191bf2460d
When using a build.rs script to dynamically generate bindgen bindings at build-time, it will run on the host, and by default bindgen will generate bindings for the host arch/libc instead of the target. To generate the bindings on cross, we need to use BINDGEN_EXTRA_CLANG_ARGS to specify the proper sysroot and include path for the target. These arguments are not used for anything other than bindgen's clang invocation.
53 lines
1.6 KiB
Bash
53 lines
1.6 KiB
Bash
# Define equivalent of TOML config in environment
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# [build]
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# jobs = $XBPS_MAKEJOBS
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export CARGO_BUILD_JOBS="$XBPS_MAKEJOBS"
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export CARGO_HOME="/host/cargo"
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if [ "$CROSS_BUILD" ]; then
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# Define equivalent of TOML config in environment
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# [target.${RUST_TARGET}]
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# linker = ${CC}
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_XBPS_CROSS_RUST_TARGET_ENV="${XBPS_CROSS_RUST_TARGET^^}"
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_XBPS_CROSS_RUST_TARGET_ENV="${_XBPS_CROSS_RUST_TARGET_ENV//-/_}"
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export CARGO_TARGET_${_XBPS_CROSS_RUST_TARGET_ENV}_LINKER="$CC"
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unset _XBPS_CROSS_RUST_TARGET_ENV
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# Define equivalent of TOML config in environment
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# [build]
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# target = ${RUST_TARGET}
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export CARGO_BUILD_TARGET="$RUST_TARGET"
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# If cc-rs needs to build host binaries, it guesses the compiler and
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# uses default (wrong) flags unless they are specified explicitly;
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# innocuous flags are used here just to disable its defaults
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export HOST_CC="gcc"
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export HOST_CFLAGS="-O2"
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# Crates that use bindgen via build.rs are not cross-aware unless these are set
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export BINDGEN_EXTRA_CLANG_ARGS="--sysroot=${XBPS_CROSS_BASE} -I${XBPS_CROSS_BASE}/usr/include"
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else
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unset CARGO_BUILD_TARGET
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fi
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# For cross-compiling rust -sys crates
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export PKG_CONFIG_ALLOW_CROSS=1
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# gettext-rs
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export GETTEXT_BIN_DIR=/usr/bin
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export GETTEXT_LIB_DIR="${XBPS_CROSS_BASE}/usr/lib/gettext"
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export GETTEXT_INCLUDE_DIR="${XBPS_CROSS_BASE}/usr/include"
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# libssh2-sys
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export LIBSSH2_SYS_USE_PKG_CONFIG=1
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# sodium-sys
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export SODIUM_LIB_DIR="${XBPS_CROSS_BASE}/usr/include"
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export SODIUM_INC_DIR="${XBPS_CROSS_BASE}/usr/lib"
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# openssl-sys
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export OPENSSL_NO_VENDOR=1
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# pcre2-sys, only necessary for musl targets
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export PCRE2_SYS_STATIC=0
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