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Bug 788276 - Properly check for broken (deprecated) compilers. r=gps.
Check for old versions of llvm.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| dnl This Source Code Form is subject to the terms of the Mozilla Public | ||
| dnl License, v. 2.0. If a copy of the MPL was not distributed with this | ||
| dnl file, You can obtain one at http://mozilla.org/MPL/2.0/. | ||
|
|
||
| dnl Check if the compiler suffers from http://llvm.org/pr8927. If so, ask the | ||
| dnl user to upgrade. | ||
|
|
||
| AC_DEFUN([MOZ_LLVM_PR8927], | ||
| [ | ||
| AC_MSG_CHECKING(for llvm pr8927) | ||
| ac_have_llvm_pr8927="no" | ||
| AC_LANG_SAVE | ||
| AC_LANG_C | ||
| _SAVE_CFLAGS=$CFLAGS | ||
| CFLAGS="-O2" | ||
| AC_TRY_RUN([ | ||
| struct foobar { | ||
| int x; | ||
| }; | ||
| static const struct foobar* foo() { | ||
| static const struct foobar d = { 0 }; | ||
| return &d; | ||
| } | ||
| static const struct foobar* bar() { | ||
| static const struct foobar d = { 0 }; | ||
| return &d; | ||
| } | ||
| __attribute__((noinline)) int zed(const struct foobar *a, | ||
| const struct foobar *b) { | ||
| return a == b; | ||
| } | ||
| int main() { | ||
| return zed(foo(), bar()); | ||
| } | ||
| ], true, | ||
| ac_have_llvm_pr8927="yes", | ||
| true) | ||
| CFLAGS="$_SAVE_CFLAGS" | ||
| AC_LANG_RESTORE | ||
| if test "$ac_have_llvm_pr8927" = "yes"; then | ||
| AC_MSG_RESULT(yes) | ||
| echo This compiler would miscompile firefox, plase upgrade. | ||
| echo see http://developer.mozilla.org/en-US/docs/Developer_Guide/Build_Instructions/Mac_OS_X_Prerequisites | ||
| echo for more information. | ||
| exit 1 | ||
| else | ||
| AC_MSG_RESULT(no) | ||
| fi | ||
| ]) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| dnl This Source Code Form is subject to the terms of the Mozilla Public | ||
| dnl License, v. 2.0. If a copy of the MPL was not distributed with this | ||
| dnl file, You can obtain one at http://mozilla.org/MPL/2.0/. | ||
|
|
||
| dnl Check if the compiler suffers from http://llvm.org/pr8927. If so, ask the | ||
| dnl user to upgrade. | ||
|
|
||
| AC_DEFUN([MOZ_LLVM_PR8927], | ||
| [ | ||
| AC_MSG_CHECKING(for llvm pr8927) | ||
| ac_have_llvm_pr8927="no" | ||
| AC_LANG_SAVE | ||
| AC_LANG_C | ||
| _SAVE_CFLAGS=$CFLAGS | ||
| CFLAGS="-O2" | ||
| AC_TRY_RUN([ | ||
| struct foobar { | ||
| int x; | ||
| }; | ||
| static const struct foobar* foo() { | ||
| static const struct foobar d = { 0 }; | ||
| return &d; | ||
| } | ||
| static const struct foobar* bar() { | ||
| static const struct foobar d = { 0 }; | ||
| return &d; | ||
| } | ||
| __attribute__((noinline)) int zed(const struct foobar *a, | ||
| const struct foobar *b) { | ||
| return a == b; | ||
| } | ||
| int main() { | ||
| return zed(foo(), bar()); | ||
| } | ||
| ], true, | ||
| ac_have_llvm_pr8927="yes", | ||
| true) | ||
| CFLAGS="$_SAVE_CFLAGS" | ||
| AC_LANG_RESTORE | ||
| if test "$ac_have_llvm_pr8927" = "yes"; then | ||
| AC_MSG_RESULT(yes) | ||
| echo This compiler would miscompile firefox, plase upgrade. | ||
| echo see http://developer.mozilla.org/en-US/docs/Developer_Guide/Build_Instructions/Mac_OS_X_Prerequisites | ||
| echo for more information. | ||
| exit 1 | ||
| else | ||
| AC_MSG_RESULT(no) | ||
| fi | ||
| ]) |
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