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112 lines
2.4 KiB
Plaintext
112 lines
2.4 KiB
Plaintext
# _AC_LIBOBJ_STRTOD
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# -----------------
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m4_define([_AC_LIBOBJ_STRTOD],
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[AC_LIBOBJ(strtod)
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AC_CHECK_FUNC(pow)
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if test $ac_cv_func_pow = no; then
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AC_CHECK_LIB(m, pow,
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[POW_LIB=-lm],
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[AC_MSG_WARN([cannot find library containing definition of pow])])
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fi
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])# _AC_LIBOBJ_STRTOD
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# AC_FUNC_STRTOD
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# --------------
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AN_FUNCTION([strtod], [AC_FUNC_STRTOD])
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AC_DEFUN([AC_FUNC_STRTOD],
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[AC_SUBST(POW_LIB)dnl
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AC_CACHE_CHECK(for working strtod, ac_cv_func_strtod,
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[AC_RUN_IFELSE(
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[AC_LANG_SOURCE(
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[[
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#ifdef __cplusplus
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extern "C" {
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#endif
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double strtod(const char *nptr, char **endptr);
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void exit(int);
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#ifdef __cplusplus
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}
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#endif
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int
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main()
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{
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{
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/* Some versions of Linux strtod mis-parse strings with leading '+'. */
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const char *string = " +69";
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char *term;
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double value;
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value = strtod (string, &term);
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if (value != 69 || term != (string + 4))
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exit (1);
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}
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{
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/* Under Solaris 2.4, strtod returns the wrong value for the
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terminating character under some conditions. */
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const char *string = "NaN";
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char *term;
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strtod (string, &term);
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if (term != string && *(term - 1) == 0)
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exit (1);
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}
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exit (0);
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}
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]]
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)],
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ac_cv_func_strtod=yes,
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ac_cv_func_strtod=no,
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ac_cv_func_strtod=no
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)])
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if test $ac_cv_func_strtod = no; then
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_AC_LIBOBJ_STRTOD
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fi
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])
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# AU::AM_FUNC_STRTOD
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# ------------------
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AU_ALIAS([AM_FUNC_STRTOD], [AC_FUNC_STRTOD])
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# AC_FUNC_UTIME_NULL
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# ------------------
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AN_FUNCTION([utime], [AC_FUNC_UTIME_NULL])
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AC_DEFUN([AC_FUNC_UTIME_NULL],
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[AC_CACHE_CHECK(whether utime accepts a null argument, ac_cv_func_utime_null,
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[# Sequent interprets utime(file, 0) to mean use start of epoch. Wrong.
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AC_RUN_IFELSE(
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[AC_LANG_SOURCE(
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[[
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#include <sys/types.h>
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#include <utime.h>
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#include <sys/stat.h>
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#include <unistd.h>
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int
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main()
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{
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struct stat s, t;
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exit (!(stat ("conftest.data", &s) == 0
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&& utime ("conftest.data", (const utimbuf *)0) == 0
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&& stat ("conftest.data", &t) == 0
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&& t.st_mtime >= s.st_mtime
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&& t.st_mtime - s.st_mtime < 120));
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}
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]]
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)],
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ac_cv_func_utime_null=yes,
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ac_cv_func_utime_null=no,
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ac_cv_func_utime_null=no
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)])
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if test $ac_cv_func_utime_null = yes; then
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AC_DEFINE(HAVE_UTIME_NULL, 1,
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[Define to 1 if `utime(file, NULL)' sets file's timestamp to the
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present.])
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fi
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])# AC_FUNC_UTIME_NULL
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# AU::AC_UTIME_NULL
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# -----------------
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AU_ALIAS([AC_UTIME_NULL], [AC_FUNC_UTIME_NULL])
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