libxl: kill the need for checking and linking to libm

Which was introduced in 7b0dc7f3ddfe. This is because the NUMA
placement heuristic does not need FP arith anymore.

As usual when changing configure.ac, remember to rerun autoconf
after applying this change.

Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>

diff --git a/tools/config.h.in b/tools/config.h.in
index 87d744b1b582a0df31ed00e559c98bb860bc8fff..bc1ed1057b12db97f830ed48b77bbc8c78878a32 100644 (file)
--- a/tools/config.h.in
+++ b/tools/config.h.in
@@ -6,9 +6,6 @@
 /* Define to 1 if you have the `crypto' library (-lcrypto). */
 #undef HAVE_LIBCRYPTO
 
-/* Define to 1 if you have the `m' library (-lm). */
-#undef HAVE_LIBM
-
 /* Define to 1 if you have the `yajl' library (-lyajl). */
 #undef HAVE_LIBYAJL
 

diff --git a/tools/configure b/tools/configure
index 0da1a1b18c754aa1119ad9fe6ef0293c933f397b..216faacba2bfca9a353968bde4eca52671138097 100755 (executable)
--- a/tools/configure
+++ b/tools/configure
@@ -6336,53 +6336,6 @@ else
 fi
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for isnan in -lm" >&5
-$as_echo_n "checking for isnan in -lm... " >&6; }
-if test "${ac_cv_lib_m_isnan+set}" = set; then :
-  $as_echo_n "(cached) " >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char isnan ();
-int
-main ()
-{
-return isnan ();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_lib_m_isnan=yes
-else
-  ac_cv_lib_m_isnan=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_m_isnan" >&5
-$as_echo "$ac_cv_lib_m_isnan" >&6; }
-if test "x$ac_cv_lib_m_isnan" = x""yes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBM 1
-_ACEOF
-
-  LIBS="-lm $LIBS"
-
-else
-  as_fn_error $? "Could not find libm" "$LINENO" 5
-fi
-
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for MD5 in -lcrypto" >&5
 $as_echo_n "checking for MD5 in -lcrypto... " >&6; }
 if test "${ac_cv_lib_crypto_MD5+set}" = set; then :

diff --git a/tools/configure.ac b/tools/configure.ac
index 59b9aaffb943f83d41d9bd49322d74f30d5ff5d6..2ee825267bdd5135187e8b9aec5930dbb0079f53 100644 (file)
--- a/tools/configure.ac
+++ b/tools/configure.ac
@@ -137,7 +137,6 @@ AC_CHECK_LIB([lzo2], [lzo1x_decompress], [zlib="$zlib -DHAVE_LZO1X -llzo2"])
 AC_SUBST(zlib)
 AC_CHECK_LIB([aio], [io_setup], [system_aio="y"], [system_aio="n"])
 AC_SUBST(system_aio)
-AC_CHECK_LIB([m], [isnan], [], [AC_MSG_ERROR([Could not find libm])])
 AC_CHECK_LIB([crypto], [MD5], [], [AC_MSG_ERROR([Could not find libcrypto])])
 AC_CHECK_LIB([ext2fs], [ext2fs_open2], [libext2fs="y"], [libext2fs="n"])
 AC_SUBST(libext2fs)

diff --git a/tools/libxl/Makefile b/tools/libxl/Makefile
index 313f05c2921ff1c8cb9f57df633918f07265bf23..48f352eb4ede2accdf7de32de06ca0eeb7cf658e 100644 (file)
--- a/tools/libxl/Makefile
+++ b/tools/libxl/Makefile
@@ -61,7 +61,7 @@ ifeq ($(BISON),)
                  scanners, please install it an rerun configure)
 endif
 
-LIBXL_LIBS += -lyajl -lm
+LIBXL_LIBS += -lyajl
 
 LIBXL_OBJS = flexarray.o libxl.o libxl_create.o libxl_dm.o libxl_pci.o \
                        libxl_dom.o libxl_exec.o libxl_xshelp.o libxl_device.o \