aom_configure.cmake 7.56 KB
Newer Older
Tom Finegan's avatar
Tom Finegan committed
1
2
3
4
5
6
7
8
9
10
11
12
##
## Copyright (c) 2016, Alliance for Open Media. All rights reserved
##
## This source code is subject to the terms of the BSD 2 Clause License and
## the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
## was not distributed with this source code in the LICENSE file, you can
## obtain it at www.aomedia.org/license/software. If the Alliance for Open
## Media Patent License 1.0 was not distributed with this source code in the
## PATENTS file, you can obtain it at www.aomedia.org/license/patent.
##
cmake_minimum_required(VERSION 3.2)

13
include("${AOM_ROOT}/build/cmake/aom_config_defaults.cmake")
Tom Finegan's avatar
Tom Finegan committed
14
include("${AOM_ROOT}/build/cmake/compiler_flags.cmake")
15
include("${AOM_ROOT}/build/cmake/compiler_tests.cmake")
Tom Finegan's avatar
Tom Finegan committed
16

17
18
19
20
21
# Detect target CPU.
if (NOT AOM_TARGET_CPU)
  # TODO(tomfinegan): This will not work for a cross compile. Target CPU and
  # system will have to come from a toolchain file or the cmake command line.
  set(AOM_TARGET_CPU ${CMAKE_SYSTEM_PROCESSOR})
22
23
24
  if (AOM_TARGET_CPU STREQUAL "AMD64")
    set(AOM_TARGET_CPU "x86_64")
  endif ()
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
  set(AOM_TARGET_SYSTEM ${CMAKE_SYSTEM_NAME})
  if (NOT EXISTS "${AOM_ROOT}/build/cmake/targets/${AOM_TARGET_CPU}.cmake")
    message("No RTCD template for ${AOM_TARGET_CPU}, using generic.")
    set(AOM_TARGET_CPU "generic")
  endif ()
  if (NOT AOM_TARGET_CPU STREQUAL "generic")
    find_program(YASM_EXECUTABLE yasm $ENV{YASM_PATH})
    if (NOT YASM_EXECUTABLE)
      message(WARNING "Unable to find yasm, using generic as target CPU.")
      set(AOM_TARGET_CPU "generic")
    endif ()
  endif ()
endif ()

include("${AOM_ROOT}/build/cmake/targets/${AOM_TARGET_CPU}.cmake")
Tom Finegan's avatar
Tom Finegan committed
40
41

include(FindGit)
Tom Finegan's avatar
Tom Finegan committed
42
include(FindPerl)
Tom Finegan's avatar
Tom Finegan committed
43

44
45
46
47
48
49
50
51
52
# Test compiler flags.
if (MSVC)
  add_compiler_flag_if_supported("/W3")
  # Disable MSVC warnings that suggest making code non-portable.
  add_compiler_flag_if_supported("/wd4996")
  if (ENABLE_WERROR)
    add_compiler_flag_if_supported("/WX")
  endif ()
else ()
53
  require_c_flag("-std=c99" YES)
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
  add_compiler_flag_if_supported("-Wall")
  add_compiler_flag_if_supported("-Wdisabled-optimization")
  add_compiler_flag_if_supported("-Wextra")
  add_compiler_flag_if_supported("-Wfloat-conversion")
  add_compiler_flag_if_supported("-Wimplicit-function-declaration")
  add_compiler_flag_if_supported("-Wpointer-arith")
  add_compiler_flag_if_supported("-Wshadow")
  add_compiler_flag_if_supported("-Wsign-compare")
  add_compiler_flag_if_supported("-Wtype-limits")
  add_compiler_flag_if_supported("-Wuninitialized")
  add_compiler_flag_if_supported("-Wunused")
  add_compiler_flag_if_supported("-Wvla")
  if (ENABLE_WERROR)
    add_compiler_flag_if_supported("-Werror")
  endif ()
  # Flag(s) added here negate CMake defaults and produce build output similar
  # to the existing configure/make build system.
  add_compiler_flag_if_supported("-Wno-unused-function")
endif ()
Tom Finegan's avatar
Tom Finegan committed
73

74
# Test compiler support.
75
76
77
78
AomCheckSourceCompiles("inline_check" "static inline void function(void) {}"
                       HAVE_INLINE)
if (HAVE_INLINE EQUAL 1)
  set(INLINE "inline")
79
endif ()
80
81
82
83
84
85
86
87
# TODO(tomfinegan): aom_ports_check is legacy; HAVE_AOM_PORTS is not used
# anywhere in the aom sources. To be removed after parity with the legacy
# build system stops being important.
AomCheckSourceCompiles("aom_ports_check"
                       "#include \"${AOM_ROOT}/aom/aom_integer.h\""
                       HAVE_AOM_PORTS)
AomCheckSourceCompiles("pthread_check" "#include <pthread.h>" HAVE_PTHREAD_H)
AomCheckSourceCompiles("unistd_check" "#include <unistd.h>" HAVE_UNISTD_H)
88

89
90
91
# TODO(tomfinegan): consume trailing whitespace after configure_file() when
# target platform check produces empty INLINE and RESTRICT values (aka empty
# values require special casing).
Tom Finegan's avatar
Tom Finegan committed
92
configure_file("${AOM_ROOT}/build/cmake/aom_config.h.cmake"
Tom Finegan's avatar
Tom Finegan committed
93
               "${AOM_CONFIG_DIR}/aom_config.h")
94
95
configure_file("${AOM_ROOT}/build/cmake/aom_config.asm.cmake"
               "${AOM_CONFIG_DIR}/aom_config.asm")
Tom Finegan's avatar
Tom Finegan committed
96
97
98

# Read the current git hash.
find_package(Git)
99
100
set(AOM_GIT_DESCRIPTION)
set(AOM_GIT_HASH)
Tom Finegan's avatar
Tom Finegan committed
101
if (GIT_FOUND)
102
103
  # TODO(tomfinegan): Add build rule so users don't have to re-run cmake to
  # create accurately versioned cmake builds.
Tom Finegan's avatar
Tom Finegan committed
104
105
106
  execute_process(COMMAND ${GIT_EXECUTABLE}
                  --git-dir=${AOM_ROOT}/.git rev-parse HEAD
                  OUTPUT_VARIABLE AOM_GIT_HASH)
107
108
  execute_process(COMMAND ${GIT_EXECUTABLE} --git-dir=${AOM_ROOT}/.git describe
                  OUTPUT_VARIABLE AOM_GIT_DESCRIPTION ERROR_QUIET)
Tom Finegan's avatar
Tom Finegan committed
109
  # Consume the newline at the end of the git output.
110
111
112
  string(STRIP "${AOM_GIT_HASH}" AOM_GIT_HASH)
  string(STRIP "${AOM_GIT_DESCRIPTION}" AOM_GIT_DESCRIPTION)
endif ()
Tom Finegan's avatar
Tom Finegan committed
113
114
115
116
117
118
119
120
121
122
123
124

# TODO(tomfinegan): An alternative to dumping the configure command line to
# aom_config.c is needed in cmake. Normal cmake generation runs do not make the
# command line available in the cmake script. For now, we just set the variable
# to the following. The configure_file() command will expand the message in
# aom_config.c.
# Note: This message isn't strictly true. When cmake is run in script mode (with
# the -P argument), CMAKE_ARGC and CMAKE_ARGVn are defined (n = 0 through
# n = CMAKE_ARGC become valid). Normal cmake generation runs do not make the
# information available.
set(AOM_CMAKE_CONFIG "cmake")
configure_file("${AOM_ROOT}/build/cmake/aom_config.c.cmake"
125
126
               "${AOM_CONFIG_DIR}/aom_config.c")

Tom Finegan's avatar
Tom Finegan committed
127
# Find Perl and generate the RTCD sources.
128
129
130
131
find_package(Perl)
if (NOT PERL_FOUND)
  message(FATAL_ERROR "Perl is required to build libaom.")
endif ()
Tom Finegan's avatar
Tom Finegan committed
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
configure_file(
  "${AOM_ROOT}/build/cmake/targets/rtcd_templates/${AOM_ARCH}.rtcd.cmake"
  "${AOM_CONFIG_DIR}/${AOM_ARCH}.rtcd")

set(AOM_RTCD_CONFIG_FILE_LIST
    "${AOM_ROOT}/aom_dsp/aom_dsp_rtcd_defs.pl"
    "${AOM_ROOT}/aom_scale/aom_scale_rtcd.pl"
    "${AOM_ROOT}/av1/common/av1_rtcd_defs.pl")
set(AOM_RTCD_HEADER_FILE_LIST
    "${AOM_CONFIG_DIR}/aom_dsp_rtcd.h"
    "${AOM_CONFIG_DIR}/aom_scale_rtcd.h"
    "${AOM_CONFIG_DIR}/av1_rtcd.h")
set(AOM_RTCD_SOURCE_FILE_LIST
    "${AOM_ROOT}/aom_dsp/aom_dsp_rtcd.c"
    "${AOM_ROOT}/aom_scale/aom_scale_rtcd.c"
    "${AOM_ROOT}/av1/common/av1_rtcd.c")
148
set(AOM_RTCD_SYMBOL_LIST aom_dsp_rtcd aom_scale_rtcd av1_rtcd)
Tom Finegan's avatar
Tom Finegan committed
149
150
list(LENGTH AOM_RTCD_SYMBOL_LIST AOM_RTCD_CUSTOM_COMMAND_COUNT)
math(EXPR AOM_RTCD_CUSTOM_COMMAND_COUNT "${AOM_RTCD_CUSTOM_COMMAND_COUNT} - 1")
151

Tom Finegan's avatar
Tom Finegan committed
152
153
154
155
156
foreach(NUM RANGE ${AOM_RTCD_CUSTOM_COMMAND_COUNT})
  list(GET AOM_RTCD_CONFIG_FILE_LIST ${NUM} AOM_RTCD_CONFIG_FILE)
  list(GET AOM_RTCD_HEADER_FILE_LIST ${NUM} AOM_RTCD_HEADER_FILE)
  list(GET AOM_RTCD_SOURCE_FILE_LIST ${NUM} AOM_RTCD_SOURCE_FILE)
  list(GET AOM_RTCD_SYMBOL_LIST ${NUM} AOM_RTCD_SYMBOL)
157
158
159
160
161
  execute_process(
    COMMAND ${PERL_EXECUTABLE} "${AOM_ROOT}/build/make/rtcd.pl"
      --arch=${AOM_ARCH} --sym=${AOM_RTCD_SYMBOL}
      --config=${AOM_CONFIG_DIR}/${AOM_ARCH}.rtcd ${AOM_RTCD_CONFIG_FILE}
    OUTPUT_FILE ${AOM_RTCD_HEADER_FILE})
Tom Finegan's avatar
Tom Finegan committed
162
163
endforeach()

164
165
166
167
168
169
170
171
172
173
174
175
176
function (add_rtcd_build_step config output source symbol)
  add_custom_command(
    OUTPUT ${output}
    COMMAND ${PERL_EXECUTABLE}
    ARGS "${AOM_ROOT}/build/make/rtcd.pl" --arch=${AOM_ARCH} --sym=${symbol}
      --config=${AOM_CONFIG_DIR}/${AOM_ARCH}.rtcd ${config} > ${output}
    DEPENDS ${config}
    COMMENT "Generating ${output}"
    WORKING_DIRECTORY ${AOM_CONFIG_DIR}
    VERBATIM)
  set_property(SOURCE ${source} PROPERTY OBJECT_DEPENDS ${output})
  set_property(SOURCE ${output} PROPERTY GENERATED)
endfunction ()
177
178
179
180
181
182
183
184
185

# Generate aom_version.h.
if ("${AOM_GIT_DESCRIPTION}" STREQUAL "")
  set(AOM_GIT_DESCRIPTION "${AOM_ROOT}/CHANGELOG")
endif ()
execute_process(
  COMMAND ${PERL_EXECUTABLE} "${AOM_ROOT}/build/cmake/aom_version.pl"
  --version_data=${AOM_GIT_DESCRIPTION}
  --version_filename=${AOM_CONFIG_DIR}/aom_version.h)