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build: Use 'LT_LIB_M' to determine whether -lm is needed.

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* configure.ac: Use 'LT_LIB_M' instead of 'AC_CHECK_LIB(m, cos)'.
  Suggested by Sylvain Beucler <beuc@beuc.net>.
This commit is contained in:
Ludovic Courtès 2014-07-04 15:37:38 +02:00
parent df8c52e93d
commit 8c75d3ae01
1 changed files with 3 additions and 4 deletions
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7
configure.ac
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@ -692,10 +692,9 @@ AC_TYPE_GETGROUPS
AC_TYPE_SIGNAL
AC_TYPE_MODE_T
# On mingw -lm is empty, so this test is unnecessary, but it's
# harmless so we don't hard-code to suppress it.
#
AC_CHECK_LIB(m, cos)
dnl Check whether we need -lm.
LT_LIB_M
LIBS="$LIBS $LIBM"
AC_CHECK_FUNCS(gethostbyname)
if test $ac_cv_func_gethostbyname = no; then