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authorJim Meyering <jim@meyering.net>2001-07-05 10:39:08 +0000
committerJim Meyering <jim@meyering.net>2001-07-05 10:39:08 +0000
commit6bcf3fe4e4f5da02d7baf3074bc5e280b4af80ba (patch)
treef8ff50389e1bc080478fc5ae3eaf4268d0588c09 /m4
parent1226c8ad6fe79147553a421bbc507399c0aeb45d (diff)
downloadcoreutils-6bcf3fe4e4f5da02d7baf3074bc5e280b4af80ba.tar.xz
.
Diffstat (limited to 'm4')
-rw-r--r--m4/jm-glibc-io.m435
1 files changed, 35 insertions, 0 deletions
diff --git a/m4/jm-glibc-io.m4 b/m4/jm-glibc-io.m4
new file mode 100644
index 000000000..e88f24caf
--- /dev/null
+++ b/m4/jm-glibc-io.m4
@@ -0,0 +1,35 @@
+dnl This file is automatically generated from m4/jm-glibc-io.m4n.
+
+#serial 5 -*- autoconf -*-
+
+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,
+ [
+ # Kludge (not executed) to make autoheader do the right thing.
+ if test a = b; then
+ AC_CHECK_DECLS([clearerr_unlocked,feof_unlocked,ferror_unlocked,fflush_unlocked,fgets_unlocked,fputc_unlocked,fputs_unlocked,fread_unlocked,fwrite_unlocked,getc_unlocked,getchar_unlocked,putc_unlocked,putchar_unlocked])
+ AC_CHECK_FUNCS(clearerr_unlocked feof_unlocked ferror_unlocked fflush_unlocked fgets_unlocked fputc_unlocked fputs_unlocked fread_unlocked fwrite_unlocked getc_unlocked getchar_unlocked putc_unlocked putchar_unlocked)
+ fi
+
+ io_functions='clearerr_unlocked feof_unlocked ferror_unlocked fflush_unlocked fgets_unlocked fputc_unlocked fputs_unlocked fread_unlocked fwrite_unlocked getc_unlocked getchar_unlocked putc_unlocked putchar_unlocked'
+
+ for jm_io_func in $io_functions; do
+ # Check for the existence of each function only if it is declared.
+ # Otherwise, we'd get the Solaris5.5.1 functions that are not
+ # declared, and that have been removed from Solaris5.6. The resulting
+ # 5.5.1 binaries would not run on 5.6 due to shared library differences.
+ AC_CHECK_DECLS([$jm_io_func],
+ jm_declared=yes,
+ jm_declared=no,
+ [#include <stdio.h>])
+ if test $jm_declared = yes; then
+ AC_CHECK_FUNCS($jm_io_func)
+ fi
+ done
+ ]
+)