diff options
Diffstat (limited to 'libraries/base/aclocal.m4')
| -rw-r--r-- | libraries/base/aclocal.m4 | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/libraries/base/aclocal.m4 b/libraries/base/aclocal.m4 index 3a028dda16..0336a092a8 100644 --- a/libraries/base/aclocal.m4 +++ b/libraries/base/aclocal.m4 @@ -253,3 +253,19 @@ AS_IF([test "$ac_res" != no], [$6])dnl AS_VAR_POPDEF([ac_Search])dnl ]) + +AC_DEFUN([FP_CHECK_ENVIRON], +[ + dnl-------------------------------------------------------------------- + dnl * Check whether the libc headers provide a declaration for the + dnl environ symbol. If not then we will provide one in RtsSymbols.c. + dnl See #20512, #20577, #20861. + dnl + dnl N.B. Windows declares environ in <stdlib.h>; most others declare it + dnl in <unistd.h>. + dnl-------------------------------------------------------------------- + AC_CHECK_DECLS([environ], [], [], [ + #include <stdlib.h> + #include <unistd.h> + ]) +]) |