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[build] Test for gcc optimization options

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While clang accepts gcc's optimization options, it produces a warning
when it ignores them, so need to set -Werror before checking for those
options when building with -Werror otherwise the build will fail.
This commit is contained in:
Bill Currie 2022-03-30 23:23:34 +09:00
parent d35154ecf1
commit d8a7706e58
1 changed files with 19 additions and 18 deletions
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37
config.d/compiling.m4
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@ -76,6 +76,21 @@ else
AC_MSG_RESULT(no)
fi
AC_ARG_ENABLE(Werror,
AS_HELP_STRING([--disable-Werror], [do not treat warnings as errors]))
dnl We want warnings, lots of warnings...
dnl The help text should be INVERTED before release!
dnl when in git, this test defaults to ENABLED.
dnl In a release, this test defaults to DISABLED.
if test "x$GCC" = "xyes"; then
if test "x$enable_Werror" $cvs_def_enabled; then
CFLAGS="$CFLAGS -Wall -Werror -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations"
else
CFLAGS="$CFLAGS -Wall"
fi
CFLAGS="$CFLAGS -fno-common"
fi
AC_ARG_ENABLE(optimize,
AS_HELP_STRING([--disable-optimize],
[compile without optimizations (for development)]),
@ -121,13 +136,14 @@ if test "x$optimize" = xyes -a "x$leave_cflags_alone" != "xyes"; then
BUILD_TYPE="$BUILD_TYPE Optimize"
if test "x$GCC" = xyes; then
saved_cflags="$CFLAGS"
CFLAGS=""
dnl CFLAGS=""
QF_CC_OPTION(-frename-registers)
QF_CC_OPTION(-fexpensive-optimizations)
dnl if test "$CC_MAJ" -ge 4; then
dnl QF_CC_OPTION(-finline-limit=32000 -Winline)
dnl fi
dnl heavy="-O2 $CFLAGS -ffast-math -fno-unsafe-math-optimizations -funroll-loops -fomit-frame-pointer -fexpensive-optimizations"
heavy="-O2 $CFLAGS -fno-fast-math -funroll-loops -fomit-frame-pointer -fexpensive-optimizations"
dnl heavy="-O2 $CFLAGS -ffast-math -fno-unsafe-math-optimizations -funroll-loops -fomit-frame-pointer"
heavy="-O2 $CFLAGS -fno-fast-math -funroll-loops -fomit-frame-pointer "
CFLAGS="$saved_cflags"
light="-O2"
AC_ARG_ENABLE(strict-aliasing,
@ -280,21 +296,6 @@ if test "x$GCC" != xyes; then
esac
fi
AC_ARG_ENABLE(Werror,
AS_HELP_STRING([--disable-Werror], [do not treat warnings as errors]))
dnl We want warnings, lots of warnings...
dnl The help text should be INVERTED before release!
dnl when in git, this test defaults to ENABLED.
dnl In a release, this test defaults to DISABLED.
if test "x$GCC" = "xyes"; then
if test "x$enable_Werror" $cvs_def_enabled; then
CFLAGS="$CFLAGS -Wall -Werror -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations"
else
CFLAGS="$CFLAGS -Wall"
fi
CFLAGS="$CFLAGS -fno-common"
fi
AS="$CC"
if test "x$SYSTYPE" = "xWIN32"; then
ASFLAGS="\$(DEFS) \$(CFLAGS) \$(CPPFLAGS) \$(DEFAULT_INCLUDES) \$(INCLUDES) -D_WIN32"