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| author | Jason Evans <jasone@canonware.com> | 2016-10-28 04:23:48 (GMT) |
|---|---|---|
| committer | Jason Evans <jasone@canonware.com> | 2016-10-28 04:23:48 (GMT) |
| commit | d76cfec319760c71bf3d30b9960c9e666785c461 (patch) | |
| tree | 579ae577d4b0344a8361ebaac3d658b4163c20f8 /configure.ac | |
| parent | c44fa92db5cccf557d1ced431da6aa5ded58ed16 (diff) | |
| download | jemalloc-d76cfec319760c71bf3d30b9960c9e666785c461.zip jemalloc-d76cfec319760c71bf3d30b9960c9e666785c461.tar.gz jemalloc-d76cfec319760c71bf3d30b9960c9e666785c461.tar.bz2 | |
Only link with libm (-lm) if necessary.
This fixes warnings when building with MSVC.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/configure.ac b/configure.ac index f27c61f..a9d7511 100644 --- a/configure.ac +++ b/configure.ac @@ -494,6 +494,15 @@ AC_SUBST([ARFLAGS]) AC_SUBST([AROUT]) AC_SUBST([CC_MM]) +dnl Determine whether libm must be linked to use e.g. log(3). +AC_SEARCH_LIBS([log], [m], , [AC_MSG_ERROR([Missing math functions])]) +if test "x$ac_cv_search_log" != "xnone required" ; then + LM="$ac_cv_search_log" +else + LM= +fi +AC_SUBST(LM) + JE_COMPILABLE([__attribute__ syntax], [static __attribute__((unused)) void foo(void){}], [], @@ -940,9 +949,9 @@ fi AC_MSG_CHECKING([configured backtracing method]) AC_MSG_RESULT([$backtrace_method]) if test "x$enable_prof" = "x1" ; then - if test "x$abi" != "xpecoff"; then - dnl Heap profiling uses the log(3) function. - LIBS="$LIBS -lm" + dnl Heap profiling uses the log(3) function. + if test "x$LM" != "x" ; then + LIBS="$LIBS $LM" fi AC_DEFINE([JEMALLOC_PROF], [ ]) |