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get the SIG constants for ourselves, rather than relying on HsBaseCon…
…fig.h
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Ross Paterson
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Aug 19, 2007
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Original file line number | Diff line number | Diff line change |
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# Empty file to avoid a dependency on automake: autoreconf calls aclocal to | ||
# generate a temporary aclocal.m4t when no aclocal.m4 is present. | ||
# FP_COMPUTE_INT(EXPRESSION, VARIABLE, INCLUDES, IF-FAILS) | ||
# -------------------------------------------------------- | ||
# Assign VARIABLE the value of the compile-time EXPRESSION using INCLUDES for | ||
# compilation. Execute IF-FAILS when unable to determine the value. Works for | ||
# cross-compilation, too. | ||
# | ||
# Implementation note: We are lazy and use an internal autoconf macro, but it | ||
# is supported in autoconf versions 2.50 up to the actual 2.57, so there is | ||
# little risk. | ||
AC_DEFUN([FP_COMPUTE_INT], | ||
[_AC_COMPUTE_INT([$1], [$2], [$3], [$4])[]dnl | ||
])# FP_COMPUTE_INT | ||
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# FP_CHECK_CONST(EXPRESSION, [INCLUDES = DEFAULT-INCLUDES], [VALUE-IF-FAIL = -1]) | ||
# ------------------------------------------------------------------------------- | ||
# Defines CONST_EXPRESSION to the value of the compile-time EXPRESSION, using | ||
# INCLUDES. If the value cannot be determined, use VALUE-IF-FAIL. | ||
AC_DEFUN([FP_CHECK_CONST], | ||
[AS_VAR_PUSHDEF([fp_Cache], [fp_cv_const_$1])[]dnl | ||
AC_CACHE_CHECK([value of $1], fp_Cache, | ||
[FP_COMPUTE_INT([$1], fp_check_const_result, [AC_INCLUDES_DEFAULT([$2])], | ||
[fp_check_const_result=m4_default([$3], ['-1'])]) | ||
AS_VAR_SET(fp_Cache, [$fp_check_const_result])])[]dnl | ||
AC_DEFINE_UNQUOTED(AS_TR_CPP([CONST_$1]), AS_VAR_GET(fp_Cache), [The value of $1.])[]dnl | ||
AS_VAR_POPDEF([fp_Cache])[]dnl | ||
])# FP_CHECK_CONST | ||
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# FP_CHECK_CONSTS_TEMPLATE(EXPRESSION...) | ||
# --------------------------------------- | ||
# autoheader helper for FP_CHECK_CONSTS | ||
m4_define([FP_CHECK_CONSTS_TEMPLATE], | ||
[AC_FOREACH([fp_Const], [$1], | ||
[AH_TEMPLATE(AS_TR_CPP(CONST_[]fp_Const), | ||
[The value of ]fp_Const[.])])[]dnl | ||
])# FP_CHECK_CONSTS_TEMPLATE | ||
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# FP_CHECK_CONSTS(EXPRESSION..., [INCLUDES = DEFAULT-INCLUDES], [VALUE-IF-FAIL = -1]) | ||
# ----------------------------------------------------------------------------------- | ||
# List version of FP_CHECK_CONST | ||
AC_DEFUN([FP_CHECK_CONSTS], | ||
[FP_CHECK_CONSTS_TEMPLATE([$1])dnl | ||
for fp_const_name in $1 | ||
do | ||
FP_CHECK_CONST([$fp_const_name], [$2], [$3]) | ||
done | ||
])# FP_CHECK_CONSTS |
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