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| author | Garrett Cooper <yanegomi@gmail.com> | 2012-12-03 01:57:28 (GMT) |
|---|---|---|
| committer | Jason Evans <jasone@canonware.com> | 2012-12-24 18:32:14 (GMT) |
| commit | 72c1e59fd249f99dcf5d3992cbdd570a381a67ce (patch) | |
| tree | f9e0580ca16b7a399bdf36698b23748237de2c54 /configure.ac | |
| parent | 6e6164ae159d9c3bd4f44bd2cba6fc3237687c80 (diff) | |
| download | jemalloc-72c1e59fd249f99dcf5d3992cbdd570a381a67ce.zip jemalloc-72c1e59fd249f99dcf5d3992cbdd570a381a67ce.tar.gz jemalloc-72c1e59fd249f99dcf5d3992cbdd570a381a67ce.tar.bz2 | |
Improve configure tests for ffsl
In particular:
- ffsl always returns int, not long, on FreeBSD, Linux, and OSX.
- Mute compiler warnings about rv being unused (and the potential for
compilers optimizing out the call completely) by dumping the value
with printf(3).
Signed-off-by: Garrett Cooper <yanegomi@gmail.com>
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/configure.ac b/configure.ac index 9d062a9..88297c5 100644 --- a/configure.ac +++ b/configure.ac @@ -928,7 +928,7 @@ AC_CACHE_CHECK([STATIC_PAGE_SHIFT], #include <stdio.h> ]], [[ - long result; + int result; FILE *f; #ifdef _WIN32 @@ -947,7 +947,7 @@ AC_CACHE_CHECK([STATIC_PAGE_SHIFT], if (f == NULL) { return 1; } - fprintf(f, "%u\n", result); + fprintf(f, "%d\n", result); fclose(f); return 0; @@ -1092,11 +1092,13 @@ dnl Check for ffsl(3), and fail if not found. This function exists on all dnl platforms that jemalloc currently has a chance of functioning on without dnl modification. JE_COMPILABLE([a program using ffsl], [ +#include <stdio.h> #include <strings.h> #include <string.h> ], [ { int rv = ffsl(0x08); + printf("%d\n", rv); } ], [je_cv_function_ffsl]) if test "x${je_cv_function_ffsl}" != "xyes" ; then |