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author | Jim Meyering <jim@meyering.net> | 1999-03-07 16:59:21 +0000 |
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committer | Jim Meyering <jim@meyering.net> | 1999-03-07 16:59:21 +0000 |
commit | 9bf8b6b4c76c689ad27bd70eadab8b19567f2bed (patch) | |
tree | 791d6870d24a8fc460e94c0b96249ecab41f35f0 /m4/jm-glibc-io.m4 | |
parent | 4677710c39c44a8e4a2c7686ce31f0543cc2ea05 (diff) | |
download | coreutils-9bf8b6b4c76c689ad27bd70eadab8b19567f2bed.tar.xz |
Use only those *_unlocked macros that are declared.
Diffstat (limited to 'm4/jm-glibc-io.m4')
-rw-r--r-- | m4/jm-glibc-io.m4 | 33 |
1 files changed, 19 insertions, 14 deletions
diff --git a/m4/jm-glibc-io.m4 b/m4/jm-glibc-io.m4 index 115601f32..868fa4392 100644 --- a/m4/jm-glibc-io.m4 +++ b/m4/jm-glibc-io.m4 @@ -1,23 +1,28 @@ -#serial 1 +#serial 2 dnl From Jim Meyering. dnl dnl See if the glibc *_unlocked I/O macros are available. +dnl Use only those *_unlocked macros that are declared. dnl AC_DEFUN(jm_FUNC_GLIBC_UNLOCKED_IO, - [AC_CHECK_FUNCS( \ - clearerr_unlocked \ - feof_unlocked \ - ferror_unlocked \ - fflush_unlocked \ - fputc_unlocked \ - fread_unlocked \ - fwrite_unlocked \ - getc_unlocked \ - getchar_unlocked \ - putc_unlocked \ - putchar_unlocked \ - ) + [ + io_functions='clearerr_unlocked feof_unlocked ferror_unlocked + fflush_unlocked fputc_unlocked fread_unlocked fwrite_unlocked + getc_unlocked getchar_unlocked putc_unlocked putchar_unlocked' + for jm_io_func in $io_functions; do + # Check for the existence of each function only if its declared. + # Otherwise, we'd get the Solaris5.5.1 functions that are not + # declared, and that have been removed from Solaris5.6. The resulting + # 5.5.1 binaries would not run on 5.6 due to shared library differences. + jm_CHECK_DECLARATIONS([#include <stdio.h> + ], $jm_io_func, + jm_declared=yes, + jm_declared=no) + if test $jm_declared = yes; then + AC_CHECK_FUNCS($jm_io_func) + fi + done ] ) |