diff options
| 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 | 0284717b49cbd9a58cf3237f6f4855f2d7b086e6 (patch) | |
| tree | d9c015cd30d9deed81e10d06de9a14d1e4429303 /configure.ac | |
| parent | 41006c069b65a01b92eb2f9a099ddd356047c5ac (diff) | |
| download | dropbear-0284717b49cbd9a58cf3237f6f4855f2d7b086e6.tar.gz | |
Compile with -fno-strict-overflow if possible.
Needed for curve25519-donna https://github.com/agl/curve25519-donna/issues/31
Diffstat (limited to 'configure.ac')
| -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 |