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doc: set CC_FOR_BUILD when building on OpenBSD

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Closes: #19559

While #19559 has been fixed upstream, it makes sense to not only
recommend using `CC_FOR_BUILD`here  until the fix is pulled in as
part of our next libsecp update, but after discussing with Cory,
he suggested we should be setting this on OpenBSD (which still has
the an ancient GCC) regardless.
This commit is contained in:
fanquake 2020-07-28 16:29:47 +08:00
parent cea39fc268
commit 01cd24c226
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1 changed files with 7 additions and 7 deletions
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14
doc/build-openbsd.md
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@ -1,6 +1,6 @@
OpenBSD build guide
======================
(updated for OpenBSD 6.4)
(updated for OpenBSD 6.7)
This guide describes how to build bitcoind and command-line utilities on OpenBSD.
@ -15,7 +15,7 @@ Run the following as root to install the base dependencies for building:
pkg_add git gmake libevent libtool boost
pkg_add autoconf # (select highest version, e.g. 2.69)
pkg_add automake # (select highest version, e.g. 1.16)
pkg_add python # (select highest version, e.g. 3.6)
pkg_add python # (select highest version, e.g. 3.8)
git clone https://github.com/bitcoin/bitcoin.git
```
@ -23,10 +23,10 @@ git clone https://github.com/bitcoin/bitcoin.git
See [dependencies.md](dependencies.md) for a complete overview.
**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.
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 CC_FOR_BUILD=cc CXX=c++` to configuration commands. Mixing different
compilers within the same executable will result in errors.
### Building BerkeleyDB
@ -77,7 +77,7 @@ To configure with wallet:
To configure without wallet:
```bash
./configure --disable-wallet --with-gui=no CC=cc CXX=c++ MAKE=gmake
./configure --disable-wallet --with-gui=no CC=cc CC_FOR_BUILD=cc CXX=c++ MAKE=gmake
```
Build and run the tests: