diff options
author | Pádraig Brady <P@draigBrady.com> | 2014-05-10 04:53:29 +0100 |
---|---|---|
committer | Pádraig Brady <P@draigBrady.com> | 2014-05-21 18:29:38 +0100 |
commit | 1ab31d1ec1635ae0764604a8bf61e11851a63a45 (patch) | |
tree | 54b5f8dccbde4e512a394ff8b42e6635209ea573 /src/libstdbuf.c | |
parent | 7a63d6395ac117b753a18468a9b3f5ed95d176d4 (diff) | |
download | coreutils-1ab31d1ec1635ae0764604a8bf61e11851a63a45.tar.xz |
stdbuf: support compilers other than __GNUC__
__SUNPRO_C >= 0x590 /*12.0*/ supports __attribute((constructor))
required by stdbuf, so use a more direct check for this.
Note ensure that --libexecdir is set to the appropriate
install location for libstdbuf.so so that stdbuf works
when installed on the system like it does when running
tests in the build directory.
* configure.ac (stdbuf_supported): Use a test prog to determine support.
* src/libstdbuf.c (stdbuf): Define appropriately for non GCC compilers,
and provide early feedback (compilation warning) if trying to compile
libstdbuf without the necessary support.
* src/stdbuf.c (set_LD_PRELOAD): Add a note on having stdbuf
look for libstdbuf.so in the default lib search path.
* cfg.mk (sc_prohibit-gl-attributes): Adjust so we can exclude
libstdbuf.so from prohibiting '__attribute', since we want
this form to avoid silently eliding this required attribute on non GCC.
Reported and tested by Rich Burridge.
Diffstat (limited to 'src/libstdbuf.c')
-rw-r--r-- | src/libstdbuf.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/libstdbuf.c b/src/libstdbuf.c index 88321e9e4..1281b9de7 100644 --- a/src/libstdbuf.c +++ b/src/libstdbuf.c @@ -127,7 +127,8 @@ apply_mode (FILE *stream, const char *mode) } } -__attribute__ ((constructor)) static void +/* Use __attribute to avoid elision of __attribute__ on SUNPRO_C etc. */ +static void __attribute ((constructor)) stdbuf (void) { char *e_mode = getenv ("_STDBUF_E"); |