1*181254a7Smrgdnl ---------------------------------------------------------------------- 2*181254a7Smrgdnl This whole bit snagged from libgfortran. 3*181254a7Smrg 4*181254a7Smrgsinclude(../libtool.m4) 5*181254a7Smrgsinclude(../config/enable.m4) 6*181254a7Smrgsinclude(../config/cet.m4) 7*181254a7Smrgdnl The lines below arrange for aclocal not to bring an installed 8*181254a7Smrgdnl libtool.m4 into aclocal.m4, while still arranging for automake to 9*181254a7Smrgdnl add a definition of LIBTOOL to Makefile.in. 10*181254a7Smrgifelse(,,,[AC_SUBST(LIBTOOL) 11*181254a7SmrgAC_DEFUN([AM_PROG_LIBTOOL]) 12*181254a7SmrgAC_DEFUN([AC_LIBTOOL_DLOPEN]) 13*181254a7SmrgAC_DEFUN([AC_PROG_LD]) 14*181254a7Smrg]) 15*181254a7Smrg 16*181254a7Smrgdnl Check whether POSIX's signgam is defined in math.h. 17*181254a7SmrgAC_DEFUN([LIBQUAD_CHECK_MATH_H_SIGNGAM], [ 18*181254a7Smrg AC_CACHE_CHECK([whether the math.h includes POSIX's signgam], 19*181254a7Smrg libgfor_cv_have_math_h_signgam, [ 20*181254a7Smrg save_CFLAGS="$CFLAGS" 21*181254a7Smrg CFLAGS="$CFLAGS -Werror" 22*181254a7Smrg AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 23*181254a7Smrg#include <math.h> 24*181254a7Smrgvoid foo(void) { signgam = 1; }]], [])], 25*181254a7Smrg libgfor_cv_have_math_h_signgam=yes, 26*181254a7Smrg libgfor_cv_have_math_h_signgam=no) 27*181254a7Smrg CFLAGS="$save_CFLAGS"]) 28*181254a7Smrg if test $libgfor_cv_have_math_h_signgam = yes; then 29*181254a7Smrg AC_DEFINE(HAVE_MATH_H_SIGNGAM, 1, 30*181254a7Smrg [Define to 1 if the math.h includes POSIX's signgam.]) 31*181254a7Smrg fi]) 32