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make configure less smart

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This commit is contained in:
Martin Reinecke 2019-01-11 09:38:10 +01:00
parent 253b253467
commit 5c25c300d9
1 changed files with 0 additions and 44 deletions
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44
configure.ac
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@ -2,7 +2,6 @@ AC_INIT([libsharp], [1.0.0])
AM_INIT_AUTOMAKE([foreign subdir-objects -Wall -Werror])
AM_MAINTAINER_MODE([enable])
AC_OPENMP
dnl
dnl Needed for linking on Windows.
@ -26,51 +25,8 @@ dnl Enable silent build rules if this version of Automake supports them
dnl
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
AC_DEFUN([AX_CHECK_COMPILE_FLAG],
[AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
_AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
[AS_VAR_SET(CACHEVAR,[yes])],
[AS_VAR_SET(CACHEVAR,[no])])
_AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
AS_IF([test x"AS_VAR_GET(CACHEVAR)" = xyes],
[m4_default([$2], :)],
[m4_default([$3], :)])
AS_VAR_POPDEF([CACHEVAR])dnl
])dnl AX_CHECK_COMPILE_FLAGS
dnl
dnl Introduce --enable-native-optimizations command line argument to turn on
dnl -march=native compiler flag, disabled by default.
dnl
AC_ARG_ENABLE(
[native-optimizations],
[AS_HELP_STRING([--enable-native-optimizations], [Enable non-portable optimizations for your own CPU by compiling with -march=native @<:@default=no@:>@])]
)
AC_PROG_CC_C99
AS_IF(
[test "x$enable_native_optimizations" = "xyes"],
[AX_CHECK_COMPILE_FLAG([-march=native],[CC="$CC -march=native"])],
dnl
dnl FIXME: On GCC 4.4, we hit an internal compiler error unless either
dnl -march=native or -fno-tree-fre is specified.
dnl
[
AS_IF(
[test "x$GCC" = "xyes" -a "x`$CC -dumpversion | cut -d. -f1,2`" = "x4.4"],
[AX_CHECK_COMPILE_FLAG([-fno-tree-fre], [CFLAGS="$CFLAGS -fno-tree-fre"])]
)
]
)
AX_CHECK_COMPILE_FLAG([-fno-math-errno],[CFLAGS="$CFLAGS -fno-math-errno"])
AX_CHECK_COMPILE_FLAG([-fno-trapping-math],[CFLAGS="$CFLAGS -fno-trapping-math"])
AX_CHECK_COMPILE_FLAG([-fno-rounding-math],[CFLAGS="$CFLAGS -fno-rounding-math"])
AX_CHECK_COMPILE_FLAG([-fno-signaling-nans],[CFLAGS="$CFLAGS -fno-signaling-nans"])
AX_CHECK_COMPILE_FLAG([-fcx-limited-range],[CFLAGS="$CFLAGS -fcx-limited-range"])
CFLAGS="$CFLAGS $OPENMP_CFLAGS"
# adding the lib to the files to link
LIBS="-lm"