Arch Linux User Repository

Before upgrading to 8.2, you must set the feature compatibility version to 8.0. See documentation: https://www.mongodb.com/docs/manual/release-notes/8.2-upgrade-standalone/#feature-compatibility-version

Note that building takes about 84gb of memory as of 8.2.1.

Compiling with gcc-15 fails

/usr/lib/gcc/x86_64-pc-linux-gnu/15/include/g++-v15/bits/uses_allocator_args.h:71:29: error: static assertion failed: construction with an allocator must be possible if uses_allocator is true 71 | static_assert(is_constructible_v<_Tp, _Args..., const _Alloc&>, | ^~~~ /usr/lib/gcc/x86_64-pc-linux-gnu/15/include/g++-v15/bits/uses_allocator_args.h:71:29: note: 'std::is_constructible_v<std::tuple\<std::__cxx11::basic_string\<char, std::char_traits\<char>, mongo::TrackingAllocator\<char> >, long int>, const std::scoped_allocator_adaptor\<mongo::TrackingAllocator\<std::pair\<const mongo::UUID, std::tuple\<std::__cxx11::basic_string\<char, std::char_traits\<char>, mongo::TrackingAllocator\<char> >, long int> > > >&>' evaluates to false In file included from src/mongo/util/tracking_allocator.h:38, from src/mongo/bson/util/builder.h:65, from src/mongo/util/str.h:55, from src/mongo/base/data_range.h:45, from src/mongo/bson/bsonelement.h:44, from src/mongo/bson/bsonobj.h:59, from src/mongo/bson/bson_field.h:36, from src/mongo/bson/bsonobjbuilder.h:48, from src/mongo/db/namespace_string.h:51, from src/mongo/db/multi_key_path_tracker.h:38, from src/mongo/db/multi_key_path_tracker.cpp:46:

Working on updating to r8.0.4

perhaps. I'm no longer using mongodb though so I'll disown, feel free to adopt the package

I think there is no need to use bundled boost. AFAIK, there should only be an error at src/mongo/db/storage/backup_block.cpp. That's because boost removed change_extension. Simply following migration table at https://www.boost.org/doc/libs/1_87_0/libs/filesystem/doc/deprecated.html should be fine.

As for PCRE, @olwilliams's workaround does the trick, but I am not sure if it is correct either.

Patches to fix those problems can be found from my OBS repository here: https://build.opensuse.org/projects/home:ZhangHua/packages/mongodb/files/mongodb-7.0.16-boost-filesystem-change_extension-removed.patch?expand=1 https://build.opensuse.org/projects/home:ZhangHua/packages/mongodb/files/mongodb-7.0.16-ERROR_CONDITION_ATOMIC_ASSERTION_EXPECTED-removed.patch?expand=1

The PCRE fix is shamefully stolen from @olwilliams's comment here.

Does not build in a clean chroot for me anymore. Also, are there plans to upgrade to v 8.0.0?

I got a compilation failure with mongodb 7.0.15, system PCRE2 10.45-1:

src/mongo/util/pcre.cpp:68:40: error: 'PCRE2_ERROR_CONDITION_ATOMIC_ASSERTION_EXPECTED' was not declared in this scope; did you mean 'PCRE2_ERROR_CONDITION_ASSERTION_EXPECTED'?
   68 | #define X_(name) std::pair{Errc::name, PCRE2_##name},
      |                                        ^~~~~~
src/mongo/util/pcre.h:158:5: note: in expansion of macro 'X_'
  158 |     X(ERROR_CONDITION_ATOMIC_ASSERTION_EXPECTED) \
      |     ^
src/mongo/util/pcre.cpp:69:31: note: in expansion of macro 'MONGO_PCRE_ERROR_EXPAND_TABLE_'
   69 | constexpr std::array errTable{MONGO_PCRE_ERROR_EXPAND_TABLE_(X_)};
      |                               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
scons:src/mongo/util/pcre.cpp:68:40: error: 'PCRE2_ERROR_CONDITION_ATOMIC_ASSERTION_EXPECTED' was not declared in this scope; did you mean 'PCRE2_ERROR_CONDITION_ASSERTION_EXPECTED'?
   68 | #define X_(name) std::pair{Errc::name, PCRE2_##name},
      |                                        ^~~~~~
src/mongo/util/pcre.h:158:5: note: in expansion of macro 'X_'
  158 |     X(ERROR_CONDITION_ATOMIC_ASSERTION_EXPECTED) \
      |     ^
src/mongo/util/pcre.cpp:69:31: note: in expansion of macro 'MONGO_PCRE_ERROR_EXPAND_TABLE_'
   69 | constexpr std::array errTable{MONGO_PCRE_ERROR_EXPAND_TABLE_(X_)};
      |                               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
scons: *** [build/opt/mongo/util/pcre.o] Error 1

It looks like at some point PCRE2 removed the PCRE2_ERROR_CONDITION_ATOMIC_ASSERTION_EXPECTED error code. I got it to build by just removing that line:

diff -u -r a/src/mongo/util/pcre.h b/src/mongo/util/pcre.h
--- a/src/mongo/util/pcre.h       2025-03-02 16:46:18.443355487 -0500
+++ b/src/mongo/util/pcre.h       2025-03-02 16:46:59.651708274 -0500
@@ -155,7 +155,7 @@
     X(ERROR_ALPHA_ASSERTION_UNKNOWN)             \
     X(ERROR_SCRIPT_RUN_NOT_AVAILABLE)            \
     X(ERROR_TOO_MANY_CAPTURES)                   \
-    X(ERROR_CONDITION_ATOMIC_ASSERTION_EXPECTED) \
+    /*X(ERROR_CONDITION_ATOMIC_ASSERTION_EXPECTED)*/ \
     X(ERROR_BACKSLASH_K_IN_LOOKAROUND)           \
     X(ERROR_NOMATCH)                             \
     X(ERROR_PARTIAL)                             \

I don't know enough Mongo or PCRE2 to say if that's actually a reasonable fix or not; I was installing this as a prerequisite for the unifi package, and it seemed to start up fine.

mongodb 7.0.14 fails to build in a clean aarch64 chroot.

Checking that the C++ compiler can link a C++ program... no
C++ compiler g++ can't link C++ programs

The config.log shows the linker cannot link a hello world program:

scons: Configure: Checking that the C++ compiler can link a C++ program...
build/scons/opt/sconf_temp/conftest_ac30bfea77045c1c67c4f51773b51414_0.cpp <-
  |
  |#include <iostream>
  |#include <cstdlib>
  |
  |int main() {
  |    std::cout << "Hello, World" << std::endl;
  |    return EXIT_SUCCESS;
  |}
  |
g++ -o build/scons/opt/sconf_temp/conftest_ac30bfea77045c1c67c4f51773b51414_0.o -c -Woverloaded-virtual -march=armv8-a -O2 -pipe -fstack-protector-strong -fno-plt -fexceptions -Wp,-D_FORTIFY_SOURCE=3 -Wformat -Werror=format-security -fstack-clash-protection -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -Wp,-D_GLIBCXX_ASSERTIONS -Werror -ffp-contract=off -fasynchronous-unwind-tables -Wall -Wsign-compare -Wno-unknown-pragmas -Winvalid-pch -fno-omit-frame-pointer -fno-strict-aliasing -O2 -mtune=generic -DNDEBUG -D_XOPEN_SOURCE=700 -D_GNU_SOURCE build/scons/opt/sconf_temp/conftest_ac30bfea77045c1c67c4f51773b51414_0.cpp
g++ -o build/scons/opt/sconf_temp/conftest_ac30bfea77045c1c67c4f51773b51414_0_5d3fee522b232c2fb8a6072c881f85cf -Wl,--fatal-warnings -Wl,-O1 -Wl,--sort-common -Wl,--as-needed -Wl,-z,relro -Wl,-z,now -Wl,-z,pack-relative-relocs -pthread -Wl,-z,now -rdynamic build/scons/opt/sconf_temp/conftest_ac30bfea77045c1c67c4f51773b51414_0.o -lm -lresolv
/usr/bin/ld: warning: -z pack-relative-relocs ignored
collect2: error: ld returned 1 exit status
scons: Configure: no

It seems due to -Wl,--fatal-warnings being enabled the warning about -z pack-relative-relocs is treated as an error. In /etc/makepkg.conf I removed the LDFLAG -z pack-relative-relocs and now it compiles.

I'll upgrade to 7.0.14 in the meantime, 8.0.0 will need more patches it seems

indeed, I'm on the process of pushing mongodb 8.0