doc: Update OpenBSD build instructions for 6.2

There is no more need to install a compiler. This simplifies instructions a lot.
BTCGPU · Dec 22, 2017 · 6915f93 · 6915f93
1 parent 180a255
commit 6915f93
Showing 1 changed file with 33 additions and 39 deletions.
diff --git 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
-```