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authorJim Meyering <jim@meyering.net>1996-12-21 01:50:50 +0000
committerJim Meyering <jim@meyering.net>1996-12-21 01:50:50 +0000
commit5fc47138b1f01f5ec8d449585bd19abea4da7960 (patch)
tree9c61a5687ee886cac714ed21614b3aa44fcb656a /m4/getline.m4
parent4a2b289e7c27da90ba0ae5300d13eb72a048c51f (diff)
downloadcoreutils-5fc47138b1f01f5ec8d449585bd19abea4da7960.tar.xz
broken out of ../acinclude.m4
Diffstat (limited to 'm4/getline.m4')
-rw-r--r--m4/getline.m445
1 files changed, 45 insertions, 0 deletions
diff --git a/m4/getline.m4 b/m4/getline.m4
new file mode 100644
index 000000000..356447260
--- /dev/null
+++ b/m4/getline.m4
@@ -0,0 +1,45 @@
+#serial 1
+
+dnl See if there's a working, system-supplied version of the getline function.
+dnl We can't just to AC_REPLACE_FUNCS(getline) because some systems
+dnl have a function by that name in -linet that doesn't have anything
+dnl to do with the function we need.
+AC_DEFUN(AM_FUNC_GETLINE,
+[dnl
+ am_getline_needs_run_time_check=no
+ am_cv_func_working_getline=yes
+ AC_CHECK_FUNC(getline,
+ dnl Found it in some library. Verify that it works.
+ am_getline_needs_run_time_check=yes,
+ am_cv_func_working_getline=no)
+ if test $am_getline_needs_run_time_check = yes; then
+ AC_CACHE_CHECK([for working getline function], am_cv_func_working_getline,
+ [echo fooN |tr -d '\012'|tr N '\012' > conftestdata
+ AC_TRY_RUN([
+# include <stdio.h>
+# include <sys/types.h>
+# if HAVE_STRING_H
+# include <string.h>
+# endif
+ int main ()
+ { /* Based on a test program from Karl Heuer. */
+ char *line = NULL;
+ size_t siz = 0;
+ int len;
+ FILE *in = fopen ("./conftestdata", "r");
+ if (!in)
+ return 1;
+ len = getline (&line, &siz, in);
+ exit ((len == 4 && line && strcmp (line, "foo\n") == 0) ? 0 : 1);
+ }
+ ], am_cv_func_working_getline=yes dnl The library version works.
+ , am_cv_func_working_getline=no dnl The library version does NOT work.
+ , am_cv_func_working_getline=no dnl We're cross compiling.
+ )])
+ fi
+
+ if test $am_cv_func_working_getline = no; then
+ LIBOBJS="$LIBOBJS getline.o"
+ AC_SUBST(LIBOBJS)dnl
+ fi
+])