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configure.in: additional note suggested by Greg Troxel

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This commit is contained in:
Neil Jerram 2008-02-12 21:00:05 +00:00
parent 5b5179f895
commit 8cd5eae91d
1 changed files with 5 additions and 2 deletions
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7
configure.in
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@ -720,8 +720,11 @@ AC_SEARCH_LIBS(crypt, crypt,
[AC_DEFINE(HAVE_CRYPT,1,
[Define to 1 if you have the `crypt' function.])])
# When compiling with GCC on some OSs (Solaris, AIX), _Complex_I doesn't work;
# in the reported cases so far, 1.0fi works well instead.
# When compiling with GCC on some OSs (Solaris, AIX), _Complex_I doesn't
# work; in the reported cases so far, 1.0fi works well instead. According
# to the C99 spec, the complex.h header must provide a working definition
# of _Complex_I, so we always try _Complex_I first. The 1.0fi fallback
# is a workaround for the failure of some systems to conform to C99.
if test "$ac_cv_type_complex_double" = yes; then
AC_MSG_CHECKING([for i])
AC_TRY_COMPILE([