| 1 | # Copyright 1999-2005 Gentoo Foundation |
1 | # Copyright 1999-2005 Gentoo Foundation |
| 2 | # Distributed under the terms of the GNU General Public License v2 |
2 | # Distributed under the terms of the GNU General Public License v2 |
| 3 | # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.91 2005/07/22 21:47:51 vapier Exp $ |
3 | # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.92 2005/08/01 10:50:55 kevquinn Exp $ |
| 4 | |
4 | |
| 5 | |
5 | |
| 6 | # need access to emktemp() |
6 | # need access to emktemp() |
| 7 | inherit eutils toolchain-funcs multilib |
7 | inherit eutils toolchain-funcs multilib |
| 8 | |
8 | |
| … | |
… | |
| 56 | # hooked function for hardened gcc that appends |
56 | # hooked function for hardened gcc that appends |
| 57 | # -fno-stack-protector to {C,CXX,LD}FLAGS |
57 | # -fno-stack-protector to {C,CXX,LD}FLAGS |
| 58 | # when a package is filtering -fstack-protector, -fstack-protector-all |
58 | # when a package is filtering -fstack-protector, -fstack-protector-all |
| 59 | # notice: modern automatic specs files will also suppress -fstack-protector-all |
59 | # notice: modern automatic specs files will also suppress -fstack-protector-all |
| 60 | # when only -fno-stack-protector is given |
60 | # when only -fno-stack-protector is given |
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61 | # |
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62 | # |
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63 | ################ DEPRECATED functions ################ |
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64 | # The following are still present to avoid breaking existing |
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65 | # code more than necessary; however they are deprecated. Please |
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66 | # use gcc-specs-* from toolchain-funcs.eclass instead, if you |
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67 | # need to know which hardened techs are active in the compiler. |
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68 | # See bug #100974 |
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69 | # |
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70 | #### has_hardened #### |
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71 | # Returns true if the compiler has 'Hardened' in its version string, |
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72 | # (note; switched-spec vanilla compilers satisfy this condition) or |
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73 | # the specs file name contains 'hardened'. |
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74 | # |
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75 | #### has_pie #### |
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76 | # Returns true if the compiler by default or with current CFLAGS |
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77 | # builds position-independent code. |
| 61 | # |
78 | # |
| 62 | #### has_pic #### |
79 | #### has_pic #### |
| 63 | # Returns true if the compiler by default or with current CFLAGS |
80 | # Returns true if the compiler by default or with current CFLAGS |
| 64 | # builds position-independent code. |
81 | # builds position-independent code. |
| 65 | # |
82 | # |
| … | |
… | |
| 315 | fi |
332 | fi |
| 316 | done |
333 | done |
| 317 | return 1 |
334 | return 1 |
| 318 | } |
335 | } |
| 319 | |
336 | |
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337 | # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs |
| 320 | has_hardened() { |
338 | has_hardened() { |
| 321 | test_version_info Hardened && return 0 |
339 | test_version_info Hardened && return 0 |
| 322 | # the specs file wont exist unless gcc has GCC_SPECS support |
340 | # the specs file wont exist unless gcc has GCC_SPECS support |
| 323 | [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \ |
341 | [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \ |
| 324 | return 0 |
342 | return 0 |
| 325 | return 1 |
343 | return 1 |
| 326 | } |
344 | } |
| 327 | |
345 | |
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346 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
| 328 | # indicate whether PIC is set |
347 | # indicate whether PIC is set |
| 329 | has_pic() { |
348 | has_pic() { |
| 330 | [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0 |
349 | [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0 |
| 331 | [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0 |
350 | [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0 |
| 332 | [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0 |
351 | [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0 |
| 333 | return 1 |
352 | return 1 |
| 334 | } |
353 | } |
| 335 | |
354 | |
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355 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
| 336 | # indicate whether PIE is set |
356 | # indicate whether PIE is set |
| 337 | has_pie() { |
357 | has_pie() { |
| 338 | [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0 |
358 | [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0 |
| 339 | [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0 |
359 | [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0 |
| 340 | [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__)" ] && return 0 |
360 | [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__)" ] && return 0 |
| 341 | # test PIC while waiting for specs to be updated to generate __PIE__ |
361 | # test PIC while waiting for specs to be updated to generate __PIE__ |
| 342 | [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0 |
362 | [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0 |
| 343 | return 1 |
363 | return 1 |
| 344 | } |
364 | } |
| 345 | |
365 | |
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366 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
| 346 | # indicate whether code for SSP is being generated for all functions |
367 | # indicate whether code for SSP is being generated for all functions |
| 347 | has_ssp_all() { |
368 | has_ssp_all() { |
| 348 | # note; this matches only -fstack-protector-all |
369 | # note; this matches only -fstack-protector-all |
| 349 | [ "${CFLAGS/-fstack-protector-all}" != "${CFLAGS}" ] && return 0 |
370 | [ "${CFLAGS/-fstack-protector-all}" != "${CFLAGS}" ] && return 0 |
| 350 | [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__)" ] && return 0 |
371 | [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__)" ] && return 0 |
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372 | gcc-specs-ssp && return 0 |
| 351 | return 1 |
373 | return 1 |
| 352 | } |
374 | } |
| 353 | |
375 | |
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376 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
| 354 | # indicate whether code for SSP is being generated |
377 | # indicate whether code for SSP is being generated |
| 355 | has_ssp() { |
378 | has_ssp() { |
| 356 | # note; this matches both -fstack-protector and -fstack-protector-all |
379 | # note; this matches both -fstack-protector and -fstack-protector-all |
| 357 | [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0 |
380 | [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0 |
| 358 | [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__)" ] && return 0 |
381 | [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__)" ] && return 0 |
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382 | gcc-specs-ssp && return 0 |
| 359 | return 1 |
383 | return 1 |
| 360 | } |
384 | } |
| 361 | |
385 | |
| 362 | has_m64() { |
386 | has_m64() { |
| 363 | # this doesnt test if the flag is accepted, it tests if the flag |
387 | # this doesnt test if the flag is accepted, it tests if the flag |
| … | |
… | |
| 438 | export LDFLAGS |
462 | export LDFLAGS |
| 439 | return 0 |
463 | return 0 |
| 440 | } |
464 | } |
| 441 | |
465 | |
| 442 | fstack-flags() { |
466 | fstack-flags() { |
| 443 | if has_ssp; then |
467 | if gcc-specs-ssp; then |
| 444 | [ -z "`is-flag -fno-stack-protector`" ] && |
468 | [ -z "`is-flag -fno-stack-protector`" ] && |
| 445 | export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" |
469 | export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" |
| 446 | fi |
470 | fi |
| 447 | return 0 |
471 | return 0 |
| 448 | } |
472 | } |
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