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https://github.com/hillu/Go-yara
Go bindings for YARA
https://github.com/hillu/Go-yara
cgo go golang hacktoberfest yara
Last synced: 20 days ago
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Go bindings for YARA
- Host: GitHub
- URL: https://github.com/hillu/Go-yara
- Owner: hillu
- License: bsd-2-clause
- Created: 2015-01-25T01:01:11.000Z (almost 10 years ago)
- Default Branch: master
- Last Pushed: 2024-07-22T21:45:05.000Z (4 months ago)
- Last Synced: 2024-07-31T01:28:52.976Z (4 months ago)
- Topics: cgo, go, golang, hacktoberfest, yara
- Language: Go
- Homepage:
- Size: 287 KB
- Stars: 354
- Watchers: 23
- Forks: 114
- Open Issues: 11
-
Metadata Files:
- Readme: README.cross-building.md
- Funding: .github/FUNDING.yml
- License: LICENSE
Awesome Lists containing this project
README
# Cross-building _go-yara_
_go-yara_ can be cross-built for a different CPU
architecture/operating system platform, provided a C cross-compiler
for the target platform is available to be used by the _cgo_ tool.
After the _yara_ library has been built using the proper C
cross-compiler through the usual `configure / make / make install`
steps, _go-yara_ can be built and installed. The following environment
variables need to be set when running `go build` or `go install`:
- `GOOS`, `GOARCH` indicate the cross compilation target.
- `CGO_ENABLED` has to be set to 1 beacuse it defaults to 0 when
cross-compiling.
- `CC` may have to be set to point to the C cross compiler. (It
defaults to the system C compiler, usually gcc).
- `PKG_CONFIG_PATH` may have to be set to point to the _pkg-config_
directory where the `yara.pc` file has been
installed. (Alternatively, the `yara_no_pkg_config` build tag can be
used together with `CGO_CFLAGS` and `CGO_LDFLAGS` environment
variables.)
For the examples below, YARA is built out-of-tree, i.e. the build
artifacts are placed into a separate directory referred to by the
`YARA_BUILD_*` shell variables. `YARA_SRC` refers to the YARA source
directory. The `PREFIX_*` shell variables refer to target directory
for the `make install` step.
Since the MinGW environments provided by [MSYS2](https://msys2.org/)
are technically cross-building environments, similar steps have to be
taken, see below.
## Example: Building an entirely static Linux binary (musl-libc)
Because binaries that are linked statically with GNU libc are not
entirely portable [musl libc](https://www.musl-libc.org/) can be used
instead. (Sadly, it does not seem to be possible to cross-build for
different architctures using the standard `musl-gcc.specs` file.)
On a Debian-based system, install `musl-tools`.
Build _libyara_ and [`_examples/simple-yara`](_examples/simple-yara):
``` shell
( cd ${YARA_BUILD_LINUX_MUSL} && \
${YARA_SRC}/configure CC=musl-gcc --prefix=${PREFIX_LINUX_MUSL})
make -C ${YARA_BUILD_LINUX_MUSL} install
GOOS=linux GOARCH=amd64 CGO_ENABLED=1 \
CC=musl-gcc \
PKG_CONFIG_PATH=${PREFIX_LINUX_MUSL}/lib/pkgconfig \
go build -ldflags '-extldflags "-static"' -tags yara_static -o simple-yara-musl ./_examples/simple-yara
```
## Example: Cross-building for Windows
On a Debian-based system, install the MinGW C compiler
`gcc-mingw-w64-i686`, `gcc-mingw-w64-x86-64` for Win32, Win64,
respectively.
Build _libyara_ and [`_examples/simple-yara`](_examples/simple-yara) for Win32:
``` shell
( cd ${YARA_BUILD_WIN32} && \
${YARA_SRC}/configure --host=i686-w64-mingw32 --prefix=${PREFIX_WIN32} )
make -C ${YARA_BUILD_WIN32} install
GOOS=windows GOARCH=386 CGO_ENABLED=1 \
CC=i686-w64-mingw32-gcc \
PKG_CONFIG_PATH=${PREFIX_WIN32}/lib/pkgconfig \
go build -ldflags '-extldflags "-static"' -tags yara_static -o simple-yara-w32.exe ./_examples/simple-yara
```
Build _libyara_ and [`_examples/simple-yara`](_examples/simple-yara) for Win64:
``` shell
( cd ${YARA_BUILD_WIN64} && \
${YARA_SRC}/configure --host=x86_64-w64-mingw32 --prefix=${PREFIX_WIN64} )
make -C ${YARA_BUILD_WIN64} install
GOOS=windows GOARCH=amd64 CGO_ENABLED=1 \
CC=x86_64-w64-mingw32-gcc \
PKG_CONFIG_PATH=${PREFIX_WIN64}/lib/pkgconfig \
go build -ldflags '-extldflags "-static"' -tags yara_static -o simple-yara-w64.exe ./_examples/simple-yara
```
## Example: Building on Windows, using MSYS2
This example assumes that [MSYS2](https://msys2.org/) has been
installed to `C:\msys64`. The following packages have to be installed:
- autoconf
- automake
- libtool
- mingw-w64-{x86_64,i686}-gcc
- mingw-w64-{x86_64,i686}-make
- mingw-w64-{x86_64,i686}-pkgconf
While MSYS2 contains usable Go compilers, the [official
distribution](https://golang.org/dl) is used here.
Build _libyara_ and [`_examples/simple-yara`](_examples/simple-yara) for Win32:
- At the MinGW 32 prompt:
```
cd ${YARA_BUILD_WIN32} && ${YARA_SRC}/configure
make -C ${YARA_BUILD_WIN32} install
```
- At the CMD or Powershell prompt:
```
set PATH=%PATH%;C:\msys64\mingw32\bin
set CGO_ENABLED=1
set GOARCH=386
go build -ldflags "-extldflags=-static" -tags yara_static -o simple-yara-w32.exe .\_examples\simple-yara
```
Build _libyara_ and [`_examples/simple-yara`](_examples/simple-yara) for Win64:
- At the MinGW 64 prompt:
```
cd ${YARA_BUILD_WIN64} && ${YARA_SRC}/configure
make -C ${YARA_BUILD_WIN64} install
```
- At the CMD or Powershell prompt:
```
set PATH=%PATH%;C:\msys64\mingw64\bin
set CGO_ENABLED=1
set GOARCH=amd64
go build -ldflags "-extldflags=-static" -tags yara_static -o simple-yara-w64.exe .\_examples\simple-yara
```