File: acinclude.m4

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dnl UD macros for netcdf configure

dnl 
dnl UD_CHECK_IEEE
dnl If the 'double' is not an IEEE double
dnl or the 'float' is not and IEEE single,
dnl define NO_IEEE_FLOAT
dnl
AC_DEFUN([UD_CHECK_IEEE],
[
AC_MSG_CHECKING(for IEEE floating point format)
AC_TRY_RUN([#ifndef NO_FLOAT_H
#include <float.h>
#endif

#define EXIT_NOTIEEE	1
#define EXIT_MAYBEIEEE	0

int
main()
{
#if	defined(FLT_RADIX)	&& FLT_RADIX != 2
		return EXIT_NOTIEEE;
#elif	defined(DBL_MAX_EXP)	&& DBL_MAX_EXP != 1024
		return EXIT_NOTIEEE;
#elif	defined(DBL_MANT_DIG)	&& DBL_MANT_DIG != 53
		return EXIT_NOTIEEE;
#elif 	defined(FLT_MAX_EXP)	&& !(FLT_MAX_EXP == 1024 || FLT_MAX_EXP == 128)
		return EXIT_NOTIEEE;
#elif	defined(FLT_MANT_DIG)	&& !(FLT_MANT_DIG == 53 || FLT_MANT_DIG == 24)
		return EXIT_NOTIEEE;
#else
	/* (assuming eight bit char) */
	if(sizeof(double) != 8)
		return EXIT_NOTIEEE;
	if(!(sizeof(float) == 4 || sizeof(float) == 8))
		return EXIT_NOTIEEE;

	return EXIT_MAYBEIEEE;
#endif
}],ac_cv_c_ieeefloat=yes, ac_cv_c_ieeefloat=no, :)
AC_MSG_RESULT($ac_cv_c_ieeefloat)
if test "$ac_cv_c_ieeefloat" = no; then
  AC_DEFINE([NO_IEEE_FLOAT], [], [no IEEE float on this platform])
fi
])


dnl
dnl Print which compilers are going to be used, the flags, and their
dnl locations. This is all to assist in debugging, and help with
dnl support questions.
dnl
AC_DEFUN([UD_DISPLAY_RESULTS],
[
AC_MSG_CHECKING(CPPFLAGS)
AC_MSG_RESULT($CPPFLAGS)
AC_MSG_CHECKING(CC CFLAGS)
AC_MSG_RESULT($CC $CFLAGS)
ud_type_cc=`type $CC`
AC_MSG_CHECKING(type $CC)
AC_MSG_RESULT($ud_type_cc)

AC_MSG_CHECKING(CXX)
if test -n "$CXX"; then
	AC_MSG_RESULT($CXX)
	AC_MSG_CHECKING(CXXFLAGS)
	AC_MSG_RESULT($CXXFLAGS)
	ud_type_CXX=`type $CXX`
	AC_MSG_CHECKING(type $CXX)
	AC_MSG_RESULT($ud_type_CXX)
else
	AC_MSG_RESULT(unset)
fi

AC_MSG_CHECKING(FC)
if test -n "$FC"; then
	AC_MSG_RESULT($FC)
	AC_MSG_CHECKING(FFLAGS)
	AC_MSG_RESULT($FFLAGS)
	ud_type_fc=`type $FC`
	AC_MSG_CHECKING(type $FC)
	AC_MSG_RESULT($ud_type_fc)
else
	AC_MSG_RESULT(unset)
fi

AC_MSG_CHECKING(F90)
if test -n "$F90"; then
	AC_MSG_RESULT($F90)
	AC_MSG_CHECKING(FCFLAGS)
	AC_MSG_RESULT($FCFLAGS)
	ud_type_F90=`type $F90`
	AC_MSG_CHECKING(type $F90)
	AC_MSG_RESULT($ud_type_F90)
else
	AC_MSG_RESULT(unset)
fi

AC_MSG_CHECKING(AR)
if test -n "$AR"; then
	AC_MSG_RESULT($AR)
	AC_MSG_CHECKING(AR_FLAGS)
	AC_MSG_RESULT($AR_FLAGS)
	ud_type_AR=`type $AR`
	AC_MSG_CHECKING(type $AR)
	AC_MSG_RESULT($ud_type_AR)
else
	AC_MSG_RESULT(unset)
fi

AC_MSG_CHECKING(NM)
if test -n "$NM"; then
	AC_MSG_RESULT($NM)
	AC_MSG_CHECKING(NMFLAGS)
	AC_MSG_RESULT($NMFLAGS)
#	ud_type_NM=`type $NM`
#	AC_MSG_CHECKING(type $NM)
#	AC_MSG_RESULT($ud_type_NM)
else
	AC_MSG_RESULT(unset)
fi

])

dnl Find the full path of a header file
dnl
dnl UD_CHECK_HEADER_PATH(file, [action-if-found], [action-if-not-found])
dnl Example:
dnl UD_CHECK_HEADER_PATH([math.h])
dnl AC_MSG_NOTICE([ac_cv_header_path_math_h=$ac_cv_header_path_math_h])
dnl
dnl
AC_DEFUN([UD_CHECK_HEADER_PATH],
[
    AS_VAR_PUSHDEF([ac_Path], [ac_cv_header_path_$1])dnl
    AC_CACHE_CHECK(
       [for full path of header file $1], [ac_Path],
       [AC_PREPROC_IFELSE(
           [AC_LANG_PROGRAM([[#include <$1>]])],
           [AS_VAR_SET([ac_Path], [`sed -n '/\.h"/s/.*"\(.*\)".*/\1/p' conftest.i | grep -m 1 $1`])],
           [AC_MSG_RESULT([not found])]
       )])
    AS_VAR_SET_IF([ac_Path], [$2], [$3])
    AS_VAR_POPDEF([ac_Path])dnl
])

# ===========================================================================
#    https://www.gnu.org/software/autoconf-archive/ax_valgrind_check.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_VALGRIND_DFLT(memcheck|helgrind|drd|sgcheck, on|off)
#   AX_VALGRIND_CHECK()
#
# DESCRIPTION
#
#   AX_VALGRIND_CHECK checks whether Valgrind is present and, if so, allows
#   running `make check` under a variety of Valgrind tools to check for
#   memory and threading errors.
#
#   Defines VALGRIND_CHECK_RULES which should be substituted in your
#   Makefile; and $enable_valgrind which can be used in subsequent configure
#   output. VALGRIND_ENABLED is defined and substituted, and corresponds to
#   the value of the --enable-valgrind option, which defaults to being
#   enabled if Valgrind is installed and disabled otherwise. Individual
#   Valgrind tools can be disabled via --disable-valgrind-<tool>, the
#   default is configurable via the AX_VALGRIND_DFLT command or is to use
#   all commands not disabled via AX_VALGRIND_DFLT. All AX_VALGRIND_DFLT
#   calls must be made before the call to AX_VALGRIND_CHECK.
#
#   If unit tests are written using a shell script and automake's
#   LOG_COMPILER system, the $(VALGRIND) variable can be used within the
#   shell scripts to enable Valgrind, as described here:
#
#     https://www.gnu.org/software/gnulib/manual/html_node/Running-self_002dtests-under-valgrind.html
#
#   Usage example:
#
#   configure.ac:
#
#     AX_VALGRIND_DFLT([sgcheck], [off])
#     AX_VALGRIND_CHECK
#
#   in each Makefile.am with tests:
#
#     @VALGRIND_CHECK_RULES@
#     VALGRIND_SUPPRESSIONS_FILES = my-project.supp
#     EXTRA_DIST = my-project.supp
#
#   This results in a "check-valgrind" rule being added. Running `make
#   check-valgrind` in that directory will recursively run the module's test
#   suite (`make check`) once for each of the available Valgrind tools (out
#   of memcheck, helgrind and drd) while the sgcheck will be skipped unless
#   enabled again on the commandline with --enable-valgrind-sgcheck. The
#   results for each check will be output to test-suite-$toolname.log. The
#   target will succeed if there are zero errors and fail otherwise.
#
#   Alternatively, a "check-valgrind-$TOOL" rule will be added, for $TOOL in
#   memcheck, helgrind, drd and sgcheck. These are useful because often only
#   some of those tools can be ran cleanly on a codebase.
#
#   The macro supports running with and without libtool.
#
# LICENSE
#
#   Copyright (c) 2014, 2015, 2016 Philip Withnall <philip.withnall@collabora.co.uk>
#
#   Copying and distribution of this file, with or without modification, are
#   permitted in any medium without royalty provided the copyright notice
#   and this notice are preserved.  This file is offered as-is, without any
#   warranty.

# serial-17

dnl Configured tools
m4_define([valgrind_tool_list], [[memcheck], [helgrind], [drd], [sgcheck]])
m4_set_add_all([valgrind_exp_tool_set], [sgcheck])
m4_foreach([vgtool], [valgrind_tool_list],
           [m4_define([en_dflt_valgrind_]vgtool, [on])])

AC_DEFUN([AX_VALGRIND_DFLT],[
	m4_define([en_dflt_valgrind_$1], [$2])
])dnl

AM_EXTRA_RECURSIVE_TARGETS([check-valgrind])
m4_foreach([vgtool], [valgrind_tool_list],
	[AM_EXTRA_RECURSIVE_TARGETS([check-valgrind-]vgtool)])

AC_DEFUN([AX_VALGRIND_CHECK],[
	dnl Check for --enable-valgrind
	AC_ARG_ENABLE([valgrind],
	              [AS_HELP_STRING([--enable-valgrind], [Whether to enable Valgrind on the unit tests])],
	              [enable_valgrind=$enableval],[enable_valgrind=])

	AS_IF([test "$enable_valgrind" != "no"],[
		# Check for Valgrind.
		AC_CHECK_PROG([VALGRIND],[valgrind],[valgrind])
		AS_IF([test "$VALGRIND" = ""],[
			AS_IF([test "$enable_valgrind" = "yes"],[
				AC_MSG_ERROR([Could not find valgrind; either install it or reconfigure with --disable-valgrind])
			],[
				enable_valgrind=no
			])
		],[
			enable_valgrind=yes
		])
	])

	AM_CONDITIONAL([VALGRIND_ENABLED],[test "$enable_valgrind" = "yes"])
	AC_SUBST([VALGRIND_ENABLED],[$enable_valgrind])

	# Check for Valgrind tools we care about.
	[valgrind_enabled_tools=]
	m4_foreach([vgtool],[valgrind_tool_list],[
		AC_ARG_ENABLE([valgrind-]vgtool,
		    m4_if(m4_defn([en_dflt_valgrind_]vgtool),[off],dnl
[AS_HELP_STRING([--enable-valgrind-]vgtool, [Whether to use ]vgtool[ during the Valgrind tests])],dnl
[AS_HELP_STRING([--disable-valgrind-]vgtool, [Whether to skip ]vgtool[ during the Valgrind tests])]),
		              [enable_valgrind_]vgtool[=$enableval],
		              [enable_valgrind_]vgtool[=])
		AS_IF([test "$enable_valgrind" = "no"],[
			enable_valgrind_]vgtool[=no],
		      [test "$enable_valgrind_]vgtool[" ]dnl
m4_if(m4_defn([en_dflt_valgrind_]vgtool), [off], [= "yes"], [!= "no"]),[
			AC_CACHE_CHECK([for Valgrind tool ]vgtool,
			               [ax_cv_valgrind_tool_]vgtool,[
				ax_cv_valgrind_tool_]vgtool[=no
				m4_set_contains([valgrind_exp_tool_set],vgtool,
				    [m4_define([vgtoolx],[exp-]vgtool)],
				    [m4_define([vgtoolx],vgtool)])
				AS_IF([`$VALGRIND --tool=]vgtoolx[ --help >/dev/null 2>&1`],[
					ax_cv_valgrind_tool_]vgtool[=yes
				])
			])
			AS_IF([test "$ax_cv_valgrind_tool_]vgtool[" = "no"],[
				AS_IF([test "$enable_valgrind_]vgtool[" = "yes"],[
					AC_MSG_ERROR([Valgrind does not support ]vgtool[; reconfigure with --disable-valgrind-]vgtool)
				],[
					enable_valgrind_]vgtool[=no
				])
			],[
				enable_valgrind_]vgtool[=yes
			])
		])
		AS_IF([test "$enable_valgrind_]vgtool[" = "yes"],[
			valgrind_enabled_tools="$valgrind_enabled_tools ]m4_bpatsubst(vgtool,[^exp-])["
		])
		AC_SUBST([ENABLE_VALGRIND_]vgtool,[$enable_valgrind_]vgtool)
	])
	AC_SUBST([valgrind_tools],["]m4_join([ ], valgrind_tool_list)["])
	AC_SUBST([valgrind_enabled_tools],[$valgrind_enabled_tools])

[VALGRIND_CHECK_RULES='
# Valgrind check
#
# Optional:
#  - VALGRIND_SUPPRESSIONS_FILES: Space-separated list of Valgrind suppressions
#    files to load. (Default: empty)
#  - VALGRIND_FLAGS: General flags to pass to all Valgrind tools.
#    (Default: --num-callers=30)
#  - VALGRIND_$toolname_FLAGS: Flags to pass to Valgrind $toolname (one of:
#    memcheck, helgrind, drd, sgcheck). (Default: various)

# Optional variables
VALGRIND_SUPPRESSIONS ?= $(addprefix --suppressions=,$(VALGRIND_SUPPRESSIONS_FILES))
VALGRIND_FLAGS ?= --num-callers=30
VALGRIND_memcheck_FLAGS ?= --leak-check=full --show-reachable=no
VALGRIND_helgrind_FLAGS ?= --history-level=approx
VALGRIND_drd_FLAGS ?=
VALGRIND_sgcheck_FLAGS ?=

# Internal use
valgrind_log_files = $(addprefix test-suite-,$(addsuffix .log,$(valgrind_tools)))

valgrind_memcheck_flags = --tool=memcheck $(VALGRIND_memcheck_FLAGS)
valgrind_helgrind_flags = --tool=helgrind $(VALGRIND_helgrind_FLAGS)
valgrind_drd_flags = --tool=drd $(VALGRIND_drd_FLAGS)
valgrind_sgcheck_flags = --tool=exp-sgcheck $(VALGRIND_sgcheck_FLAGS)

valgrind_quiet = $(valgrind_quiet_$(V))
valgrind_quiet_ = $(valgrind_quiet_$(AM_DEFAULT_VERBOSITY))
valgrind_quiet_0 = --quiet
valgrind_v_use   = $(valgrind_v_use_$(V))
valgrind_v_use_  = $(valgrind_v_use_$(AM_DEFAULT_VERBOSITY))
valgrind_v_use_0 = @echo "  USE   " $(patsubst check-valgrind-%-am,%,$''@):;

# Support running with and without libtool.
ifneq ($(LIBTOOL),)
valgrind_lt = $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=execute
else
valgrind_lt =
endif

# Use recursive makes in order to ignore errors during check
check-valgrind-am:
ifeq ($(VALGRIND_ENABLED),yes)
	$(A''M_V_at)$(MAKE) $(AM_MAKEFLAGS) -k \
		$(foreach tool, $(valgrind_enabled_tools), check-valgrind-$(tool))
else
	@echo "Need to reconfigure with --enable-valgrind"
endif

# Valgrind running
VALGRIND_TESTS_ENVIRONMENT = \
	$(TESTS_ENVIRONMENT) \
	env VALGRIND=$(VALGRIND) \
	G_SLICE=always-malloc,debug-blocks \
	G_DEBUG=fatal-warnings,fatal-criticals,gc-friendly

VALGRIND_LOG_COMPILER = \
	$(valgrind_lt) \
	$(VALGRIND) $(VALGRIND_SUPPRESSIONS) --error-exitcode=1 $(VALGRIND_FLAGS)

define valgrind_tool_rule
check-valgrind-$(1)-am:
ifeq ($$(VALGRIND_ENABLED)-$$(ENABLE_VALGRIND_$(1)),yes-yes)
ifneq ($$(TESTS),)
	$$(valgrind_v_use)$$(MAKE) check-TESTS \
		TESTS_ENVIRONMENT="$$(VALGRIND_TESTS_ENVIRONMENT)" \
		LOG_COMPILER="$$(VALGRIND_LOG_COMPILER)" \
		LOG_FLAGS="$$(valgrind_$(1)_flags)" \
		TEST_SUITE_LOG=test-suite-$(1).log
endif
else ifeq ($$(VALGRIND_ENABLED),yes)
	@echo "Need to reconfigure with --enable-valgrind-$(1)"
else
	@echo "Need to reconfigure with --enable-valgrind"
endif
endef

$(foreach tool,$(valgrind_tools),$(eval $(call valgrind_tool_rule,$(tool))))

A''M_DISTCHECK_CONFIGURE_FLAGS ?=
A''M_DISTCHECK_CONFIGURE_FLAGS += --disable-valgrind

MOSTLYCLEANFILES ?=
MOSTLYCLEANFILES += $(valgrind_log_files)

.PHONY: check-valgrind $(add-prefix check-valgrind-,$(valgrind_tools))
']

	AC_SUBST([VALGRIND_CHECK_RULES])
	m4_ifdef([_AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE([VALGRIND_CHECK_RULES])])
])