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Commit | Line | Data |
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1ec601bf FXC |
1 | dnl ---------------------------------------------------------------------- |
2 | dnl This whole bit snagged from libgfortran. | |
3 | ||
1ec601bf | 4 | sinclude(../libtool.m4) |
fda26abe IT |
5 | sinclude(../config/enable.m4) |
6 | sinclude(../config/cet.m4) | |
1ec601bf FXC |
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 | ]) | |
5a09d908 TB |
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]) |