summaryrefslogtreecommitdiffstats
path: root/src/c-ares/m4/ax_code_coverage.m4
blob: 5120c3bb1c089578bc8aef4d8939c5d9a68ca02f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
# ===========================================================================
#     http://www.gnu.org/software/autoconf-archive/ax_code_coverage.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_CODE_COVERAGE()
#
# DESCRIPTION
#
#   Defines CODE_COVERAGE_CFLAGS and CODE_COVERAGE_LDFLAGS which should be
#   included in the CFLAGS and LIBS/LDFLAGS variables of every build target
#   (program or library) which should be built with code coverage support.
#   Also defines CODE_COVERAGE_RULES which should be substituted in your
#   Makefile; and $enable_code_coverage which can be used in subsequent
#   configure output. CODE_COVERAGE_ENABLED is defined and substituted, and
#   corresponds to the value of the --enable-code-coverage option, which
#   defaults to being disabled.
#
#   Test also for gcov program and create GCOV variable that could be
#   substituted.
#
#   Note that all optimisation flags in CFLAGS must be disabled when code
#   coverage is enabled.
#
#   Usage example:
#
#   configure.ac:
#
#     AX_CODE_COVERAGE
#
#   Makefile.am:
#
#     @CODE_COVERAGE_RULES@
#     my_program_LIBS = ... $(CODE_COVERAGE_LDFLAGS) ...
#     my_program_CFLAGS = ... $(CODE_COVERAGE_CFLAGS) ...
#
#   This results in a "check-code-coverage" rule being added to any
#   Makefile.am which includes "@CODE_COVERAGE_RULES@" (assuming the module
#   has been configured with --enable-code-coverage). Running `make
#   check-code-coverage` in that directory will run the module's test suite
#   (`make check`) and build a code coverage report detailing the code which
#   was touched, then print the URI for the report.
#
#   This code was derived from Makefile.decl in GLib, originally licenced
#   under LGPLv2.1+.
#
# LICENSE
#
#   Copyright (c) 2012 Philip Withnall
#   Copyright (c) 2012 Xan Lopez
#   Copyright (c) 2012 Christian Persch
#   Copyright (c) 2012 Paolo Borelli
#   Copyright (c) 2012 Dan Winship
#   Copyright (c) 2015 Bastien ROUCARIES
#
#   This library is free software; you can redistribute it and/or modify it
#   under the terms of the GNU Lesser General Public License as published by
#   the Free Software Foundation; either version 2.1 of the License, or (at
#   your option) any later version.
#
#   This library is distributed in the hope that it will be useful, but
#   WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
#   General Public License for more details.
#
#   You should have received a copy of the GNU Lesser General Public License
#   along with this program. If not, see <http://www.gnu.org/licenses/>.

#serial 5

AC_DEFUN([AX_CODE_COVERAGE],[
	dnl Check for --enable-code-coverage
	AC_REQUIRE([AC_PROG_SED])

	# allow to override gcov location
	AC_ARG_WITH([gcov],
	  [AS_HELP_STRING([--with-gcov[=GCOV]], [use given GCOV for coverage (GCOV=gcov).])],
	  [_AX_CODE_COVERAGE_GCOV_PROG_WITH=$with_gcov],
	  [_AX_CODE_COVERAGE_GCOV_PROG_WITH=gcov])

	AC_MSG_CHECKING([whether to build with code coverage support])
	AC_ARG_ENABLE([code-coverage],
	  AS_HELP_STRING([--enable-code-coverage],
	  [Whether to enable code coverage support]),,
	  enable_code_coverage=no)

	AM_CONDITIONAL([CODE_COVERAGE_ENABLED], [test x$enable_code_coverage = xyes])
	AC_SUBST([CODE_COVERAGE_ENABLED], [$enable_code_coverage])
	AC_MSG_RESULT($enable_code_coverage)

	AS_IF([ test "$enable_code_coverage" = "yes" ], [
		# check for gcov
		AC_CHECK_TOOL([GCOV],
		  [$_AX_CODE_COVERAGE_GCOV_PROG_WITH],
		  [:])
		AS_IF([test "X$GCOV" = "X:"],
		  [AC_MSG_ERROR([gcov is needed to do coverage])])
		AC_SUBST([GCOV])

		dnl Check if gcc is being used
		AS_IF([ test "$GCC" = "no" ], [
			AC_MSG_ERROR([not compiling with gcc, which is required for gcov code coverage])
		])

		# List of supported lcov versions.
		lcov_version_list="1.6 1.7 1.8 1.9 1.10 1.11"

		AC_CHECK_PROG([LCOV], [lcov], [lcov])
		AC_CHECK_PROG([GENHTML], [genhtml], [genhtml])

		AS_IF([ test "$LCOV" ], [
			AC_CACHE_CHECK([for lcov version], ax_cv_lcov_version, [
				ax_cv_lcov_version=invalid
				lcov_version=`$LCOV -v 2>/dev/null | $SED -e 's/^.* //'`
				for lcov_check_version in $lcov_version_list; do
					if test "$lcov_version" = "$lcov_check_version"; then
						ax_cv_lcov_version="$lcov_check_version (ok)"
					fi
				done
			])
		], [
			lcov_msg="To enable code coverage reporting you must have one of the following lcov versions installed: $lcov_version_list"
			AC_MSG_ERROR([$lcov_msg])
		])

		case $ax_cv_lcov_version in
			""|invalid[)]
				lcov_msg="You must have one of the following versions of lcov: $lcov_version_list (found: $lcov_version)."
				AC_MSG_ERROR([$lcov_msg])
				LCOV="exit 0;"
			;;
		esac

		AS_IF([ test -z "$GENHTML" ], [
			AC_MSG_ERROR([Could not find genhtml from the lcov package])
		])

		dnl Build the code coverage flags
		CODE_COVERAGE_CFLAGS="-O0 -g -fprofile-arcs -ftest-coverage"
		CODE_COVERAGE_LDFLAGS="-lgcov"

		AC_SUBST([CODE_COVERAGE_CFLAGS])
		AC_SUBST([CODE_COVERAGE_LDFLAGS])

CODE_COVERAGE_RULES='
# Code coverage
#
# Optional:
#  - CODE_COVERAGE_DIRECTORY: Top-level directory for code coverage reporting.
#    (Default: $(top_builddir))
#  - CODE_COVERAGE_OUTPUT_FILE: Filename and path for the .info file generated
#    by lcov for code coverage. (Default:
#    $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage.info)
#  - CODE_COVERAGE_OUTPUT_DIRECTORY: Directory for generated code coverage
#    reports to be created. (Default:
#    $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage)
#  - CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH: --gcov-tool pathtogcov
#  - CODE_COVERAGE_LCOV_OPTIONS_DEFAULT: Extra options to pass to the lcov instance.
#    (Default: $CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH)
#  - CODE_COVERAGE_LCOV_OPTIONS: Extra options to pass to the lcov instance.
#    (Default: $CODE_COVERAGE_LCOV_OPTIONS_DEFAULT)
#  - CODE_COVERAGE_GENHTML_OPTIONS: Extra options to pass to the genhtml
#    instance. (Default: empty)
#  - CODE_COVERAGE_IGNORE_PATTERN: Extra glob pattern of files to ignore
#
# The generated report will be titled using the $(PACKAGE_NAME) and
# $(PACKAGE_VERSION). In order to add the current git hash to the title,
# use the git-version-gen script, available online.

# Optional variables
CODE_COVERAGE_DIRECTORY ?= $(top_builddir)
CODE_COVERAGE_OUTPUT_FILE ?= $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage.info
CODE_COVERAGE_OUTPUT_DIRECTORY ?= $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage
CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH ?= --gcov-tool "$(GCOV)"
CODE_COVERAGE_LCOV_OPTIONS_DEFAULT ?= $(CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH)
CODE_COVERAGE_LCOV_OPTIONS ?= $(CODE_COVERAGE_LCOV_OPTIONS_DEFAULT)
CODE_COVERAGE_GENHTML_OPTIONS ?=
CODE_COVERAGE_IGNORE_PATTERN ?=

code_coverage_quiet = $(code_coverage_quiet_$(V))
code_coverage_quiet_ =
code_coverage_quiet_0 = --quiet

# Use recursive makes in order to ignore errors during check
check-code-coverage:
	-$(MAKE) $(AM_MAKEFLAGS) -k check
	$(MAKE) $(AM_MAKEFLAGS) code-coverage-capture

# Capture code coverage data
code-coverage-capture: code-coverage-capture-hook
	$(LCOV) $(code_coverage_quiet) --directory $(CODE_COVERAGE_DIRECTORY) --capture --output-file "$(CODE_COVERAGE_OUTPUT_FILE).tmp" --test-name "$(PACKAGE_NAME)-$(PACKAGE_VERSION)" --no-checksum --compat-libtool $(CODE_COVERAGE_LCOV_OPTIONS)
	$(LCOV) $(code_coverage_quiet) --directory $(CODE_COVERAGE_DIRECTORY) --remove "$(CODE_COVERAGE_OUTPUT_FILE).tmp" "/tmp/*" $(CODE_COVERAGE_IGNORE_PATTERN) --output-file "$(CODE_COVERAGE_OUTPUT_FILE)"
	-@rm -f $(CODE_COVERAGE_OUTPUT_FILE).tmp
	LANG=C $(GENHTML) $(code_coverage_quiet) --prefix $(CODE_COVERAGE_DIRECTORY) --output-directory "$(CODE_COVERAGE_OUTPUT_DIRECTORY)" --title "$(PACKAGE_NAME)-$(PACKAGE_VERSION) Code Coverage" --legend --show-details "$(CODE_COVERAGE_OUTPUT_FILE)" $(CODE_COVERAGE_GENHTML_OPTIONS)
	@echo "file://$(abs_builddir)/$(CODE_COVERAGE_OUTPUT_DIRECTORY)/index.html"

# Hook rule executed before code-coverage-capture, overridable by the user
code-coverage-capture-hook:

clean: code-coverage-clean
code-coverage-clean:
	-$(LCOV) --directory $(top_builddir) -z
	-rm -rf $(CODE_COVERAGE_OUTPUT_FILE) $(CODE_COVERAGE_OUTPUT_FILE).tmp $(CODE_COVERAGE_OUTPUT_DIRECTORY)
	-find . -name "*.gcda" -o -name "*.gcov" -delete

GITIGNOREFILES ?=
GITIGNOREFILES += $(CODE_COVERAGE_OUTPUT_FILE) $(CODE_COVERAGE_OUTPUT_DIRECTORY)

DISTCHECK_CONFIGURE_FLAGS ?=
DISTCHECK_CONFIGURE_FLAGS += --disable-code-coverage

.PHONY: check-code-coverage code-coverage-capture code-coverage-capture-hook code-coverage-clean
'
	AC_SUBST([CODE_COVERAGE_RULES])
	])

	m4_ifdef([_AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE([CODE_COVERAGE_RULES])])
])