On 2020/09/24 16:29, Daniel Spannbauer wrote:
Hello,
I try to build the Firefox 79.0 since some weeks now, with now success.
The latest build also ends with "recipe for target 'compile' failed".
I think the error is here: recipe for target 'Unified_cpp_js_src10.o' failed
What are the minimum requirements for building the Firefox? I'm building
with gcc7, which is the newest one for my target system (old Leap 42.3)
Complete Log is here:
https://build.opensuse.org/package/live_build_log/home:Marco-GmbH:42.3/MozillaFirefox/openSUSE_Leap_42.3/x86_64
Any hints?
Best regards
Daniel
This may not help much, but I am using gcc-9 for my local build of
Thunderbird from the latest comm-central branch.
(This is under Debian and I use test-repository to obtain gcc-9.)
But then, gcc-9 may have an issue or two with checking of format string
of snprintf(). It is very clever to check on the overflow when
snprintf() is used. However, at least, in Thunderbird calendar code,
there is a usage of snprintf() that triggers a bug in this feature, and
I had to patch the source locally. YMMV. At least, I don't encounter
the spurious bug in the mozilla-central portion of the code.
It looks that your issue is related to the subtle difference of handling
of compile time constant (constexpr) between clang c++ frontend and g++'s.
---
format -Wno-shadow -Wno-attributes -MD -MP -MF
.deps/Unified_cpp_js_src_jit2.o.pp Unified_cpp_js_src_jit2.cpp
[ 192s] 1:43.01 In file included from Unified_cpp_js_src10.cpp:11:0:
[ 192s] 1:43.01 /home/abuild/rpmbuild/BUILD/firefox-79.0/js/src/jsdate.cpp:
In function ‘bool ParseDate(const CharT*, size_t, JS::ClippedTime*)’:
[ 192s] 1:43.01
/home/abuild/rpmbuild/BUILD/firefox-79.0/js/src/jsdate.cpp:1267:52: error:
‘constexpr size_t MinKeywordLength(const CharsAndAction (&)[N]) [with long
unsigned int N = 32; size_t = long unsigned int]’ called in a constant expression
[ 192s] 1:43.01 constexpr size_t MinLength =
MinKeywordLength(keywords);
[ 192s] 1:43.01 ~~~~~~~~~~~~~~~~^~~~~~~~~~
[ 192s] 1:43.01
/home/abuild/rpmbuild/BUILD/firefox-79.0/js/src/jsdate.cpp:1064:18: note:
‘constexpr size_t MinKeywordLength(const CharsAndAction (&)[N]) [with long
unsigned int N = 32; size_t = long unsigned int]’ is not usable as a constexpr
function because:
[ 192s] 1:43.01 constexpr size_t MinKeywordLength(const CharsAndAction
(&keywords)[N]) {
[ 192s] 1:43.01 ^~~~~~~~~~~~~~~~
[ 192s] 1:43.01 /home/abuild/rpmbuild/BUILD/firefox-79.0/js/src/jsdate.cpp:1067:55:
error: call to non-constexpr function ‘static std::size_t
std::char_traits<char>::length(const char_type*)’
[ 192s] 1:43.01 min = std::min(min,
std::char_traits<char>::length(keyword.chars));
[ 192s] 1:43.01
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~
---
I can't locate closed bug easily om bugzilla, but a bug was filed by
aceman for TB build using gcc/g++ earlier this year. The compilation
failed due to a few usages of constexpr in the source code. : I noticed
the issue myself but since gcc/g++ is not officially supported I did not
bother to report it, but aceman's issue and the patch was exactly what I
had locally.
You may want to check it out in bugzilla to figure out how to circumvent
it. Or try gcc-9 first.
Chiaki
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