mirror of
https://frontier.innolan.net/rainlance/c-ares.git
synced 2026-10-11 18:41:19 +00:00
Initial attempt to support configure's --(dis|en)able-optimize
option to specify dis(activation) of compiler optimizations. If option is specified, it will be honored independant of the --(dis|en)able-debug option.
This commit is contained in:
Yang Tse
+274
-32
@@ -16,7 +16,7 @@
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#***************************************************************************
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# File version for 'aclocal' use. Keep it a single number.
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# serial 2
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# serial 3
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dnl CARES_CHECK_COMPILER
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@@ -28,11 +28,33 @@ AC_DEFUN([CARES_CHECK_COMPILER], [
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compiler_id="unknown"
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compiler_num="0"
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#
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flags_dbg_all="unknown"
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flags_dbg_yes="unknown"
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flags_dbg_off="unknown"
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flags_opt_all="unknown"
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flags_opt_yes="unknown"
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flags_opt_off="unknown"
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#
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CARES_CHECK_COMPILER_DEC
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CARES_CHECK_COMPILER_IBM
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CARES_CHECK_COMPILER_INTEL
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CARES_CHECK_COMPILER_GNU
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#
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if test "$compiler_id" = "unknown"; then
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cat <<_EOF 1>&2
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***
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*** Warning: This configure script does not have information about the
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*** compiler you are using, relative to the flags required to enable or
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*** disable generation of debug info, optimization options or warnings.
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***
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*** Whatever settings are present in CFLAGS will be used for this run.
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***
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*** If you wish to help the c-ares project to better support your compiler
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*** you can report this and the required info on the c-ares development
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*** mailing list: http://cool.haxx.se/mailman/listinfo/c-ares/
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***
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_EOF
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fi
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])
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@@ -48,6 +70,12 @@ AC_DEFUN([CARES_CHECK_COMPILER_DEC], [
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test "$curl_cv_have_def___DECC_VER" = "yes"; then
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AC_MSG_RESULT([yes])
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compiler_id="DECC"
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flags_dbg_all="-g -g0 -g1 -g2 -g3"
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flags_dbg_yes="-g2"
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flags_dbg_off="-g0"
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flags_opt_all="-O -O0 -O1 -O2 -O3 -O4"
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flags_opt_yes="-O1"
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flags_opt_off="-O0"
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else
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AC_MSG_RESULT([no])
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fi
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@@ -71,6 +99,19 @@ AC_DEFUN([CARES_CHECK_COMPILER_GNU], [
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gccvhi=`echo $gccver | cut -d . -f1`
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gccvlo=`echo $gccver | cut -d . -f2`
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compiler_num=`(expr $gccvhi "*" 100 + $gccvlo) 2>/dev/null`
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flags_dbg_all="-g -g0 -g1 -g2 -g3"
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flags_dbg_all="$flags_dbg_all -ggdb"
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flags_dbg_all="$flags_dbg_all -gstabs"
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flags_dbg_all="$flags_dbg_all -gstabs+"
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flags_dbg_all="$flags_dbg_all -gcoff"
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flags_dbg_all="$flags_dbg_all -gxcoff"
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flags_dbg_all="$flags_dbg_all -gdwarf-2"
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flags_dbg_all="$flags_dbg_all -gvms"
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flags_dbg_yes="-g"
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flags_dbg_off="-g0"
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flags_opt_all="-O -O0 -O1 -O2 -O3 -Os"
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flags_opt_yes="-O2"
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flags_opt_off="-O0"
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else
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AC_MSG_RESULT([no])
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fi
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@@ -87,6 +128,19 @@ AC_DEFUN([CARES_CHECK_COMPILER_IBM], [
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if test "$curl_cv_have_def___IBMC__" = "yes"; then
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AC_MSG_RESULT([yes])
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compiler_id="IBMC"
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flags_dbg_all="-g -g0 -g1 -g2 -g3"
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flags_dbg_yes="-g"
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flags_dbg_off=""
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flags_opt_all="-O -O0 -O1 -O2 -O3 -O4 -O5"
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flags_opt_all="$flags_opt_all -qnooptimize"
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flags_opt_all="$flags_opt_all -qoptimize=0"
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flags_opt_all="$flags_opt_all -qoptimize=1"
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flags_opt_all="$flags_opt_all -qoptimize=2"
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flags_opt_all="$flags_opt_all -qoptimize=3"
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flags_opt_all="$flags_opt_all -qoptimize=4"
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flags_opt_all="$flags_opt_all -qoptimize=5"
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flags_opt_yes="-O2"
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flags_opt_off="-qnooptimize"
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else
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AC_MSG_RESULT([no])
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fi
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@@ -106,8 +160,27 @@ AC_DEFUN([CARES_CHECK_COMPILER_INTEL], [
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CURL_CHECK_DEF([__unix__], [], [silent])
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if test "$curl_cv_have_def___unix__" = "yes"; then
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compiler_id="ICC_unix"
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flags_dbg_all="-g -g0"
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flags_dbg_yes="-g -fp"
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flags_dbg_off="-g0"
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flags_opt_all="-O -O0 -O1 -O2 -O3 -Os"
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flags_opt_yes="-O2"
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flags_opt_off="-O0"
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else
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compiler_id="ICC_windows"
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flags_dbg_all="/ZI /Zi /zI /zi /ZD /Zd /zD /zd /Z7 /z7"
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flags_dbg_all="$flags_dbg_all /debug"
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flags_dbg_all="$flags_dbg_all /debug:none"
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flags_dbg_all="$flags_dbg_all /debug:minimal"
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flags_dbg_all="$flags_dbg_all /debug:partial"
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flags_dbg_all="$flags_dbg_all /debug:full"
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flags_dbg_all="$flags_dbg_all /debug:semantic_stepping"
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flags_dbg_all="$flags_dbg_all /debug:extended"
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flags_dbg_yes="/Zi /Oy-"
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flags_dbg_off=""
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flags_opt_all="/O /O0 /O1 /O2 /O3 /Os"
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flags_opt_yes="/O2"
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flags_opt_off=""
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fi
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compiler_num="$curl_cv_def___INTEL_COMPILER"
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else
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@@ -116,12 +189,13 @@ AC_DEFUN([CARES_CHECK_COMPILER_INTEL], [
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])
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dnl CARES_PROCESS_CC_BASIC_OPTS
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dnl CARES_SET_COMPILER_BASIC_OPTS
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dnl -------------------------------------------------
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dnl Sets compiler options/flags which are independant
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dnl of configure's debug or warnings options.
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dnl Sets compiler specific options/flags which do not
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dnl depend on configure's debug, optimize or warnings
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dnl options.
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AC_DEFUN([CARES_PROCESS_CC_BASIC_OPTS], [
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AC_DEFUN([CARES_SET_COMPILER_BASIC_OPTS], [
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AC_REQUIRE([CARES_CHECK_COMPILER])dnl
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#
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if test "$compiler_id" = "DECC"; then
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@@ -174,44 +248,134 @@ AC_DEFUN([CARES_PROCESS_CC_BASIC_OPTS], [
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])
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dnl CARES_PROCESS_CC_DEBUG_OPTS
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dnl CARES_SET_COMPILER_DEBUG_OPTS
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dnl -------------------------------------------------
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dnl Sets compiler options/flags which depend on
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dnl configure's debug given option.
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dnl Sets compiler specific options/flags which depend
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dnl on configure's debug option.
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AC_DEFUN([CARES_PROCESS_CC_DEBUG_OPTS], [
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AC_DEFUN([CARES_SET_COMPILER_DEBUG_OPTS], [
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AC_REQUIRE([CARES_CHECK_OPTION_DEBUG])dnl
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AC_REQUIRE([CARES_CHECK_COMPILER])dnl
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#
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if test "$want_debug" = "yes"; then
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CFLAGS="$CFLAGS -g"
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if test "$compiler_id" != "unknown"; then
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#
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ac_save_CFLAGS="$CFLAGS"
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ac_save_CPPFLAGS="$CPPFLAGS"
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#
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honor_debug_option="yes"
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CARES_VAR_STRIP([CFLAGS],[${flags_dbg_all}])
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CARES_VAR_STRIP([CPPFLAGS],[${flags_dbg_all}])
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if test "$want_debug" = "yes"; then
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CFLAGS="$CFLAGS $flags_dbg_yes"
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AC_MSG_CHECKING([if compiler accepts debug enabling flags $flags_dbg_yes])
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fi
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if test "$want_debug" = "no"; then
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CFLAGS="$CFLAGS $flags_dbg_off"
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AC_MSG_CHECKING([if compiler accepts debug disabling flags $flags_dbg_off])
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fi
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AC_COMPILE_IFELSE([
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AC_LANG_PROGRAM([[
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]],[[
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int i = 1;
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return i;
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]])
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],[
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AC_MSG_RESULT([yes])
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],[
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AC_MSG_RESULT([no])
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honor_debug_option="no"
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])
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#
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if test "$honor_debug_option" = "no"; then
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CFLAGS="$ac_save_CFLAGS"
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CPPFLAGS="$ac_save_CPPFLAGS"
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fi
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#
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fi
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#
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if test "$want_debug" = "no"; then
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dnl strip off optimizer flags
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NEWFLAGS=""
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for flag in $CFLAGS; do
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case "$flag" in
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-O*)
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dnl echo "cut off $flag"
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;;
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*)
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NEWFLAGS="$NEWFLAGS $flag"
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;;
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esac
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done
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CFLAGS=$NEWFLAGS
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fi
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#
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])
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dnl CARES_PROCESS_CC_WARNING_OPTS
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dnl CARES_SET_COMPILER_OPTIMIZE_OPTS
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dnl -------------------------------------------------
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dnl Sets compiler specific options/flags which depend
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dnl on configure's optimize option.
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AC_DEFUN([CARES_SET_COMPILER_OPTIMIZE_OPTS], [
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AC_REQUIRE([CARES_CHECK_OPTION_OPTIMIZE])dnl
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AC_REQUIRE([CARES_CHECK_COMPILER])dnl
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#
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if test "$compiler_id" != "unknown"; then
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#
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ac_save_CFLAGS="$CFLAGS"
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ac_save_CPPFLAGS="$CPPFLAGS"
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#
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dnl If optimization request setting has not been explicitly specified,
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dnl it has been derived from the debug setting and initially assumed.
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dnl This initially assumed optimizer setting will finally be ignored
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dnl if CFLAGS or CPPFLAGS already hold optimizer flags. This implies
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dnl that an initially assumed optimizer setting might not be honored.
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#
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honor_optimize_option="yes"
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if test "$want_optimize" = "assume_no" ||
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test "$want_optimize" = "assume_yes"; then
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AC_MSG_CHECKING([if compiler optimizer assumed setting might be used])
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CARES_VAR_MATCH_IFELSE([CFLAGS],[${flags_opt_all}],[
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honor_optimize_option="no"
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])
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CARES_VAR_MATCH_IFELSE([CPPFLAGS],[${flags_opt_all}],[
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honor_optimize_option="no"
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])
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AC_MSG_RESULT([$honor_optimize_option])
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if test "$honor_optimize_option" = "yes"; then
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if test "$want_optimize" = "assume_yes"; then
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want_optimize="yes"
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fi
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if test "$want_optimize" = "assume_no"; then
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want_optimize="no"
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fi
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fi
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fi
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#
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if test "$honor_optimize_option" = "yes"; then
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CARES_VAR_STRIP([CFLAGS],[${flags_opt_all}])
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CARES_VAR_STRIP([CPPFLAGS],[${flags_opt_all}])
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if test "$want_optimize" = "yes"; then
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CFLAGS="$CFLAGS $flags_opt_yes"
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AC_MSG_CHECKING([if compiler accepts optimizer enabling flags $flags_opt_yes])
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fi
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if test "$want_optimize" = "no"; then
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CFLAGS="$CFLAGS $flags_opt_off"
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AC_MSG_CHECKING([if compiler accepts optimizer disabling flags $flags_opt_off])
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fi
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AC_COMPILE_IFELSE([
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AC_LANG_PROGRAM([[
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]],[[
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int i = 1;
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return i;
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]])
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],[
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AC_MSG_RESULT([yes])
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],[
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AC_MSG_RESULT([no])
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honor_optimize_option="no"
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])
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fi
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#
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if test "$honor_optimize_option" = "no"; then
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CFLAGS="$ac_save_CFLAGS"
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CPPFLAGS="$ac_save_CPPFLAGS"
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fi
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#
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fi
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])
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dnl CARES_SET_COMPILER_WARNING_OPTS
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dnl -------------------------------------------------
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dnl Sets compiler options/flags which depend on
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dnl configure's warnings given option.
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AC_DEFUN([CARES_PROCESS_CC_WARNING_OPTS], [
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AC_DEFUN([CARES_SET_COMPILER_WARNING_OPTS], [
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AC_REQUIRE([CARES_CHECK_OPTION_WARNINGS])dnl
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AC_REQUIRE([CARES_CHECK_COMPILER])dnl
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#
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@@ -236,7 +400,7 @@ AC_DEFUN([CARES_PROCESS_CC_WARNING_OPTS], [
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if test "$compiler_id" = "GNUC"; then
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#
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# FIXME: Some of these warnings should be changed into errors
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# and moved to CARES-PROCESS-CC-BASIC-OPTS
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# and moved to CARES-SET-COMPILER-BASIC-OPTS
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#
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if test "$want_warnings" = "yes"; then
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dnl this is a set of options we believe *ALL* gcc versions support:
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@@ -295,6 +459,7 @@ dnl CARES_PROCESS_DEBUG_BUILD_OPTS
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dnl -------------------------------------------------
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dnl Settings which depend on configure's debug given
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dnl option, and further configure the build process.
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dnl Don't use this macro for compiler dependant stuff.
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AC_DEFUN([CARES_PROCESS_DEBUG_BUILD_OPTS], [
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AC_REQUIRE([CARES_CHECK_OPTION_DEBUG])dnl
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@@ -311,9 +476,86 @@ AC_DEFUN([CARES_PROCESS_DEBUG_BUILD_OPTS], [
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dnl libcurl stuff so this BUILDING_LIBCURL is not THAT much uglier
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AC_DEFINE(BUILDING_LIBCURL, 1, [when building as static part of libcurl])
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CPPFLAGS="$CPPFLAGS -DCURLDEBUG -I$srcdir/../include"
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CPPFLAGS="$CPPFLAGS -DCURLDEBUG"
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dnl CHECKME: Do we still need so specify this include path here?
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CPPFLAGS="$CPPFLAGS -I$srcdir/../include"
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fi
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#
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])
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dnl CARES_CHECK_PROG_CC
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dnl -------------------------------------------------
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dnl Check for compiler program, preventing CFLAGS and
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dnl CPPFLAGS from being unexpectedly changed.
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AC_DEFUN([CARES_CHECK_PROG_CC], [
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ac_save_CFLAGS="$CFLAGS"
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ac_save_CPPFLAGS="$CPPFLAGS"
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AC_PROG_CC
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CFLAGS="$ac_save_CFLAGS"
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CPPFLAGS="$ac_save_CPPFLAGS"
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])
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dnl CARES_VAR_MATCH (VARNAME, VALUE)
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dnl -------------------------------------------------
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dnl Verifies if shell variable VARNAME contains VALUE.
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dnl Contents of variable VARNAME and VALUE are handled
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dnl as whitespace separated lists of words. If at least
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dnl one word of VALUE is present in VARNAME the match
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dnl is considered positive, otherwise false.
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AC_DEFUN([CARES_VAR_MATCH], [
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ac_var_match_word="no"
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for word1 in "${[$1]}"; do
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for word2 in "[$2]"; do
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if test "$word1" = "$word2"; then
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ac_var_match_word="yes"
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fi
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done
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done
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])
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dnl CARES_VAR_MATCH_IFELSE (VARNAME, VALUE,
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dnl [ACTION-IF-MATCH], [ACTION-IF-NOT-MATCH])
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dnl -------------------------------------------------
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dnl This performs a CURL_VAR_MATCH check and executes
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dnl first branch if the match is positive, otherwise
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dnl the second branch is executed.
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AC_DEFUN([CARES_VAR_MATCH_IFELSE], [
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CARES_VAR_MATCH([$1],[$2])
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if test "$ac_var_match_word" = "yes"; then
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ifelse($3,,:,[$3])
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ifelse($4,,,[else
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[$4]])
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fi
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])
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dnl CARES_VAR_STRIP (VARNAME, VALUE)
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dnl -------------------------------------------------
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dnl Contents of variable VARNAME and VALUE are handled
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dnl as whitespace separated lists of words. Each word
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dnl from VALUE is removed from VARNAME when present.
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AC_DEFUN([CARES_VAR_STRIP], [
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ac_var_stripped=""
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for word1 in "${[$1]}"; do
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ac_var_strip_word="no"
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for word2 in "[$2]"; do
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if test "$word1" = "$word2"; then
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ac_var_strip_word="yes"
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fi
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done
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if test "$ac_var_strip_word" = "no"; then
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ac_var_stripped="$ac_var_stripped $word1"
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fi
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done
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dnl squeeze whitespace out of result
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[$1]=`eval echo $[$1]`
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])
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Block a user