1 dnl ---------------------------------------------------------------------- 2 dnl This whole bit snagged from libgfortran. 3 4 sinclude(../libtool.m4) 5 sinclude(../config/enable.m4) 6 sinclude(../config/cet.m4) 7 dnl The lines below arrange for aclocal not to bring an installed 8 dnl libtool.m4 into aclocal.m4, while still arranging for automake to 9 dnl add a definition of LIBTOOL to Makefile.in. 10 ifelse(,,,[AC_SUBST(LIBTOOL) 11 AC_DEFUN([AM_PROG_LIBTOOL]) 12 AC_DEFUN([AC_LIBTOOL_DLOPEN]) 13 AC_DEFUN([AC_PROG_LD]) 14 ]) 15 16 dnl Check whether POSIX's signgam is defined in math.h. 17 AC_DEFUN([LIBQUAD_CHECK_MATH_H_SIGNGAM], [ 18 AC_CACHE_CHECK([whether the math.h includes POSIX's signgam], 19 libgfor_cv_have_math_h_signgam, [ 20 save_CFLAGS="$CFLAGS" 21 CFLAGS="$CFLAGS -Werror" 22 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 23 #include <math.h> 24 void foo(void) { signgam = 1; }]], [])], 25 libgfor_cv_have_math_h_signgam=yes, 26 libgfor_cv_have_math_h_signgam=no) 27 CFLAGS="$save_CFLAGS"]) 28 if test $libgfor_cv_have_math_h_signgam = yes; then 29 AC_DEFINE(HAVE_MATH_H_SIGNGAM, 1, 30 [Define to 1 if the math.h includes POSIX's signgam.]) 31 fi]) 32
Indexes created Wed Mar 04 15:26:31 UTC 2026