hare.scd (10128B)
1 hare(1) 2 3 # NAME 4 5 hare - compiles, runs, and tests Hare programs 6 7 # SYNOPSIS 8 9 *hare* build [-cv]++ 10 [-D _ident[:type]=value_]++ 11 [-j _jobs_]++ 12 [-L libdir]++ 13 [-l _name_]++ 14 [-o _path_]++ 15 [-t _arch_]++ 16 [-T _tags_] [-X _tags_]++ 17 [_path_] 18 19 *hare* deps [-Mm] [-T _tags_] [-X _tags_] _path_ 20 21 *hare* run [-v]++ 22 [-D _ident[:type]=value_]++ 23 [-l _name_]++ 24 [-L libdir]++ 25 [-j _jobs_]++ 26 [-T _tags_] [-X _tags_]++ 27 [_path_] [_args_...] 28 29 *hare* test [-v]++ 30 [-D _ident[:type]=value_]++ 31 [-l _name_]++ 32 [-L libdir]++ 33 [-j _jobs_]++ 34 [-T _tags_] [-X _tags_]++ 35 _tests_ 36 37 *hare* version [-v] 38 39 # DESCRIPTION 40 41 ; TODO: Decide on and document driver exit statuses 42 *hare build* compiles a Hare program into an executable. The _path_ argument is 43 a path to a Hare source file or a directory which contains a Hare module (see 44 *MODULES* below). If no path is given, the Hare module contained in the current 45 working directory is built. 46 47 *hare deps* queries the dependencies graph of a Hare program. The _path_ argument 48 is equivalent in usage to *hare build*. 49 50 *hare run* compiles and runs a Hare program. The _path_ argument is equivalent 51 in usage to *hare build*. If provided, any additional _args_ are passed to the 52 Hare program which is run. os::args[0] is set to the _path_ argument. 53 54 *hare test* compiles and runs tests for Hare code. All Hare modules in the 55 current working directory are recursively discovered, built, and their tests 56 made eligible for the test run. If the _tests_ argument is omitted, all tests 57 are run. Otherwise, each argument is interpreted as a *glob*(7) pattern, giving 58 the names of the tests that should be run. *hare test* adds the +test tag to the 59 default build tags. 60 61 *hare version* prints version information for the *hare* program. If *-v* is 62 supplied, it also prints information about the build parameters. The output 63 format is consistent for machine reading: the first line is always "Hare version 64 $version". Subsequent lines give configuration values in the form of a name, 65 value, and optional context, separated by tabs. 66 67 # OPTIONS 68 69 ## hare build 70 71 *-c* 72 Compile only, do not link. The output is an object file (for Hare-only 73 modules) or archive (for mixed source modules). 74 75 *-v* 76 Enable verbose logging. Prints every command to stderr before executing 77 it. 78 79 *-D* _ident[:type]=value_ 80 Passed to *harec*(1) to define a constant in the type system. _ident_ is 81 parsed as a Hare identifier (e.g. "foo::bar::baz"), _type_ as a Hare 82 type (e.g. "str" or "struct { x: int, y: int }"), and _value_ as a Hare 83 expression (e.g. "42"). Take care to address any necessary escaping to 84 avoid conflicts between your shell syntax and Hare syntax. 85 86 *-j* _jobs_ 87 Defines the maximum number of jobs which *hare* will execute in 88 parallel. The default is the number of processors available on the host. 89 90 *-l* _name_ 91 Link with the named system library. The name is passed to 92 *pkg-config --libs* (see *pkg-config*(1)) to obtain the appropriate 93 linker flags. 94 95 *-L libdir* 96 Add directory to the linker library search path. 97 98 *-o* _path_ 99 Set the output file to the given path. 100 101 *-t* _arch_ 102 Set the desired architecture for cross-compiling. See *ARCHITECTURES* 103 for supported architecture names. 104 105 *-T* _tags_ 106 Adds additional build tags. See *CUSTOMIZING BUILD TAGS*. 107 108 *-X* _tags_ 109 Unsets build tags. See *CUSTOMIZING BUILD TAGS*. 110 111 ## hare deps 112 113 *-d* 114 Print dependency graph as a dot file for use with *graphviz*(1). 115 116 *-M* 117 Print rules compatible with POSIX *make*(1). 118 119 *-T* _tags_ 120 Adds additional build tags. See *CUSTOMIZING BUILD TAGS*. 121 122 *-X* _tags_ 123 Unsets build tags. See *CUSTOMIZING BUILD TAGS*. 124 125 ## hare run 126 127 *-v* 128 Enable verbose logging. Prints every command to stderr before executing 129 it. 130 131 *-D* _ident[:type]=value_ 132 Passed to *harec*(1) to define a constant in the type system. _ident_ is 133 parsed as a Hare identifier (e.g. "foo::bar::baz"), _type_ as a Hare 134 type (e.g. "str" or "struct { x: int, y: int }"), and _value_ as a Hare 135 expression (e.g. "42"). Take care to address any necessary escaping to 136 avoid conflicts between your shell syntax and Hare syntax. 137 138 *-j* _jobs_ 139 Defines the maximum number of jobs which *hare* will execute in 140 parallel. The default is the number of processors available on the host. 141 142 *-l* _name_ 143 Link with the named system library. The name is passed to 144 *pkg-config --libs* (see *pkg-config*(1)) to obtain the appropriate 145 linker flags. 146 147 *-L libdir* 148 Add directory to the linker library search path. 149 150 *-T* _tags_ 151 Adds additional build tags. See *CUSTOMIZING BUILD TAGS*. 152 153 *-X* _tags_ 154 Unsets build tags. See *CUSTOMIZING BUILD TAGS*. 155 156 ## hare test 157 158 *-v* 159 Enable verbose logging. Prints every command to stderr before executing 160 it. 161 162 *-D* _ident[:type]=value_ 163 Passed to *harec*(1) to define a constant in the type system. _ident_ is 164 parsed as a Hare identifier (e.g. "foo::bar::baz"), _type_ as a Hare 165 type (e.g. "str" or "struct { x: int, y: int }"), and _value_ as a Hare 166 expression (e.g. "42"). Take care to address any necessary escaping to 167 avoid conflicts between your shell syntax and Hare syntax. 168 169 *-j* _jobs_ 170 Defines the maximum number of jobs which *hare* will execute in 171 parallel. The default is the number of processors available on the host. 172 173 *-l* _name_ 174 Link with the named system library. The name is passed to 175 *pkg-config --libs* (see *pkg-config*(1)) to obtain the appropriate 176 linker flags. 177 178 *-L libdir* 179 Add directory to the linker library search path. 180 181 *-T* _tags_ 182 Adds additional build tags. See *CUSTOMIZING BUILD TAGS*. 183 184 *-X* _tags_ 185 Unsets build tags. See *CUSTOMIZING BUILD TAGS*. 186 187 ## hare version 188 189 *-v* 190 Show build parameters. 191 192 # MODULES 193 194 The _path_ argument to *hare build* and *hare run* are used to identify the 195 inputs for the build. If this path is a file, it is treated as a single Hare 196 source file. If it is a directory, the directory is treated as a module, and is 197 placed in the global namespace for the build. 198 199 All files which end in *.ha* and *.s* are treated as inputs to the module, and 200 are respectively treated as Hare sources and assembly sources. A module with a 201 mix of assembly and Hare sources are considered *mixed* modules, and have some 202 special semantics. 203 204 The list of files considered eligible may be filtered by build tags. The format 205 for the filename is _name_[+_tags_]._ext_, where the _name_ is user-defined, the 206 _ext_ is either 'ha' or 's', and a list of tags are provided after the name. A 207 plus symbol ('+') will cause a file to be included only if that tag is present, 208 and a minus symbol ('-') will cause a file to be excluded if that tag is 209 present. Only one file for a given _name_ will be selected for the build, and 210 among files with eligible tags, the one with the most tag specifiers is 211 selected. 212 213 For example, if the following files are present in a directory: 214 215 - foo.ha 216 - bar.ha 217 - bar+linux.ha 218 - bar+plan9.ha 219 - baz+x86_64.s 220 - bat-x86_64.ha 221 222 If the build tags are +linux+x86_64, then the files which are included in the 223 module are foo.ha, bar+linux.ha, and baz+x86_64.s. 224 225 Additionally, subdirectories in a module will be considered part of that module 226 if their name consists *only* of a tag set, e.g. "+linux" or "-x86_64". A 227 directory with a name *and* tag set is never considered as part of any module, 228 such as "example+linux". A directory with only a name (e.g. "example") is 229 considered a sub-module of its parent directory and must be imported separately, 230 so "foo::bar" refers to foo/bar/. 231 232 # DEPENDENCY RESOLUTION 233 234 The "use" statements in each source file which is used as an input to *hare 235 build* or *hare run* are scanned and used to determine the dependencies for the 236 program, and this process is repeated for each dependency to obtain a complete 237 dependency graph. 238 239 Dependencies are searched for by examining first the current working directory, 240 then each component of the *HAREPATH* environment variable in order, which is a 241 list of paths separated by colons. The default value of the *HAREPATH* may be 242 found with the *hare version -v* command. Typically, it is set to include the 243 path to the standard library installed on the system, as well as a 244 system-provided storage location for third-party modules installed via the 245 system package manager. 246 247 # ARCHITECTURES 248 249 The *-t* flag for *hare build* is used for cross-compilation, and selects a 250 architecture different from the host to target. The list of supported 251 architectures is: 252 253 - aarch64 254 - riscv64 255 - x86_64 256 257 The system usually provides reasonable defaults for the *AR*, *AS*, and *LD* 258 tools based on the desired target. However, you may wish to set these variables 259 yourself to control the cross toolchain in use. 260 ; TODO: sysroots 261 262 # CUSTOMIZING BUILD TAGS 263 264 Build tags allow you to add constraints on what features or platforms are 265 enabled for your build. A tag is a name, consisting of alphanumeric characters 266 and underscores, and a + or - prefix to signal inclusivity or exclusivity. See 267 *MODULES* for details on how build tags affect module input selection. 268 269 To add new tag constraints, inclusive or exclusive, use the *-T* flag. "-T 270 +foo-bar" will include the 'foo' tag and exclude the 'bar' tag. To remove 271 constraints, use the *-X* in a similar fashion; "-X +foo-bar" will reverse the 272 previous *-T* example. 273 274 Some tags are enabled by default, enabling features for the host platform. You 275 can view the default tagset by running *hare version -v*. To remove all default 276 tags, use "-X^". 277 278 # ENVIRONMENT 279 280 The following environment variables affect *hare*'s execution: 281 282 |[ *HARECACHE* 283 :< The path to the object cache. Defaults to _$XDG_CACHE_HOME/hare_, or 284 _~/.cache/hare_ if that doesn't exist. 285 | *HAREPATH* 286 : See *DEPENDENCY RESOLUTION*. 287 | *HAREFLAGS* 288 : Applies additional flags to the command line arguments. 289 | *HAREC* 290 : Name of the *harec*(1) command to use. 291 | *AR* 292 : Name of the *ar*(1) command to use. 293 | *ARFLAGS* 294 : Additional flags to pass to *ar*(1). 295 | *AS* 296 : Name of the *as*(1) command to use. 297 | *ASFLAGS* 298 : Additional flags to pass to *as*(1). 299 | *LD* 300 : Name of the *ld*(1) command to use. 301 | *LDLINKFLAGS* 302 : Additional flags to pass to *ld*(1). 303 304 # SEE ALSO 305 306 *harec*(1), *haredoc*(1), *as*(1), *ld*(1), *ar*(1), *make*(1)