mirror of git://gcc.gnu.org/git/gcc.git
30 lines
1.1 KiB
Plaintext
30 lines
1.1 KiB
Plaintext
dnl ----------------------------------------------------------------------
|
|
dnl This whole bit snagged from libgfortran.
|
|
|
|
sinclude(../libtool.m4)
|
|
dnl The lines below arrange for aclocal not to bring an installed
|
|
dnl libtool.m4 into aclocal.m4, while still arranging for automake to
|
|
dnl add a definition of LIBTOOL to Makefile.in.
|
|
ifelse(,,,[AC_SUBST(LIBTOOL)
|
|
AC_DEFUN([AM_PROG_LIBTOOL])
|
|
AC_DEFUN([AC_LIBTOOL_DLOPEN])
|
|
AC_DEFUN([AC_PROG_LD])
|
|
])
|
|
|
|
dnl Check whether POSIX's signgam is defined in math.h.
|
|
AC_DEFUN([LIBQUAD_CHECK_MATH_H_SIGNGAM], [
|
|
AC_CACHE_CHECK([whether the math.h includes POSIX's signgam],
|
|
libgfor_cv_have_math_h_signgam, [
|
|
save_CFLAGS="$CFLAGS"
|
|
CFLAGS="$CFLAGS -Werror"
|
|
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
|
|
#include <math.h>
|
|
void foo(void) { signgam = 1; }]], [])],
|
|
libgfor_cv_have_math_h_signgam=yes,
|
|
libgfor_cv_have_math_h_signgam=no)
|
|
CFLAGS="$save_CFLAGS"])
|
|
if test $libgfor_cv_have_math_h_signgam = yes; then
|
|
AC_DEFINE(HAVE_MATH_H_SIGNGAM, 1,
|
|
[Define to 1 if the math.h includes POSIX's signgam.])
|
|
fi])
|