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
|
# Find the native LLVM includes and libraries
#
# Defines the following variables
# LLVM_INCLUDE_DIRS - where to find llvm include files
# LLVM_LIBRARY_DIRS - where to find llvm libs
# LLVM_CFLAGS - llvm compiler flags
# LLVM_LFLAGS - llvm linker flags
# LLVM_MODULE_LIBS - list of llvm libs for working with modules.
# LLVM_INSTALL_PREFIX - LLVM installation prefix
# LLVM_FOUND - True if llvm found.
# LLVM_VERSION - Version string ("llvm-config --version")
#
# This module reads hints about search locations from variables
# LLVM_ROOT - Preferred LLVM installation prefix (containing bin/, lib/, ...)
#
# Note: One may specify these as environment variables if they are not specified as
# CMake variables or cache entries.
#=============================================================================
# SPDX-FileCopyrightText: 2014 Kevin Funk <kfunk@kde.org>
# SPDX-FileCopyrightText: 2024 Shivan Kunwar <shivam.kunwar@kdab.com>
#
# SPDX-License-Identifier: BSD-2-Clause
#=============================================================================
if (NOT LLVM_ROOT AND DEFINED ENV{LLVM_ROOT})
file(TO_CMAKE_PATH "$ENV{LLVM_ROOT}" LLVM_ROOT)
endif()
# if the user specified LLVM_ROOT, use that and fail otherwise
if (LLVM_ROOT)
find_program(LLVM_CONFIG_EXECUTABLE NAMES llvm-config HINTS ${LLVM_ROOT}/bin DOC "llvm-config executable" NO_DEFAULT_PATH)
else()
# find llvm-config, prefer the one with a version suffix, e.g. llvm-config-14
string(REPLACE "." "" LLVM_FIND_VERSION_CONCAT ${LLVM_FIND_VERSION})
find_program(LLVM_CONFIG_EXECUTABLE NAMES llvm-config-${LLVM_FIND_VERSION} llvm-config${LLVM_FIND_VERSION_CONCAT} llvm-config-14 llvm-config-15 llvm-config-16 llvm-config-17 llvm-config-18 llvm-config-19 llvm-config DOC "llvm-config executable")
if (NOT LLVM_CONFIG_EXECUTABLE)
find_program(_llvmNmExecutable llvm-nm)
if (_llvmNmExecutable)
execute_process(COMMAND ${_llvmNmExecutable} --version OUTPUT_VARIABLE _out)
string(REGEX REPLACE ".*LLVM version ([^ \n]+).*" "\\1" _versionString "${_out}")
find_program(LLVM_CONFIG_EXECUTABLE NAMES llvm-config-${_versionString} DOC "llvm-config executable")
endif()
endif()
endif()
set(LLVM_FOUND FALSE)
if (LLVM_CONFIG_EXECUTABLE)
# verify that we've found the correct version of llvm-config
execute_process(COMMAND ${LLVM_CONFIG_EXECUTABLE} --version
OUTPUT_VARIABLE LLVM_VERSION
OUTPUT_STRIP_TRAILING_WHITESPACE)
if (NOT LLVM_VERSION)
set(_LLVM_ERROR_MESSAGE "Failed to parse version from llvm-config")
elseif (LLVM_VERSION VERSION_LESS "19.0")
set(_LLVM_ERROR_MESSAGE "LLVM version too old: ${LLVM_VERSION}")
else()
set(LLVM_FOUND TRUE)
endif()
else()
set(_LLVM_ERROR_MESSAGE "Could NOT find 'llvm-config' executable")
endif()
if (LLVM_FOUND)
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --includedir
OUTPUT_VARIABLE LLVM_INCLUDE_DIRS
OUTPUT_STRIP_TRAILING_WHITESPACE
)
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --libdir
OUTPUT_VARIABLE LLVM_LIBRARY_DIRS
OUTPUT_STRIP_TRAILING_WHITESPACE
)
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --cppflags
OUTPUT_VARIABLE LLVM_CFLAGS
OUTPUT_STRIP_TRAILING_WHITESPACE
)
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --ldflags
OUTPUT_VARIABLE LLVM_LFLAGS
OUTPUT_STRIP_TRAILING_WHITESPACE
)
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --libs core bitreader asmparser analysis
OUTPUT_VARIABLE LLVM_MODULE_LIBS
OUTPUT_STRIP_TRAILING_WHITESPACE
)
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --libfiles
OUTPUT_VARIABLE LLVM_LIBS
OUTPUT_STRIP_TRAILING_WHITESPACE
)
string(REPLACE " " ";" LLVM_LIBS ${LLVM_LIBS})
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --system-libs
OUTPUT_VARIABLE LLVM_SYSTEM_LIBS
OUTPUT_STRIP_TRAILING_WHITESPACE
)
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --prefix
OUTPUT_VARIABLE LLVM_INSTALL_PREFIX
OUTPUT_STRIP_TRAILING_WHITESPACE
)
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --bindir
OUTPUT_VARIABLE LLVM_BIN_DIR
OUTPUT_STRIP_TRAILING_WHITESPACE
)
set(CLANG_EXECUTABLE_PATH "${LLVM_BIN_DIR}/clang")
if(EXISTS ${CLANG_EXECUTABLE_PATH})
message(STATUS "Clang found: ${CLANG_EXECUTABLE_PATH}")
set(CLANG_EXECUTABLE ${CLANG_EXECUTABLE_PATH})
else()
message(WARNING "Clang not found in LLVM bin directory: ${LLVM_BIN_DIR}")
endif()
# potentially add include dir from binary dir for non-installed LLVM
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --includedir
OUTPUT_VARIABLE _llvmSourceRoot
OUTPUT_STRIP_TRAILING_WHITESPACE
)
string(FIND "${LLVM_INCLUDE_DIRS}" "${_llvmSourceRoot}" _llvmIsInstalled)
if (NOT _llvmIsInstalled)
list(APPEND LLVM_INCLUDE_DIRS "${LLVM_INSTALL_PREFIX}/include")
endif()
# LLVM 19 specific handling
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --libs all
OUTPUT_VARIABLE LLVM_LIBS_19
OUTPUT_STRIP_TRAILING_WHITESPACE
)
string(REPLACE " " ";" LLVM_LIBS_19 ${LLVM_LIBS_19})
list(APPEND LLVM_LIBS ${LLVM_LIBS_19})
endif()
if (LLVM_FIND_REQUIRED AND NOT LLVM_FOUND)
message(FATAL_ERROR "Could not find LLVM: ${_LLVM_ERROR_MESSAGE}")
elseif(_LLVM_ERROR_MESSAGE)
message(STATUS "Could not find LLVM: ${_LLVM_ERROR_MESSAGE}")
endif()
if (LLVM_FOUND)
message(STATUS "Found LLVM (version: ${LLVM_VERSION}): (using ${LLVM_CONFIG_EXECUTABLE})")
message(STATUS " Include dirs: ${LLVM_INCLUDE_DIRS}")
message(STATUS " LLVM libraries: ${LLVM_LIBS}")
message(STATUS " LLVM System libraries: ${LLVM_SYSTEM_LIBS}")
endif()
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --cxxflags
OUTPUT_VARIABLE LLVM_DEFINITIONS
OUTPUT_STRIP_TRAILING_WHITESPACE
)
string(REGEX REPLACE "[ \t]+" ";" LLVM_DEFINITIONS "${LLVM_DEFINITIONS}")
if(LLVM_FIND_COMPONENTS)
foreach(component ${LLVM_FIND_COMPONENTS})
string(TOUPPER ${component} component_upcase)
set(LLVM_${component_upcase}_FOUND TRUE)
set(LLVM_${component_upcase}_LIBRARY ${component})
endforeach()
endif()
if (LLVM_VERSION VERSION_GREATER_EQUAL "14.0")
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --has-rtti
OUTPUT_VARIABLE LLVM_HAS_RTTI
OUTPUT_STRIP_TRAILING_WHITESPACE
)
if (LLVM_HAS_RTTI)
message(STATUS " LLVM built with RTTI: ${LLVM_HAS_RTTI}")
endif()
endif()
set(LLVM_VERSION "${LLVM_VERSION}" CACHE STRING "LLVM version")
mark_as_advanced(LLVM_INCLUDE_DIRS LLVM_LIBRARY_DIRS LLVM_CFLAGS LLVM_LFLAGS LLVM_MODULE_LIBS LLVM_LIBS LLVM_DEFINITIONS)
|
