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moar portability

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cathugger
2017-10-06 00:59:19 +00:00
parent 3bf616bee0
commit 0428ae301f
2 changed files with 47 additions and 3 deletions
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46
configure.ac
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@@ -2,9 +2,51 @@ AC_INIT(mkp224o)
# sanity check
AC_CONFIG_SRCDIR([main.c])
# C compiler
: ${CFLAGS="-O3 -march=native -fomit-frame-pointer"}
oldcflags="$CFLAGS"
AC_PROG_CC
if test "x$oldcflags" != "x$CFLAGS"
then
oldcflags="-O3"
CFLAGS="-march=native"
AC_MSG_CHECKING([whether CC supports -march=native])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
[AC_MSG_RESULT([yes])]
[oldcflags="$oldcflags -march=native"],
[AC_MSG_RESULT([no])]
)
CFLAGS="-fomit-frame-pointer"
AC_MSG_CHECKING([whether CC supports -fomit-frame-pointer])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
[AC_MSG_RESULT([yes])]
[oldcflags="$oldcflags -fomit-frame-pointer"],
[AC_MSG_RESULT([no])]
)
CFLAGS="$oldcflags"
fi
cstd=""
oldcflags="$CFLAGS"
CFLAGS="-std=c99"
AC_MSG_CHECKING([whether CC supports -std=c99])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
[AC_MSG_RESULT([yes])]
[cstd="-std=c99"],
[AC_MSG_RESULT([no])]
)
CFLAGS="$oldcflags"
nopie=""
oldcflags="$CFLAGS"
CFLAGS="-no-pie"
AC_MSG_CHECKING([whether CC supports -no-pie])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
[AC_MSG_RESULT([yes])]
[nopie="-no-pie"],
[AC_MSG_RESULT([no])]
)
CFLAGS="$oldcflags"
MYDEFS=""
ed25519impl=""
@@ -92,6 +134,8 @@ then
MYDEFS="$MYDEFS -DSTATISTICS"
fi
AC_SUBST(CSTD,["$cstd"])
AC_SUBST(ED25519IMPL,["$ed25519impl"])
AC_SUBST(MYDEFS,["$MYDEFS"])
AC_SUBST(NOPIE,["$nopie"])
AC_OUTPUT(Makefile)