-
Notifications
You must be signed in to change notification settings - Fork 0
/
FindPCHSupport.cmake
319 lines (233 loc) · 10.4 KB
/
FindPCHSupport.cmake
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
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
# - Try to find precompiled headers support for GCC 3.4 and 4.x
# Once done this will define:
#
# Variable:
# PCHSupport_FOUND
#
# Macro:
# ADD_PRECOMPILED_HEADER _targetName _input _dowarn
# ADD_PRECOMPILED_HEADER_TO_TARGET _targetName _input _pch_output_to_use _dowarn
# ADD_NATIVE_PRECOMPILED_HEADER _targetName _input _dowarn
# GET_NATIVE_PRECOMPILED_HEADER _targetName _input
IF(CMAKE_COMPILER_IS_GNUCXX)
EXEC_PROGRAM(
${CMAKE_CXX_COMPILER}
ARGS ${CMAKE_CXX_COMPILER_ARG1} -dumpversion
OUTPUT_VARIABLE gcc_compiler_version)
#MESSAGE("GCC Version: ${gcc_compiler_version}")
IF(gcc_compiler_version MATCHES "4\\.[0-9]\\.[0-9]")
SET(PCHSupport_FOUND TRUE)
ELSE(gcc_compiler_version MATCHES "4\\.[0-9]\\.[0-9]")
IF(gcc_compiler_version MATCHES "3\\.4\\.[0-9]")
SET(PCHSupport_FOUND TRUE)
ENDIF(gcc_compiler_version MATCHES "3\\.4\\.[0-9]")
ENDIF(gcc_compiler_version MATCHES "4\\.[0-9]\\.[0-9]")
SET(_PCH_include_prefix "-I")
ELSE(CMAKE_COMPILER_IS_GNUCXX)
IF(WIN32)
SET(PCHSupport_FOUND TRUE) # for experimental msvc support
SET(_PCH_include_prefix "/I")
ELSE(WIN32)
SET(PCHSupport_FOUND FALSE)
ENDIF(WIN32)
ENDIF(CMAKE_COMPILER_IS_GNUCXX)
MACRO(_PCH_GET_COMPILE_FLAGS _out_compile_flags)
STRING(TOUPPER "CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE}" _flags_var_name)
SET(${_out_compile_flags} ${${_flags_var_name}} )
IF(CMAKE_COMPILER_IS_GNUCXX)
GET_TARGET_PROPERTY(_targetType ${_PCH_current_target} TYPE)
IF(${_targetType} STREQUAL SHARED_LIBRARY)
LIST(APPEND ${_out_compile_flags} "${${_out_compile_flags}} -fPIC")
ENDIF(${_targetType} STREQUAL SHARED_LIBRARY)
ELSE(CMAKE_COMPILER_IS_GNUCXX)
## TODO ... ? or does it work out of the box
ENDIF(CMAKE_COMPILER_IS_GNUCXX)
GET_DIRECTORY_PROPERTY(DIRINC INCLUDE_DIRECTORIES )
FOREACH(item ${DIRINC})
LIST(APPEND ${_out_compile_flags} "${_PCH_include_prefix}${item}")
ENDFOREACH(item)
GET_DIRECTORY_PROPERTY(_directory_flags DEFINITIONS)
#MESSAGE("_directory_flags ${_directory_flags}" )
LIST(APPEND ${_out_compile_flags} ${_directory_flags})
LIST(APPEND ${_out_compile_flags} ${CMAKE_CXX_FLAGS} )
SEPARATE_ARGUMENTS(${_out_compile_flags})
ENDMACRO(_PCH_GET_COMPILE_FLAGS)
MACRO(_PCH_WRITE_PCHDEP_CXX _targetName _include_file _dephelp)
SET(${_dephelp} ${CMAKE_CURRENT_BINARY_DIR}/${_targetName}_pch_dephelp.cxx)
FILE(WRITE ${${_dephelp}}
"#include \"${_include_file}\"
int testfunction()
{
return 0;
}
"
)
ENDMACRO(_PCH_WRITE_PCHDEP_CXX )
MACRO(_PCH_GET_COMPILE_COMMAND out_command _input _output)
FILE(TO_NATIVE_PATH ${_input} _native_input)
FILE(TO_NATIVE_PATH ${_output} _native_output)
IF(CMAKE_COMPILER_IS_GNUCXX)
IF(CMAKE_CXX_COMPILER_ARG1)
# remove leading space in compiler argument
STRING(REGEX REPLACE "^ +" "" pchsupport_compiler_cxx_arg1 ${CMAKE_CXX_COMPILER_ARG1})
SET(${out_command}
${CMAKE_CXX_COMPILER} ${pchsupport_compiler_cxx_arg1} ${_compile_FLAGS} -x c++-header -o ${_output} ${_input}
)
ELSE(CMAKE_CXX_COMPILER_ARG1)
SET(${out_command}
${CMAKE_CXX_COMPILER} ${_compile_FLAGS} -x c++-header -o ${_output} ${_input}
)
ENDIF(CMAKE_CXX_COMPILER_ARG1)
ELSE(CMAKE_COMPILER_IS_GNUCXX)
SET(_dummy_str "#include <${_input}>")
FILE(WRITE ${CMAKE_CURRENT_BINARY_DIR}/pch_dummy.cpp ${_dummy_str})
SET(${out_command}
${CMAKE_CXX_COMPILER} ${_compile_FLAGS} /c /Fp${_native_output} /Yc${_native_input} pch_dummy.cpp
)
#/out:${_output}
ENDIF(CMAKE_COMPILER_IS_GNUCXX)
ENDMACRO(_PCH_GET_COMPILE_COMMAND )
MACRO(_PCH_GET_TARGET_COMPILE_FLAGS _cflags _header_name _pch_path _dowarn )
FILE(TO_NATIVE_PATH ${_pch_path} _native_pch_path)
IF(CMAKE_COMPILER_IS_GNUCXX)
# for use with distcc and gcc >4.0.1 if preprocessed files are accessible
# on all remote machines set
# PCH_ADDITIONAL_COMPILER_FLAGS to -fpch-preprocess
# if you want warnings for invalid header files (which is very inconvenient
# if you have different versions of the headers for different build types
# you may set _pch_dowarn
IF (_dowarn)
SET(${_cflags} "${PCH_ADDITIONAL_COMPILER_FLAGS} -include ${CMAKE_CURRENT_BINARY_DIR}/${_header_name} -Winvalid-pch " )
ELSE (_dowarn)
SET(${_cflags} "${PCH_ADDITIONAL_COMPILER_FLAGS} -include ${CMAKE_CURRENT_BINARY_DIR}/${_header_name} " )
ENDIF (_dowarn)
ELSE(CMAKE_COMPILER_IS_GNUCXX)
set(${_cflags} "/Fp${_native_pch_path} /Yu${_header_name}" )
ENDIF(CMAKE_COMPILER_IS_GNUCXX)
ENDMACRO(_PCH_GET_TARGET_COMPILE_FLAGS )
MACRO(GET_PRECOMPILED_HEADER_OUTPUT _targetName _input _output)
GET_FILENAME_COMPONENT(_name ${_input} NAME)
GET_FILENAME_COMPONENT(_path ${_input} PATH)
SET(_output "${CMAKE_CURRENT_BINARY_DIR}/${_name}.gch/${_targetName}_${CMAKE_BUILD_TYPE}.h++")
ENDMACRO(GET_PRECOMPILED_HEADER_OUTPUT _targetName _input)
MACRO(ADD_PRECOMPILED_HEADER_TO_TARGET _targetName _input _pch_output_to_use )
# to do: test whether compiler flags match between target _targetName
# and _pch_output_to_use
GET_FILENAME_COMPONENT(_name ${_input} NAME)
IF( "${ARGN}" STREQUAL "0")
SET(_dowarn 0)
ELSE( "${ARGN}" STREQUAL "0")
SET(_dowarn 1)
ENDIF("${ARGN}" STREQUAL "0")
_PCH_GET_TARGET_COMPILE_FLAGS(_target_cflags ${_name} ${_pch_output_to_use} ${_dowarn})
# MESSAGE("Add flags ${_target_cflags} to ${_targetName} " )
SET_TARGET_PROPERTIES(${_targetName}
PROPERTIES
COMPILE_FLAGS ${_target_cflags}
)
ADD_CUSTOM_TARGET(pch_Generate_${_targetName}
DEPENDS ${_pch_output_to_use}
)
ADD_DEPENDENCIES(${_targetName} pch_Generate_${_targetName} )
ENDMACRO(ADD_PRECOMPILED_HEADER_TO_TARGET)
MACRO(ADD_PRECOMPILED_HEADER _targetName _input)
SET(_PCH_current_target ${_targetName})
IF(NOT CMAKE_BUILD_TYPE)
MESSAGE(FATAL_ERROR
"This is the ADD_PRECOMPILED_HEADER macro. "
"You must set CMAKE_BUILD_TYPE!"
)
ENDIF(NOT CMAKE_BUILD_TYPE)
IF( "${ARGN}" STREQUAL "0")
SET(_dowarn 0)
ELSE( "${ARGN}" STREQUAL "0")
SET(_dowarn 1)
ENDIF("${ARGN}" STREQUAL "0")
GET_FILENAME_COMPONENT(_name ${_input} NAME)
GET_FILENAME_COMPONENT(_path ${_input} PATH)
GET_PRECOMPILED_HEADER_OUTPUT( ${_targetName} ${_input} _output)
GET_FILENAME_COMPONENT(_outdir ${_output} PATH )
GET_TARGET_PROPERTY(_targetType ${_PCH_current_target} TYPE)
_PCH_WRITE_PCHDEP_CXX(${_targetName} ${_input} _pch_dephelp_cxx)
IF(${_targetType} STREQUAL SHARED_LIBRARY)
ADD_LIBRARY(${_targetName}_pch_dephelp SHARED ${_pch_dephelp_cxx} )
ELSE(${_targetType} STREQUAL SHARED_LIBRARY)
ADD_LIBRARY(${_targetName}_pch_dephelp STATIC ${_pch_dephelp_cxx})
ENDIF(${_targetType} STREQUAL SHARED_LIBRARY)
FILE(MAKE_DIRECTORY ${_outdir})
_PCH_GET_COMPILE_FLAGS(_compile_FLAGS)
#MESSAGE("_compile_FLAGS: ${_compile_FLAGS}")
#message("COMMAND ${CMAKE_CXX_COMPILER} ${_compile_FLAGS} -x c++-header -o ${_output} ${_input}")
SET_SOURCE_FILES_PROPERTIES(${CMAKE_CURRENT_BINARY_DIR}/${_name} PROPERTIES GENERATED 1)
ADD_CUSTOM_COMMAND(
OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${_name}
COMMAND ${CMAKE_COMMAND} -E copy ${_input} ${CMAKE_CURRENT_BINARY_DIR}/${_name} # ensure same directory! Required by gcc
DEPENDS ${_input}
)
#message("_command ${_input} ${_output}")
_PCH_GET_COMPILE_COMMAND(_command ${CMAKE_CURRENT_BINARY_DIR}/${_name} ${_output} )
#message(${_input} )
#message("_output ${_output}")
ADD_CUSTOM_COMMAND(
OUTPUT ${_output}
COMMAND ${_command}
DEPENDS ${_input} ${CMAKE_CURRENT_BINARY_DIR}/${_name} ${_targetName}_pch_dephelp
)
ADD_PRECOMPILED_HEADER_TO_TARGET(${_targetName} ${_input} ${_output} ${_dowarn})
ENDMACRO(ADD_PRECOMPILED_HEADER)
# Generates the use of precompiled in a target,
# without using depency targets (2 extra for each target)
# Using Visual, must also add ${_targetName}_pch to sources
# Not needed by Xcode
MACRO(GET_NATIVE_PRECOMPILED_HEADER _targetName _input)
if(CMAKE_GENERATOR MATCHES Visual*)
SET(_dummy_str "#include \"${_input}\"\n"
"// This is required to suppress LNK4221. Very annoying.\n"
"void *g_${_targetName}Dummy = 0\;\n")
# Use of cxx extension for generated files (as Qt does)
SET(${_targetName}_pch ${CMAKE_CURRENT_BINARY_DIR}/${_targetName}_pch.cxx)
if(EXISTS ${${_targetName}_pch})
# Check if contents is the same, if not rewrite
# todo
else(EXISTS ${${_targetName}_pch})
FILE(WRITE ${${_targetName}_pch} ${_dummy_str})
endif(EXISTS ${${_targetName}_pch})
endif(CMAKE_GENERATOR MATCHES Visual*)
ENDMACRO(GET_NATIVE_PRECOMPILED_HEADER)
MACRO(ADD_NATIVE_PRECOMPILED_HEADER _targetName _input)
IF( "${ARGN}" STREQUAL "0")
SET(_dowarn 0)
ELSE( "${ARGN}" STREQUAL "0")
SET(_dowarn 1)
ENDIF("${ARGN}" STREQUAL "0")
if(CMAKE_GENERATOR MATCHES Visual*)
# Auto include the precompile (useful for moc processing, since the use of
# precompiled is specified at the target level
# and I don't want to specifiy /F- for each moc/res/ui generated files (using Qt)
GET_TARGET_PROPERTY(oldProps ${_targetName} COMPILE_FLAGS)
if (${oldProps} MATCHES NOTFOUND)
SET(oldProps "")
endif(${oldProps} MATCHES NOTFOUND)
SET(newProperties "${oldProps} /Yu\"${_input}\" /FI\"${_input}\"")
SET_TARGET_PROPERTIES(${_targetName} PROPERTIES COMPILE_FLAGS "${newProperties}")
#also inlude ${oldProps} to have the same compile options
SET_SOURCE_FILES_PROPERTIES(${${_targetName}_pch} PROPERTIES COMPILE_FLAGS "${oldProps} /Yc\"${_input}\"")
else(CMAKE_GENERATOR MATCHES Visual*)
if (CMAKE_GENERATOR MATCHES Xcode)
# For Xcode, cmake needs my patch to process
# GCC_PREFIX_HEADER and GCC_PRECOMPILE_PREFIX_HEADER as target properties
GET_TARGET_PROPERTY(oldProps ${_targetName} COMPILE_FLAGS)
if (${oldProps} MATCHES NOTFOUND)
SET(oldProps "")
endif(${oldProps} MATCHES NOTFOUND)
# When buiding out of the tree, precompiled may not be located
# Use full path instead.
GET_FILENAME_COMPONENT(fullPath ${_input} ABSOLUTE)
SET_TARGET_PROPERTIES(${_targetName} PROPERTIES XCODE_ATTRIBUTE_GCC_PREFIX_HEADER "${fullPath}")
SET_TARGET_PROPERTIES(${_targetName} PROPERTIES XCODE_ATTRIBUTE_GCC_PRECOMPILE_PREFIX_HEADER "YES")
else (CMAKE_GENERATOR MATCHES Xcode)
#Fallback to the "old" precompiled suppport
#ADD_PRECOMPILED_HEADER(${_targetName} ${_input} ${_dowarn})
endif(CMAKE_GENERATOR MATCHES Xcode)
endif(CMAKE_GENERATOR MATCHES Visual*)
ENDMACRO(ADD_NATIVE_PRECOMPILED_HEADER)