Mercurial > hg > octave-lojdl > gnulib-hg
changeset 2728:75019f2bb32f
(jm_MACROS): Add a test to see if -lm is required
to link seq. If so, set SEQ_LIBM to -lm. From Bruno Haible.
| author | Jim Meyering <jim@meyering.net> |
|---|---|
| date | Sun, 09 Jul 2000 17:46:11 +0000 |
| parents | 23b74176b0a0 |
| children | fe0bc5252f84 |
| files | m4/jm-macros.m4 |
| diffstat | 1 files changed, 16 insertions(+), 0 deletions(-) [+] |
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--- a/m4/jm-macros.m4 +++ b/m4/jm-macros.m4 @@ -188,6 +188,22 @@ AC_SUBST(POW_LIBM) test $am_cv_func_strtod_needs_libm = yes && POW_LIBM=-lm + # See if linking `seq' requires -lm. + # It does on nearly every system. The single exception (so far) is + # BeOS which doesn't even have a separate math library. + AC_SUBST(SEQ_LIBM) + ac_seq_body=' + static double x, y; + x = floor (x); + x = rint (x); + x = modf (x, &y);' + AC_TRY_LINK([#include <math.h>], $ac_seq_body, , + [ac_seq_save_LIBS="$LIBS" + LIBS="$LIBS -lm" + AC_TRY_LINK([#include <math.h>], $ac_seq_body, SEQ_LIBM=-lm) + LIBS="$ac_seq_save_LIBS" + ]) + jm_LANGINFO_CODESET jm_GLIBC21 jm_ICONV