diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index b5c880a..66a8fe3 100644 --- a/configure.ac +++ b/configure.ac @@ -55,7 +55,12 @@ AC_SEARCH_LIBS([iconv_open], [iconv], use_libiconv=true) AS_IF([test "x$use_libiconv" = xtrue], [ AC_DEFINE(CONFIG_ICONV, 1, [use iconv]) ]) -AC_CHECK_LIB([m], [fabs]) +# Locate math functions. Most systems have it either in libc or libm, but a few +# have some, eg C89, functions in libc and others in libm. Use C99 lrint to probe. +AC_SEARCH_LIBS([lrint], [m], + [], + [AC_MSG_ERROR([Unable to locate math functions!])] +) pkg_libs="$LIBS" LIBS="$OLDLIBS $LIBS" |