From f3b8b6ad4d4ba13d1c6a5eba826625d2819d781a Mon Sep 17 00:00:00 2001 From: barracuda156 Date: Sat, 20 Jan 2024 16:08:52 +0800 Subject: [PATCH 3/6] configure.ac: support -mtune --- configure.ac | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git configure.ac configure.ac index 66efc3c..d7fd391 100644 --- configure.ac +++ configure.ac @@ -135,7 +135,8 @@ esac # Extra options. # -AC_ARG_ENABLE(arch, [AS_HELP_STRING([--enable-arch=cpu], [if using gcc, enable emitting architecture-tuned assembly code (default is "no")])], , enable_arch=no) +AC_ARG_ENABLE(arch, [AS_HELP_STRING([--enable-arch=cpu], [if using gcc, enable emitting architecture-tuned assembly code (default is "no")])], , enable_arch=no) +AC_ARG_ENABLE(tune, [AS_HELP_STRING([--enable-tune=cpu], [if using gcc, enable emitting architecture-tuned assembly code (default is "no")])], , enable_tune=no) AC_ARG_ENABLE(clang, [AS_HELP_STRING([--enable-clang], [prefer clang over gcc if both are installed (default is "no")])], , enable_clang=no) AC_ARG_ENABLE(compiler, [AS_HELP_STRING([--enable-compiler], [enable plugin compiler (default is "yes")])], , enable_compiler=yes) AC_ARG_ENABLE(core, [AS_HELP_STRING([--enable-core], [build without optional libraries or plugin compiler (default is "no")])], , enable_core=no) @@ -334,6 +335,22 @@ if test "x$enable_arch" != "xno"; then ) fi +if test "x$enable_tune" != "xno"; then + AC_MSG_CHECKING([whether $CC accepts -mtune=$enable_tune]) + a68g_ac_save_CFLAGS=$CFLAGS + a68g_ac_mtune="-mtune=$enable_tune" + CFLAGS="$a68g_ac_save_CFLAGS $a68g_ac_mtune" + _AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], + [AC_MSG_RESULT(yes) + AC_DEFINE_UNQUOTED(HAVE_TUNING, "$a68g_ac_mtune", [Define this if user wants to tune for a specific CPU]) + ], + [AC_MSG_RESULT(no) + AC_MSG_WARN([your CPU name is not accepted; resetting to default]) + CFLAGS="$a68g_ac_save_CFLAGS" + ] + ) +fi + # # Some platforms want another or no PIC option. #