Colin Cross | 22a72b0 | 2021-06-03 16:59:57 -0700 | [diff] [blame] | 1 | // Build musl libc from source to eventually use as the libc for host modules in the platform build. |
| 2 | // The list of sources to compile for each library is loaded from sources.bp, which is generated |
| 3 | // by generate_bp.py. |
| 4 | |
| 5 | package { |
| 6 | default_visibility: ["//visibility:private"], |
| 7 | default_applicable_licenses: ["musl_license"], |
| 8 | } |
| 9 | |
| 10 | license { |
| 11 | name: "musl_license", |
| 12 | visibility: [":__subpackages__"], |
| 13 | license_kinds: [ |
| 14 | "SPDX-license-identifier-MIT", |
| 15 | "SPDX-license-identifier-BSD", |
| 16 | ], |
| 17 | license_text: ["COPYRIGHT"], |
| 18 | } |
| 19 | |
| 20 | cc_library_headers { |
| 21 | name: "libc_musl_arch_headers", |
| 22 | host_supported: true, |
| 23 | device_supported: false, |
| 24 | system_shared_libs: [], |
| 25 | generated_headers: [ |
| 26 | "libc_musl_alltypes.h", |
| 27 | "libc_musl_syscall.h", |
| 28 | ], |
| 29 | export_generated_headers: [ |
| 30 | "libc_musl_alltypes.h", |
| 31 | "libc_musl_syscall.h", |
| 32 | ], |
| 33 | export_include_dirs: [ |
| 34 | "arch/generic", |
| 35 | ], |
| 36 | arch: { |
| 37 | arm: { |
| 38 | export_include_dirs: ["arch/arm"], |
| 39 | }, |
| 40 | arm64: { |
| 41 | export_include_dirs: ["arch/aarch64"], |
| 42 | }, |
| 43 | x86: { |
| 44 | export_include_dirs: ["arch/i386"], |
| 45 | }, |
| 46 | x86_64: { |
| 47 | export_include_dirs: ["arch/x86_64"], |
| 48 | }, |
| 49 | }, |
| 50 | } |
| 51 | |
| 52 | cc_library_headers { |
| 53 | name: "libc_musl_private_headers", |
| 54 | host_supported: true, |
| 55 | device_supported: false, |
| 56 | system_shared_libs: [], |
| 57 | generated_headers: [ |
| 58 | "libc_musl_version.h", |
| 59 | ], |
| 60 | export_generated_headers: [ |
| 61 | "libc_musl_version.h", |
| 62 | ], |
| 63 | export_include_dirs: [ |
| 64 | "src/include", |
| 65 | "src/internal", |
| 66 | ], |
| 67 | } |
| 68 | |
| 69 | cc_library_headers { |
| 70 | name: "libc_musl_public_headers", |
| 71 | host_supported: true, |
| 72 | device_supported: false, |
| 73 | system_shared_libs: [], |
| 74 | export_system_include_dirs: [ |
Colin Cross | 195a9b3 | 2021-06-29 11:10:42 -0700 | [diff] [blame] | 75 | "android/include", |
Colin Cross | 22a72b0 | 2021-06-03 16:59:57 -0700 | [diff] [blame] | 76 | "include", |
| 77 | ], |
| 78 | } |
| 79 | |
| 80 | cc_defaults { |
| 81 | name: "libc_musl_defaults", |
| 82 | host_supported: true, |
| 83 | device_supported: false, |
| 84 | system_shared_libs: [], |
| 85 | cflags: [ |
| 86 | // CFLAGS_C99FSE |
| 87 | "-nostdinc", |
| 88 | "-ffreestanding", |
| 89 | "-frounding-math", |
| 90 | "-Wa,--noexecstack", |
| 91 | |
| 92 | // CFLAGS_AUTO |
| 93 | //"-Os", |
| 94 | "-O0", |
| 95 | "-pipe", |
| 96 | "-fomit-frame-pointer", |
| 97 | "-fno-unwind-tables", |
| 98 | "-fno-asynchronous-unwind-tables", |
| 99 | "-ffunction-sections", |
| 100 | "-fdata-sections", |
| 101 | //"-w", |
| 102 | "-Wno-pointer-to-int-cast", |
| 103 | "-Werror=implicit-function-declaration", |
| 104 | "-Werror=implicit-int", |
| 105 | "-Werror=pointer-sign", |
| 106 | "-Werror=pointer-arith", |
| 107 | "-Werror=int-conversion", |
| 108 | "-Werror=incompatible-pointer-types", |
| 109 | "-Qunused-arguments", |
| 110 | "-Waddress", |
| 111 | "-Warray-bounds", |
| 112 | "-Wchar-subscripts", |
| 113 | "-Wduplicate-decl-specifier", |
| 114 | "-Winit-self", |
| 115 | "-Wreturn-type", |
| 116 | "-Wsequence-point", |
| 117 | "-Wstrict-aliasing", |
| 118 | "-Wunused-function", |
| 119 | "-Wunused-label", |
| 120 | "-Wunused-variable", |
| 121 | |
| 122 | // CFLAGS_ALL |
| 123 | "-D_XOPEN_SOURCE=700", |
| 124 | |
| 125 | // undefine NDEBUG from global flags, musl defines it locally |
| 126 | "-UNDEBUG", |
| 127 | |
| 128 | // disable warnings: |
| 129 | "-Wno-bitwise-op-parentheses", |
| 130 | "-Wno-dangling-else", |
| 131 | "-Wno-ignored-attributes", |
| 132 | "-Wno-logical-op-parentheses", |
| 133 | "-Wno-missing-braces", |
| 134 | "-Wno-missing-field-initializers", |
| 135 | "-Wno-parentheses", |
| 136 | "-Wno-shift-op-parentheses", |
| 137 | "-Wno-string-plus-int", |
| 138 | "-Wno-unused-parameter", |
| 139 | ], |
| 140 | |
| 141 | ldflags: [ |
| 142 | "-Wl,--sort-section,alignment", |
| 143 | "-Wl,--sort-common", |
| 144 | "-Wl,--gc-sections", |
| 145 | "-Wl,--hash-style=both", |
| 146 | "-Wl,--no-undefined", |
| 147 | // Can't use --exclude-libs=ALL, that excludes the static libraries |
| 148 | // used for building subparts of libc_musl. |
| 149 | //"-Wl,--exclude-libs=ALL", |
| 150 | "-Wl,--exclude-libs=libgcc.a", |
| 151 | "-Wl,--exclude-libs=libgcc_stripped.a", |
| 152 | "-Wl,--exclude-libs=libclang_rt.builtins-arm-android.a", |
| 153 | "-Wl,--exclude-libs=libclang_rt.builtins-aarch64-android.a", |
| 154 | "-Wl,--exclude-libs=libclang_rt.builtins-i686-android.a", |
| 155 | "-Wl,--exclude-libs=libclang_rt.builtins-x86_64-android.a", |
| 156 | ], |
| 157 | |
Colin Cross | 827123b | 2022-01-21 22:46:11 -0800 | [diff] [blame] | 158 | asflags: ["-Wno-unused-command-line-argument"], |
| 159 | |
Colin Cross | 22a72b0 | 2021-06-03 16:59:57 -0700 | [diff] [blame] | 160 | header_libs: [ |
| 161 | // The order here is very important, private headers like src/include/features.h override |
| 162 | // public headers like include/features.h, and arch headers like arch/x86_64/ksigaction.h |
| 163 | // override private headers like src/internal/ksigaction.h. |
| 164 | "libc_musl_arch_headers", |
| 165 | "libc_musl_private_headers", |
| 166 | "libc_musl_public_headers", |
| 167 | ], |
| 168 | |
| 169 | stl: "none", |
| 170 | c_std: "c99", |
| 171 | sanitize: { |
| 172 | never: true, |
| 173 | }, |
Colin Cross | d565371 | 2021-08-10 19:47:33 -0700 | [diff] [blame] | 174 | target: { |
| 175 | darwin: { |
| 176 | enabled: false, |
| 177 | }, |
Colin Cross | 47fbb29 | 2021-10-12 17:32:06 -0700 | [diff] [blame] | 178 | bionic: { |
| 179 | enabled: false, |
| 180 | }, |
Colin Cross | 2a1464c | 2021-12-23 08:51:57 -0800 | [diff] [blame] | 181 | glibc: { |
| 182 | enabled: false, |
| 183 | }, |
Colin Cross | d565371 | 2021-08-10 19:47:33 -0700 | [diff] [blame] | 184 | }, |
Colin Cross | 22a72b0 | 2021-06-03 16:59:57 -0700 | [diff] [blame] | 185 | } |
| 186 | |
Colin Cross | 2a1464c | 2021-12-23 08:51:57 -0800 | [diff] [blame] | 187 | cc_library_headers { |
| 188 | name: "libc_musl_headers", |
| 189 | visibility: ["//bionic/libc"], |
| 190 | host_supported: true, |
| 191 | device_supported: false, |
| 192 | system_shared_libs: [], |
| 193 | export_header_lib_headers: [ |
| 194 | "libc_musl_arch_headers", |
| 195 | "libc_musl_public_headers", |
| 196 | "libc_llndk_headers", |
| 197 | ], |
| 198 | header_libs: [ |
| 199 | "libc_musl_arch_headers", |
| 200 | "libc_musl_public_headers", |
| 201 | "libc_llndk_headers", |
| 202 | ], |
| 203 | } |
| 204 | |
Colin Cross | 22a72b0 | 2021-06-03 16:59:57 -0700 | [diff] [blame] | 205 | // |
| 206 | // The main musl libc library |
| 207 | // |
| 208 | |
| 209 | cc_library { |
| 210 | name: "libc_musl", |
| 211 | visibility: ["//visibility:public"], |
Colin Cross | 0c85068 | 2022-01-21 22:47:20 -0800 | [diff] [blame] | 212 | defaults: ["libc_musl_defaults"], |
| 213 | whole_static_libs: ["libc_musl_static"], |
| 214 | shared: { |
| 215 | whole_static_libs: ["libc_musl_ldso"], |
| 216 | }, |
| 217 | ldflags: [ |
| 218 | "-Wl,-e,_dlstart", |
| 219 | "-nostdlib", |
| 220 | ], |
| 221 | dynamic_list: "dynamic.list", |
| 222 | } |
| 223 | |
| 224 | // All the static parts of the main musl libc. Don't use this directly, use |
| 225 | // the version exported through libc_musl instead. |
| 226 | cc_library_static { |
| 227 | name: "libc_musl_static", |
Colin Cross | 22a72b0 | 2021-06-03 16:59:57 -0700 | [diff] [blame] | 228 | defaults: [ |
| 229 | "libc_musl_defaults", |
| 230 | "libc_musl_sources", |
| 231 | ], |
| 232 | whole_static_libs: [ |
| 233 | "libc_musl_opt", |
| 234 | "libc_musl_opt_nossp", |
| 235 | "libc_musl_nossp", |
Colin Cross | 2a1464c | 2021-12-23 08:51:57 -0800 | [diff] [blame] | 236 | "libexecinfo", |
| 237 | "libb64", |
Colin Cross | 22a72b0 | 2021-06-03 16:59:57 -0700 | [diff] [blame] | 238 | ], |
Colin Cross | 22a72b0 | 2021-06-03 16:59:57 -0700 | [diff] [blame] | 239 | multilib: { |
| 240 | lib32: { |
| 241 | whole_static_libs: ["libc_musl_compat32"], |
| 242 | }, |
| 243 | }, |
Colin Cross | 22a72b0 | 2021-06-03 16:59:57 -0700 | [diff] [blame] | 244 | export_header_lib_headers: [ |
| 245 | "libc_musl_arch_headers", |
| 246 | "libc_musl_public_headers", |
| 247 | "libc_llndk_headers", |
| 248 | ], |
| 249 | header_libs: [ |
| 250 | "libc_llndk_headers", |
| 251 | ], |
| 252 | } |
| 253 | |
| 254 | // Musl sources that are compiled with -O3 |
| 255 | cc_library_static { |
| 256 | name: "libc_musl_opt", |
| 257 | defaults: [ |
| 258 | "libc_musl_defaults", |
| 259 | "libc_musl_opt_sources", |
| 260 | ], |
| 261 | cflags: ["-O3"], |
| 262 | } |
| 263 | |
| 264 | // Musl sources that are compiled with -O3 and -fno-stack-protector |
| 265 | cc_library_static { |
| 266 | name: "libc_musl_opt_nossp", |
| 267 | defaults: [ |
| 268 | "libc_musl_defaults", |
| 269 | "libc_musl_opt_nossp_sources", |
| 270 | ], |
| 271 | cflags: [ |
| 272 | "-O3", |
| 273 | "-fno-stack-protector", |
| 274 | ], |
| 275 | } |
| 276 | |
| 277 | // Musl sources that are compiled with -fno-stack-protector |
| 278 | cc_library_static { |
| 279 | name: "libc_musl_nossp", |
| 280 | defaults: [ |
| 281 | "libc_musl_defaults", |
| 282 | "libc_musl_nossp_sources", |
| 283 | ], |
| 284 | cflags: ["-fno-stack-protector"], |
| 285 | } |
| 286 | |
| 287 | // Musl sources for 32-bit architectures |
| 288 | cc_library_static { |
| 289 | name: "libc_musl_compat32", |
| 290 | defaults: [ |
| 291 | "libc_musl_defaults", |
| 292 | "libc_musl_compat32_sources", |
| 293 | ], |
| 294 | } |
| 295 | |
| 296 | // Musl sources for the dynamic linker. |
| 297 | cc_library_static { |
| 298 | name: "libc_musl_ldso", |
| 299 | defaults: [ |
| 300 | "libc_musl_defaults", |
| 301 | "libc_musl_ldso_sources", |
| 302 | ], |
Colin Cross | 109b21b | 2022-01-21 22:42:37 -0800 | [diff] [blame] | 303 | cflags: [ |
| 304 | "-fno-stack-protector", |
| 305 | "-DLIBC_SONAME=libc_musl.so", |
| 306 | ], |
Colin Cross | 22a72b0 | 2021-06-03 16:59:57 -0700 | [diff] [blame] | 307 | } |
| 308 | |
Colin Cross | 0c85068 | 2022-01-21 22:47:20 -0800 | [diff] [blame] | 309 | // Musl sources for the dynamic linker when used in the sysroot. |
| 310 | cc_library_static { |
| 311 | name: "libc_musl_ldso_sysroot", |
| 312 | defaults: [ |
| 313 | "libc_musl_defaults", |
| 314 | "libc_musl_ldso_sources", |
| 315 | ], |
| 316 | cflags: [ |
| 317 | "-fno-stack-protector", |
| 318 | "-DLIBC_SONAME=libc.so", |
| 319 | ], |
| 320 | } |
| 321 | |
Colin Cross | 22a72b0 | 2021-06-03 16:59:57 -0700 | [diff] [blame] | 322 | // An attempt to compile the dynamic linker as a standalone library separate from libc_musl.so. |
| 323 | // Not used yet. |
| 324 | cc_library_shared { |
| 325 | name: "musl_linker", |
| 326 | defaults: [ |
| 327 | "libc_musl_defaults", |
| 328 | ], |
| 329 | nocrt: true, |
| 330 | static_libs: [ |
| 331 | "libc_musl_ldso", |
| 332 | "libc_musl", |
| 333 | ], |
| 334 | ldflags: [ |
| 335 | "-Wl,-e,_dlstart", |
| 336 | "-nostdlib", |
| 337 | "-Wl,--exclude-libs=libc_musl.a", |
| 338 | ], |
| 339 | } |
| 340 | |
| 341 | // Convert the linker (which is actually libc_musl.so) into a .s file for embedding in crtbegin. |
| 342 | cc_genrule { |
| 343 | name: "musl_linker_asm", |
| 344 | host_supported: true, |
| 345 | device_supported: false, |
| 346 | tools: ["extract_linker"], |
| 347 | cmd: "$(location) -s $(out) $(in)", |
| 348 | srcs: [":libc_musl"], |
| 349 | out: ["linker.s"], |
Colin Cross | 47fbb29 | 2021-10-12 17:32:06 -0700 | [diff] [blame] | 350 | target: { |
| 351 | darwin: { |
| 352 | enabled: false, |
| 353 | }, |
| 354 | bionic: { |
| 355 | enabled: false, |
| 356 | }, |
Colin Cross | 2a1464c | 2021-12-23 08:51:57 -0800 | [diff] [blame] | 357 | glibc: { |
| 358 | enabled: false, |
| 359 | }, |
Colin Cross | 47fbb29 | 2021-10-12 17:32:06 -0700 | [diff] [blame] | 360 | }, |
Colin Cross | 22a72b0 | 2021-06-03 16:59:57 -0700 | [diff] [blame] | 361 | } |
| 362 | |
| 363 | // Convert the linker (which is actually libc_musl.so) into a linker script for embedding in |
| 364 | // crtbegin. |
| 365 | cc_genrule { |
| 366 | name: "musl_linker_script", |
| 367 | visibility: ["//visibility:public"], |
| 368 | host_supported: true, |
| 369 | device_supported: false, |
| 370 | tools: ["extract_linker"], |
| 371 | cmd: "$(location) -T $(out) $(in)", |
| 372 | srcs: [":libc_musl"], |
| 373 | out: ["linker.script"], |
Colin Cross | 47fbb29 | 2021-10-12 17:32:06 -0700 | [diff] [blame] | 374 | target: { |
| 375 | darwin: { |
| 376 | enabled: false, |
| 377 | }, |
| 378 | bionic: { |
| 379 | enabled: false, |
| 380 | }, |
Colin Cross | 2a1464c | 2021-12-23 08:51:57 -0800 | [diff] [blame] | 381 | glibc: { |
| 382 | enabled: false, |
| 383 | }, |
Colin Cross | 47fbb29 | 2021-10-12 17:32:06 -0700 | [diff] [blame] | 384 | }, |
Colin Cross | 22a72b0 | 2021-06-03 16:59:57 -0700 | [diff] [blame] | 385 | } |
| 386 | |
| 387 | // |
| 388 | // The musl CRT objects |
| 389 | // |
| 390 | |
| 391 | cc_object { |
| 392 | name: "libc_musl_crt1", |
| 393 | defaults: [ |
| 394 | "libc_musl_defaults", |
| 395 | "libc_musl_crt1_sources", |
| 396 | ], |
| 397 | } |
| 398 | |
| 399 | cc_object { |
| 400 | name: "libc_musl_crti", |
| 401 | defaults: [ |
| 402 | "libc_musl_defaults", |
| 403 | "libc_musl_crti_sources", |
| 404 | ], |
| 405 | } |
| 406 | |
| 407 | cc_object { |
| 408 | name: "libc_musl_crtn", |
| 409 | defaults: [ |
| 410 | "libc_musl_defaults", |
| 411 | "libc_musl_crtn_sources", |
| 412 | ], |
| 413 | } |
| 414 | |
| 415 | cc_object { |
| 416 | name: "libc_musl_rcrt1", |
| 417 | defaults: [ |
| 418 | "libc_musl_defaults", |
| 419 | "libc_musl_rcrt1_sources", |
| 420 | ], |
| 421 | } |
| 422 | |
| 423 | cc_object { |
| 424 | name: "libc_musl_Scrt1", |
| 425 | defaults: [ |
| 426 | "libc_musl_defaults", |
| 427 | "libc_musl_Scrt1_sources", |
| 428 | ], |
| 429 | } |
| 430 | |
| 431 | // |
| 432 | // The custom CRT objects for use in the platform build. |
| 433 | // Embeds the linker into crtbegin_dynamic. |
| 434 | // |
| 435 | |
| 436 | cc_object { |
| 437 | name: "libc_musl_crtbegin_dynamic", |
| 438 | defaults: ["libc_musl_defaults"], |
| 439 | visibility: ["//visibility:public"], |
| 440 | objs: [ |
| 441 | "libc_musl_crt1", |
| 442 | "libc_musl_crti", |
| 443 | "clang_rt.crtbegin", |
| 444 | ], |
| 445 | srcs: [ |
| 446 | ":musl_linker_asm", |
| 447 | "android/ldso_trampoline.cpp", |
| 448 | ], |
| 449 | cflags: [ |
| 450 | // These are required to make sure the C code in ldso_trampoline.c |
| 451 | // doesn't have any dependencies on libc. |
| 452 | "-fno-stack-protector", |
| 453 | "-ftrivial-auto-var-init=uninitialized", |
| 454 | ], |
| 455 | } |
| 456 | |
| 457 | cc_object { |
| 458 | name: "libc_musl_crtbegin_static", |
| 459 | defaults: ["libc_musl_defaults"], |
| 460 | visibility: ["//visibility:public"], |
| 461 | objs: [ |
| 462 | "libc_musl_Scrt1", |
| 463 | "libc_musl_crti", |
| 464 | "clang_rt.crtbegin", |
| 465 | ], |
| 466 | } |
| 467 | |
| 468 | cc_object { |
| 469 | name: "libc_musl_crtend", |
| 470 | defaults: ["libc_musl_defaults"], |
| 471 | visibility: ["//visibility:public"], |
| 472 | objs: [ |
| 473 | "clang_rt.crtend", |
| 474 | "libc_musl_crtn", |
| 475 | ], |
| 476 | } |
| 477 | |
| 478 | cc_object { |
| 479 | name: "libc_musl_crtbegin_so", |
| 480 | defaults: ["libc_musl_defaults"], |
| 481 | visibility: ["//visibility:public"], |
| 482 | objs: [ |
| 483 | "libc_musl_crti", |
| 484 | "clang_rt.crtbegin", |
| 485 | ], |
| 486 | } |
| 487 | |
| 488 | cc_object { |
| 489 | name: "libc_musl_crtend_so", |
| 490 | defaults: ["libc_musl_defaults"], |
| 491 | visibility: ["//visibility:public"], |
| 492 | objs: [ |
| 493 | "clang_rt.crtend", |
| 494 | "libc_musl_crtn", |
| 495 | ], |
| 496 | } |
| 497 | |
| 498 | // |
| 499 | // Tests for the embedded linker trampoline |
| 500 | // |
| 501 | |
| 502 | cc_test_host { |
| 503 | name: "libc_musl_ldso_trampoline_test", |
| 504 | srcs: ["android/ldso_trampoline_test.cpp"], |
| 505 | stl: "libc++", |
Colin Cross | d565371 | 2021-08-10 19:47:33 -0700 | [diff] [blame] | 506 | target: { |
| 507 | darwin: { |
| 508 | enabled: false, |
| 509 | }, |
| 510 | }, |
Colin Cross | 22a72b0 | 2021-06-03 16:59:57 -0700 | [diff] [blame] | 511 | } |
| 512 | |
| 513 | // |
| 514 | // Generated headers |
| 515 | // |
| 516 | |
| 517 | genrule { |
| 518 | name: "libc_musl_version.h", |
| 519 | srcs: ["VERSION"], |
| 520 | out: ["version.h"], |
| 521 | cmd: "printf '#define VERSION \"%s\"\n' \"$$(cat $(location VERSION))\" > $(out)", |
| 522 | } |
| 523 | |
| 524 | // libc_musl_arch_alltypes.h is split out of libc_musl_alltypes.h to ensure the arch-specific |
| 525 | // alltypes.h.in ends up before the generic alltypes.h.in in the output. |
| 526 | cc_genrule { |
| 527 | name: "libc_musl_arch_alltypes.h", |
| 528 | host_supported: true, |
| 529 | device_supported: false, |
| 530 | arch: { |
| 531 | arm: { |
| 532 | srcs: ["arch/arm/bits/alltypes.h.in"], |
| 533 | }, |
| 534 | arm64: { |
| 535 | srcs: ["arch/aarch64/bits/alltypes.h.in"], |
| 536 | }, |
| 537 | x86: { |
| 538 | srcs: ["arch/i386/bits/alltypes.h.in"], |
| 539 | }, |
| 540 | x86_64: { |
| 541 | srcs: ["arch/x86_64/bits/alltypes.h.in"], |
| 542 | }, |
| 543 | }, |
| 544 | tool_files: ["tools/mkalltypes.sed"], |
| 545 | out: ["bits/alltypes.h"], |
| 546 | cmd: "sed -f $(location tools/mkalltypes.sed) $(in) > $(out)", |
| 547 | } |
| 548 | |
| 549 | cc_genrule { |
| 550 | name: "libc_musl_alltypes.h", |
| 551 | host_supported: true, |
| 552 | device_supported: false, |
| 553 | srcs: [ |
| 554 | "include/alltypes.h.in", |
| 555 | ":libc_musl_arch_alltypes.h", |
| 556 | ], |
| 557 | tool_files: ["tools/mkalltypes.sed"], |
| 558 | out: ["bits/alltypes.h"], |
| 559 | cmd: "( " + |
| 560 | "cat $(location :libc_musl_arch_alltypes.h) && " + |
| 561 | "sed -f $(location tools/mkalltypes.sed) $(location include/alltypes.h.in) " + |
| 562 | ") > $(out)", |
| 563 | } |
| 564 | |
| 565 | cc_genrule { |
| 566 | name: "libc_musl_syscall.h", |
| 567 | host_supported: true, |
| 568 | device_supported: false, |
| 569 | arch: { |
| 570 | arm: { |
| 571 | srcs: ["arch/arm/bits/syscall.h.in"], |
| 572 | }, |
| 573 | arm64: { |
| 574 | srcs: ["arch/aarch64/bits/syscall.h.in"], |
| 575 | }, |
| 576 | x86: { |
| 577 | srcs: ["arch/i386/bits/syscall.h.in"], |
| 578 | }, |
| 579 | x86_64: { |
| 580 | srcs: ["arch/x86_64/bits/syscall.h.in"], |
| 581 | }, |
| 582 | }, |
| 583 | out: ["bits/syscall.h"], |
| 584 | cmd: "cp $(in) $(out) && sed -n -e s/__NR_/SYS_/p < $(in) >> $(out)", |
| 585 | } |
| 586 | |
Colin Cross | 0c85068 | 2022-01-21 22:47:20 -0800 | [diff] [blame] | 587 | // |
| 588 | // Rules to generate a sysroot. This isn't used during the build, but can be convenient to run |
| 589 | // configure scripts from external projects to generate necessary files to build against musl. |
| 590 | // |
| 591 | |
| 592 | |
| 593 | // A copy of libc_musl that uses libc.so as its soname for putting in the sysroot. |
| 594 | cc_library_shared { |
| 595 | name: "libc_musl_for_sysroot", |
| 596 | defaults: ["libc_musl_defaults"], |
| 597 | whole_static_libs: ["libc_musl_static"], |
| 598 | shared: { |
| 599 | whole_static_libs: ["libc_musl_ldso_sysroot"], |
| 600 | }, |
| 601 | ldflags: [ |
| 602 | "-Wl,-e,_dlstart", |
| 603 | "-nostdlib", |
| 604 | "-Wl,--soname,libc.so", |
| 605 | ], |
| 606 | dynamic_list: "dynamic.list", |
| 607 | } |
| 608 | |
| 609 | // An empty static library that will be copied to libdl.a, etc. in the sysroot. |
| 610 | // Shouldn't be used by anything else besides the sysroot cc_genrule. |
| 611 | cc_library_static { |
| 612 | name: "libc_musl_sysroot_static_empty", |
| 613 | defaults: [ |
| 614 | "libc_musl_defaults", |
| 615 | ], |
| 616 | } |
| 617 | |
Colin Cross | 44afa75 | 2022-02-10 17:32:43 -0800 | [diff] [blame^] | 618 | // The linker and trampoline compiled as a .o file to use as part of the sysroot |
| 619 | // crt. |
| 620 | cc_object { |
| 621 | name: "libc_musl_linker_object", |
| 622 | defaults: ["libc_musl_defaults"], |
| 623 | srcs: [ |
| 624 | ":musl_linker_asm", |
| 625 | "android/ldso_trampoline.cpp", |
| 626 | ], |
| 627 | cflags: [ |
| 628 | // These are required to make sure the C code in ldso_trampoline.c |
| 629 | // doesn't have any dependencies on libc. |
| 630 | "-fno-stack-protector", |
| 631 | "-ftrivial-auto-var-init=uninitialized", |
| 632 | ], |
| 633 | } |
| 634 | |
Colin Cross | 0c85068 | 2022-01-21 22:47:20 -0800 | [diff] [blame] | 635 | // The architecture-specific bits have to be handled separately because the label varies based |
| 636 | // on architecture, which prevents using $(locations) to find them and requires using $(in) |
| 637 | // instead, which would mix in all the other files if this were part of the main libc_musl_sysroot |
| 638 | // genrule. |
| 639 | cc_genrule { |
| 640 | name: "libc_musl_sysroot_bits", |
| 641 | host_supported: true, |
| 642 | device_supported: false, |
| 643 | arch: { |
| 644 | arm: { |
| 645 | srcs: ["arch/arm/bits/*.h"], |
| 646 | }, |
| 647 | arm64: { |
| 648 | srcs: ["arch/aarch64/bits/*.h"], |
| 649 | }, |
| 650 | x86: { |
| 651 | srcs: ["arch/i386/bits/*.h"], |
| 652 | }, |
| 653 | x86_64: { |
| 654 | srcs: ["arch/x86_64/bits/*.h"], |
| 655 | }, |
| 656 | }, |
| 657 | out: ["libc_musl_sysroot_bits.zip"], |
| 658 | tools: ["soong_zip"], |
| 659 | cmd: "includes=($(in)) && $(location soong_zip) -o $(out) -P include/bits -j -D $$(dirname $${includes[0]})", |
| 660 | } |
| 661 | |
| 662 | genrule { |
| 663 | name: "libc_musl_clang_wrapper", |
| 664 | srcs: ["tools/musl-clang.in"], |
| 665 | out: ["musl-clang"], |
| 666 | cmd: "sed -e 's`@CC@`clang`' -e 's`@PREFIX@`$$(dirname \"$$0\")/..`' -e 's`@INCDIR@`$${libc}/include`' -e 's`@LIBDIR@`$${libc}/lib`' $(in) > $(out) && " + |
| 667 | "chmod a+x $(out)", |
| 668 | } |
| 669 | |
| 670 | genrule { |
| 671 | name: "libc_musl_ld_wrapper", |
| 672 | srcs: ["tools/ld.musl-clang.in"], |
| 673 | out: ["ld.musl-clang"], |
| 674 | cmd: "sed -e 's`@CC@`clang`' -e 's`@LIBDIR@`$$(dirname \"$$0\")/../lib`' -e 's`@LDSO@`$$(dirname \"$$0\")/../lib/ld-musl.so.1`' $(in) > $(out) && " + |
| 675 | "chmod a+x $(out)", |
| 676 | } |
| 677 | |
| 678 | cc_genrule { |
| 679 | name: "libc_musl_sysroot", |
| 680 | host_supported: true, |
| 681 | device_supported: false, |
| 682 | enabled: false, |
| 683 | target: { |
| 684 | musl: { |
| 685 | enabled: true, |
| 686 | }, |
| 687 | }, |
| 688 | srcs: [ |
| 689 | "LICENSE", |
| 690 | "COPYRIGHT", |
| 691 | |
| 692 | // Headers |
| 693 | "include/**/*.h", |
| 694 | "arch/generic/bits/*.h", |
Colin Cross | c798a68 | 2022-02-07 15:20:49 -0800 | [diff] [blame] | 695 | "android/include/bits/*.h", |
| 696 | "android/include/sys/cdefs.h", |
Colin Cross | 0c85068 | 2022-01-21 22:47:20 -0800 | [diff] [blame] | 697 | ":libc_musl_syscall.h", |
| 698 | ":libc_musl_alltypes.h", |
| 699 | ":libc_musl_sysroot_bits", |
| 700 | |
Colin Cross | c798a68 | 2022-02-07 15:20:49 -0800 | [diff] [blame] | 701 | // Bionic kernel uapi headers |
| 702 | ":libc_musl_sysroot_bionic_headers", |
| 703 | |
Colin Cross | 0c85068 | 2022-01-21 22:47:20 -0800 | [diff] [blame] | 704 | // Libraries |
| 705 | ":libc_musl", |
| 706 | ":libc_musl_for_sysroot", |
| 707 | ":libc_musl_static", |
| 708 | |
| 709 | // Objects |
| 710 | ":libc_musl_crti", |
| 711 | ":libc_musl_crtn", |
| 712 | ":libc_musl_crt1", |
| 713 | ":libc_musl_rcrt1", |
| 714 | ":libc_musl_Scrt1", |
| 715 | |
Colin Cross | 44afa75 | 2022-02-10 17:32:43 -0800 | [diff] [blame^] | 716 | // Embedded linker objects and linker scripts |
| 717 | ":libc_musl_linker_object", |
Colin Cross | 0c85068 | 2022-01-21 22:47:20 -0800 | [diff] [blame] | 718 | ":musl_linker_script", |
| 719 | |
| 720 | // Wrapper scripts |
| 721 | ":libc_musl_clang_wrapper", |
| 722 | ":libc_musl_ld_wrapper", |
| 723 | |
| 724 | // Empty static libraries |
| 725 | ":libc_musl_sysroot_static_empty", |
| 726 | ], |
| 727 | out: ["libc_musl_sysroot.zip"], |
| 728 | tools: [ |
| 729 | "soong_zip", |
| 730 | "merge_zips", |
| 731 | "zip2zip", |
| 732 | ], |
| 733 | cmd: "includes=($(locations include/**/*.h)) && " + |
| 734 | "bits=($(locations arch/generic/bits/*.h)) && " + |
Colin Cross | c798a68 | 2022-02-07 15:20:49 -0800 | [diff] [blame] | 735 | "android_bits=($(locations android/include/bits/*.h)) && " + |
Colin Cross | 44afa75 | 2022-02-10 17:32:43 -0800 | [diff] [blame^] | 736 | "ln -s libc_musl.so $(genDir)/ld-musl.so.1 && " + |
| 737 | "echo -e 'GROUP ( Scrt1-real.o libc_musl_linker_object.o )\nINCLUDE linker.script' > $(genDir)/Scrt1.ld && " + |
| 738 | "echo -e 'GROUP ( libc_musl.so )' > $(genDir)/libc.so && " + |
Colin Cross | 0c85068 | 2022-01-21 22:47:20 -0800 | [diff] [blame] | 739 | "$(location soong_zip) -o $(genDir)/sysroot.zip " + |
| 740 | " -j " + |
| 741 | " -f $(location LICENSE) " + |
| 742 | " -f $(location COPYRIGHT) " + |
| 743 | // headers |
| 744 | " -P include " + |
| 745 | " -C $$(dirname $${includes[0]}) " + |
| 746 | " -D $$(dirname $${includes[0]}) " + |
| 747 | " -P include/bits -j " + |
| 748 | " -f $(location :libc_musl_syscall.h) " + |
| 749 | " -f $(location :libc_musl_alltypes.h) " + |
| 750 | " -D $$(dirname $${bits[0]}) " + |
Colin Cross | c798a68 | 2022-02-07 15:20:49 -0800 | [diff] [blame] | 751 | " -D $$(dirname $${android_bits[0]}) " + |
| 752 | " -P include/sys -j " + |
| 753 | " -f $(location android/include/sys/cdefs.h) " + |
Colin Cross | 0c85068 | 2022-01-21 22:47:20 -0800 | [diff] [blame] | 754 | // crt objects |
| 755 | " -P lib -j " + |
| 756 | " -f $(location :libc_musl_crti) " + |
| 757 | " -f $(location :libc_musl_crtn) " + |
| 758 | " -f $(location :libc_musl_crt1) " + |
| 759 | " -f $(location :libc_musl_rcrt1) " + |
Colin Cross | 0c85068 | 2022-01-21 22:47:20 -0800 | [diff] [blame] | 760 | // embedded linker crt objects |
Colin Cross | 0c85068 | 2022-01-21 22:47:20 -0800 | [diff] [blame] | 761 | " -f $(location :musl_linker_script) " + |
Colin Cross | 44afa75 | 2022-02-10 17:32:43 -0800 | [diff] [blame^] | 762 | " -f $(location :libc_musl_linker_object) " + |
| 763 | // libs |
| 764 | " -f $(location :libc_musl) " + |
| 765 | " -f $(genDir)/ld-musl.so.1 " + |
| 766 | " -f $(genDir)/libc.so " + |
Colin Cross | 0c85068 | 2022-01-21 22:47:20 -0800 | [diff] [blame] | 767 | // clang wrappers |
| 768 | " -P bin -j " + |
| 769 | " -f $(location :libc_musl_clang_wrapper) " + |
| 770 | " -f $(location :libc_musl_ld_wrapper) " + |
| 771 | " && " + |
| 772 | // libs in a separate zip so they can be renamed |
| 773 | "$(location soong_zip) -o $(genDir)/libs.zip " + |
| 774 | " -P lib -j " + |
Colin Cross | 0c85068 | 2022-01-21 22:47:20 -0800 | [diff] [blame] | 775 | " -f $(location :libc_musl_static) " + |
| 776 | " -f $(location :libc_musl_sysroot_static_empty) " + |
Colin Cross | 44afa75 | 2022-02-10 17:32:43 -0800 | [diff] [blame^] | 777 | " -f $(genDir)/Scrt1.ld " + |
| 778 | " -f $(location :libc_musl_Scrt1) " + |
Colin Cross | 0c85068 | 2022-01-21 22:47:20 -0800 | [diff] [blame] | 779 | " && " + |
| 780 | "$(location zip2zip) -i $(genDir)/libs.zip -o $(genDir)/libs_renamed.zip " + |
| 781 | // rename libs from module names to desired names in sysroot |
| 782 | " lib/libc_musl_static.a:lib/libc.a " + |
Colin Cross | 44afa75 | 2022-02-10 17:32:43 -0800 | [diff] [blame^] | 783 | // Swap in linker script for Scrt1.o |
| 784 | " lib/Scrt1.o:lib/Scrt1-real.o " + |
| 785 | " lib/Scrt1.ld:lib/Scrt1.o " + |
Colin Cross | 0c85068 | 2022-01-21 22:47:20 -0800 | [diff] [blame] | 786 | // copy empty static libs |
| 787 | " lib/libc_musl_sysroot_static_empty.a:lib/libcrypt.a " + |
| 788 | " lib/libc_musl_sysroot_static_empty.a:lib/libdl.a " + |
| 789 | " lib/libc_musl_sysroot_static_empty.a:lib/libm.a " + |
| 790 | " lib/libc_musl_sysroot_static_empty.a:lib/libpthread.a " + |
| 791 | " lib/libc_musl_sysroot_static_empty.a:lib/libresolv.a " + |
| 792 | " lib/libc_musl_sysroot_static_empty.a:lib/librt.a " + |
| 793 | " lib/libc_musl_sysroot_static_empty.a:lib/libutil.a " + |
| 794 | " lib/libc_musl_sysroot_static_empty.a:lib/libxnet.a " + |
| 795 | " && " + |
Colin Cross | c798a68 | 2022-02-07 15:20:49 -0800 | [diff] [blame] | 796 | "$(location merge_zips) -ignore-duplicates $(out) $(location :libc_musl_sysroot_bionic_headers) " + |
| 797 | " $(location :libc_musl_sysroot_bits) $(genDir)/sysroot.zip $(genDir)/libs_renamed.zip", |
Colin Cross | 0c85068 | 2022-01-21 22:47:20 -0800 | [diff] [blame] | 798 | } |
| 799 | |
Colin Cross | 22a72b0 | 2021-06-03 16:59:57 -0700 | [diff] [blame] | 800 | build=["sources.bp"] |