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| -rw-r--r-- | doc/build-openbsd.md | 72 |
1 files changed, 33 insertions, 39 deletions
diff --git a/doc/build-openbsd.md b/doc/build-openbsd.md index cd1d217b47..0817821221 100644 --- a/doc/build-openbsd.md +++ b/doc/build-openbsd.md @@ -23,47 +23,31 @@ git clone https://github.com/bitcoin/bitcoin.git See [dependencies.md](dependencies.md) for a complete overview. -GCC -------- - -The default C++ compiler that comes with OpenBSD 6.2 is g++ 4.2.1. This version is old (from 2007), and is not able to compile the current version of Bitcoin Core because it has no C++11 support. We'll install a newer version of GCC: - -```bash - pkg_add g++ - ``` - - This compiler will not overwrite the system compiler, it will be installed as `egcc` and `eg++` in `/usr/local/bin`. +**Important**: From OpenBSD 6.2 onwards a C++11-supporting clang compiler is +part of the base image, and while building it is necessary to make sure that this +compiler is used and not ancient g++ 4.2.1. This is done by appending +`CC=cc CXX=c++` to configuration commands. Mixing different compilers +within the same executable will result in linker errors. ### Building BerkeleyDB -BerkeleyDB is only necessary for the wallet functionality. To skip this, pass `--disable-wallet` to `./configure`. +BerkeleyDB is only necessary for the wallet functionality. To skip this, pass +`--disable-wallet` to `./configure` and skip to the next section. It is recommended to use Berkeley DB 4.8. You cannot use the BerkeleyDB library from ports, for the same reason as boost above (g++/libstd++ incompatibility). If you have to build it yourself, you can use [the installation script included -in contrib/](contrib/install_db4.sh) like so +in contrib/](/contrib/install_db4.sh) like so ```shell -./contrib/install_db4.sh `pwd` CC=egcc CXX=eg++ CPP=ecpp +./contrib/install_db4.sh `pwd` CC=cc CXX=c++ ``` -from the root of the repository. - -### Resource limits - -The standard ulimit restrictions in OpenBSD are very strict: - - data(kbytes) 1572864 +from the root of the repository. Then set `BDB_PREFIX` for the next section: -This, unfortunately, may no longer be enough to compile some `.cpp` files in the project, -at least with GCC 4.9.4 (see issue [#6658](https://github.com/bitcoin/bitcoin/issues/6658)). -If your user is in the `staff` group the limit can be raised with: - - ulimit -d 3000000 - -The change will only affect the current shell and processes spawned by it. To -make the change system-wide, change `datasize-cur` and `datasize-max` in -`/etc/login.conf`, and reboot. +```shell +export BDB_PREFIX="$PWD/db4" +``` ### Building Bitcoin Core @@ -79,13 +63,13 @@ Make sure `BDB_PREFIX` is set to the appropriate path from the above steps. To configure with wallet: ```bash -./configure --with-gui=no CC=egcc CXX=eg++ CPP=ecpp \ +./configure --with-gui=no CC=cc CXX=c++ \ BDB_LIBS="-L${BDB_PREFIX}/lib -ldb_cxx-4.8" BDB_CFLAGS="-I${BDB_PREFIX}/include" ``` To configure without wallet: ```bash -./configure --disable-wallet --with-gui=no CC=egcc CXX=eg++ CPP=ecpp +./configure --disable-wallet --with-gui=no CC=cc CXX=c++ ``` Build and run the tests: @@ -94,13 +78,23 @@ gmake # use -jX here for parallelism gmake check ``` -Clang ------------------------------- +Resource limits +------------------- -```bash -pkg_add llvm +If the build runs into out-of-memory errors, the instructions in this section +might help. + +The standard ulimit restrictions in OpenBSD are very strict: + + data(kbytes) 1572864 + +This, unfortunately, in some cases not enough to compile some `.cpp` files in the project, +(see issue [#6658](https://github.com/bitcoin/bitcoin/issues/6658)). +If your user is in the `staff` group the limit can be raised with: + + ulimit -d 3000000 + +The change will only affect the current shell and processes spawned by it. To +make the change system-wide, change `datasize-cur` and `datasize-max` in +`/etc/login.conf`, and reboot. -./configure --disable-wallet --with-gui=no CC=clang CXX=clang++ -gmake # use -jX here for parallelism -gmake check -``` |