe_to_use_Wredundant_decls_],
+ [AC_LANG_PUSH(C++)
+ save_CXXFLAGS="${CXXFLAGS}"
+ CXXFLAGS="${CXXFLAGS} ${W_FAIL} -Wredundant-decls"
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([
+template <typename E> struct C { void foo(); };
+template <typename E> void C<E>::foo() { }
+template <> void C<int>::foo();
+ AC_INCLUDES_DEFAULT])],
+ [ac_cv_safe_to_use_Wredundant_decls_=yes],
+ [ac_cv_safe_to_use_Wredundant_decls_=no])
+ CXXFLAGS="${save_CXXFLAGS}"
+ AC_LANG_POP()])
+ AS_IF([test "$ac_cv_safe_to_use_Wredundant_decls_" = "yes"],
+ [CXX_WARNINGS="${CXX_WARNINGS} -Wredundant-decls"],
+ [CXX_WARNINGS="${CXX_WARNINGS} -Wno-redundant-decls"])
+
+ NO_REDUNDANT_DECLS="-Wno-redundant-decls"
+fi
+if test "$SUNCC" = "yes"
+then
+
+ AS_IF([test "$ac_profiling" = "yes"],
+ [CC_PROFILING="-xinstrument=datarace"])
+
+ AS_IF([test "$building_from_bzr" = "yes"],
+ [W_FAIL="-errwarn=%all"])
+
+ AC_CACHE_CHECK([whether E_PASTE_RESULT_NOT_TOKEN is usable],
+ [ac_cv_paste_result],
+ [
+ save_CFLAGS="${CFLAGS}"
+ CFLAGS="-errwarn=%all -erroff=E_PASTE_RESULT_NOT_TOKEN ${CFLAGS}"
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([
+ AC_INCLUDES_DEFAULT
+ ],[
+ int x= 0;])],
+ [ac_cv_paste_result=yes],
+ [ac_cv_paste_result=no])
+ CFLAGS="${save_CFLAGS}"
+ ])
+ AS_IF([test $ac_cv_paste_result = yes],
+ [W_PASTE_RESULT=",E_PASTE_RESULT_NOT_TOKEN"])
+
+
+ CC_WARNINGS="-v -errtags=yes ${W_FAIL} -erroff=E_INTEGER_OVERFLOW_DETECTED${W_PASTE_RESULT}"
+ CXX_WARNINGS="+w +w2 -xwe -xport64 -errtags=yes ${W_FAIL}"
+fi
+
+AC_SUBST(NO_CONVERSION)
+AC_SUBST(NO_REDUNDANT_DECLS)
+
+AM_CPPFLAGS="-I\$(top_srcdir) -I\$(top_builddir) ${CPPFLAGS}"
+AM_CFLAGS="${CC_WARNINGS} ${CC_PROFILING} ${CC_COVERAGE} ${CFLAGS}"
+AM_CXXFLAGS="${CXX_WARNING} ${CC_PROFILING} ${CC_COVERAGE} ${CXXFLAGS}"
+
+AC_SUBST([AM_CPPFLAGS])
+AC_SUBST([AM_CFLAGS])
+AC_SUBST([AM_CXXFLAGS])
+
+dnl We've collected the flags in AM_*FLAGS now, so blank these.
+CFLAGS=""
+CXXFLAGS=""
+CPPFLAGS=""
+
+AC_CONFIG_FILES([
+ Makefile
+ clients/Makefile
+ tests/Makefile
+ docs/Makefile
+ libmemcached/Makefile
+ libmemcached/memcached_configure.h
+ libmemcachedutil/Makefile
+ support/Makefile
+ support/libmemcached.pc
+ support/libmemcached.spec
+ support/libmemcached-fc.spec
+ ])
+AC_OUTPUT
+
+echo "---"
+echo "Configuration summary for $PACKAGE_NAME version $VERSION"
+echo ""
+echo " * Installation prefix: $prefix"
+echo " * System type: $host_vendor-$host_os"
+echo " * Host CPU: $host_cpu"
+echo " * C Compiler: $CC_VERSION"
+echo " * Assertions enabled: $ac_cv_assert"
+echo " * Debug enabled: $with_debug"
+echo " * Warnings as failure: $building_from_bzr"
+echo ""
+echo "---"
+