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| author | Carlos Santos | 2017-02-08 16:27:36 +0100 |
|---|---|---|
| committer | Karel Zak | 2017-02-09 11:31:49 +0100 |
| commit | 4953018e23ba125272d9bcfd61a1a3040d211bf0 (patch) | |
| tree | e072fca0b5b12554a1c415d26d8087200cc62157 /configure.ac | |
| parent | umount: exclude selinuxfs from --all (diff) | |
| download | kernel-qcow2-util-linux-4953018e23ba125272d9bcfd61a1a3040d211bf0.tar.gz kernel-qcow2-util-linux-4953018e23ba125272d9bcfd61a1a3040d211bf0.tar.xz kernel-qcow2-util-linux-4953018e23ba125272d9bcfd61a1a3040d211bf0.zip | |
build-sys: improve detection of the "isnan" function in uClibc
Since commit beceb14b450ded6560ed743634a5e80604a8edf3, MATH_LIBS is set
to "-lm" when the isnan function is detected. In uClibc, however, isnan
is a macro that calls __isnan, __isnanf, or __isnanl, depending on the
size of the argument (double, float or long double).
Fixes:
http://autobuild.buildroot.net/results/2c2/2c29a78ed81ca844a87dcd076ab3e14ea080296d/
http://autobuild.buildroot.net/results/404/404b10f359b2ae8a7216729fa1bab37fed2d3d4c/
Signed-off-by: Carlos Santos <casantos@datacom.ind.br>
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 37599212c..3bb3ba810 100644 --- a/configure.ac +++ b/configure.ac @@ -435,6 +435,7 @@ AM_CONDITIONAL([HAVE_OPENAT], [test "x$have_openat" = xyes]) AC_CHECK_FUNCS([isnan], [], [AC_CHECK_LIB([m], [isnan], [MATH_LIBS="-lm"])] + [AC_CHECK_LIB([m], [__isnan], [MATH_LIBS="-lm"])] ) AC_SUBST([MATH_LIBS]) |