| dnl ---------------------------------------------------------------------- | |
| dnl This whole bit snagged from libgfortran. | |
| sinclude(../libtool.m4) | |
| sinclude(../config/enable.m4) | |
| sinclude(../config/cet.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]) |