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| author | Matt Johnston <matt@ucc.asn.au> | 2017-06-23 21:31:25 +0800 |
|---|---|---|
| committer | Matt Johnston <matt@ucc.asn.au> | 2017-06-23 21:31:25 +0800 |
| commit | af2caaab7279b14ea2ed92726086c9f8f2935e75 (patch) | |
| tree | e626705d2d6bb92f3f83df452df9e95dfa356052 | |
| parent | 169f41a43c6e7f98a1d0f3f62591a3cf527291fa (diff) | |
Compile with -fno-strict-overflow if possible.
Needed for curve25519-donna https://github.com/agl/curve25519-donna/issues/31
| -rw-r--r-- | configure.ac | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index 767bd05..1e4ea4a 100644 --- a/configure.ac +++ b/configure.ac @@ -9,7 +9,7 @@ AC_PREREQ(2.59) AC_INIT AC_CONFIG_SRCDIR(buffer.c) -OLDCFLAGS=$CFLAGS +OLDCFLAGS="$CFLAGS" # Checks for programs. AC_PROG_CC AC_PROG_MAKE_SET @@ -24,6 +24,17 @@ if test -z "$OLDCFLAGS" && test "$GCC" = "yes"; then CFLAGS="-Os -W -Wall -Wno-pointer-sign" fi +AC_MSG_CHECKING([if compiler '$CC' supports -fno-strict-overflow]) +OLDCFLAGS="$CFLAGS" +CFLAGS="$CFLAGS -fno-strict-overflow" +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])], + [AC_MSG_RESULT(yes)], + [ + AC_MSG_RESULT(no) + CFLAGS=$OLDCFLAGS + ] + ) + # large file support is useful for scp AC_SYS_LARGEFILE |