pyrox.dev
{bintools,cc}-wrapper: set up Darwin SDK paths
Some compilers may know to check these paths when `SDKROOT` is set, but
it’s not assumed they do. `SDKROOT` is instead derived from the
`DEVELOPER_DIR`, and `NIX_CFLAGS_COMPILE` is set up with the sysroot and
necessary framework and include search paths.
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pkgs/build-support/bintools-wrapper/add-darwin-ldflags-before.sh
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pkgs/build-support/bintools-wrapper/add-darwin-ldflags-before.sh
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extraBefore+=(-@darwinPlatform@_version_min "${@darwinMinVersionVariable@_@suffixSalt@:-@darwinMinVersion@}")
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fi
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fi
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+
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+
mangleVarSingle DEVELOPER_DIR ${role_suffixes[@]+"${role_suffixes[@]}"}
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+
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+
# Allow wrapped bintools to do something useful when no `DEVELOPER_DIR` is set, which can happen when
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# the compiler is run outside of a stdenv or intentionally in an environment with no environment variables set.
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DEVELOPER_DIR=${DEVELOPER_DIR_@suffixSalt@}
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+
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# Darwin looks for frameworks in the SDK located at `DEVELOPER_DIR`.
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extraBefore+=("-F$DEVELOPER_DIR/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks")
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extraBefore+=("-L$DEVELOPER_DIR/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/lib")
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-1
pkgs/build-support/cc-wrapper/add-flags.sh
+17
-1
pkgs/build-support/cc-wrapper/add-flags.sh
···
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NIX_CFLAGS_COMPILE_BEFORE_@suffixSalt@="$(< @out@/nix-support/cc-cflags-before) $NIX_CFLAGS_COMPILE_BEFORE_@suffixSalt@"
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fi
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-
# Only add darwin min version flag if a default darwin min version is set,
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# which is a signal that we're targetting darwin.
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if [ "@darwinMinVersion@" ]; then
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mangleVarSingle @darwinMinVersionVariable@ ${role_suffixes[@]+"${role_suffixes[@]}"}
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NIX_CFLAGS_COMPILE_BEFORE_@suffixSalt@="-m@darwinPlatformForCC@-version-min=${@darwinMinVersionVariable@_@suffixSalt@:-@darwinMinVersion@} $NIX_CFLAGS_COMPILE_BEFORE_@suffixSalt@"
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fi
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# That way forked processes will not extend these environment variables again.
···
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NIX_CFLAGS_COMPILE_BEFORE_@suffixSalt@="$(< @out@/nix-support/cc-cflags-before) $NIX_CFLAGS_COMPILE_BEFORE_@suffixSalt@"
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fi
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+
# Only add darwin min version flag and set up `DEVELOPER_DIR` if a default darwin min version is set,
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# which is a signal that we're targetting darwin.
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if [ "@darwinMinVersion@" ]; then
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mangleVarSingle @darwinMinVersionVariable@ ${role_suffixes[@]+"${role_suffixes[@]}"}
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NIX_CFLAGS_COMPILE_BEFORE_@suffixSalt@="-m@darwinPlatformForCC@-version-min=${@darwinMinVersionVariable@_@suffixSalt@:-@darwinMinVersion@} $NIX_CFLAGS_COMPILE_BEFORE_@suffixSalt@"
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+
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# `DEVELOPER_DIR` is used to dynamically locate libSystem (and the SDK frameworks) based on the SDK at that path.
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+
mangleVarSingle DEVELOPER_DIR ${role_suffixes[@]+"${role_suffixes[@]}"}
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+
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+
# Allow wrapped compilers to do something useful when no `DEVELOPER_DIR` is set, which can happen when
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+
# the compiler is run outside of a stdenv or intentionally in an environment with no environment variables set.
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DEVELOPER_DIR=${DEVELOPER_DIR_@suffixSalt@}
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+
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# xcbuild needs `SDKROOT` to be the name of the SDK, which it sets in its own wrapper,
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# but compilers expect it to point to the absolute path.
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SDKROOT="$DEVELOPER_DIR/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk"
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+
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# Set up various library paths since compilers may not support (or may have disabled) finding them in the sysroot.
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NIX_CFLAGS_COMPILE_BEFORE_@suffixSalt@+=" -isysroot $SDKROOT"
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+
NIX_CFLAGS_COMPILE_@suffixSalt@+=" -idirafter $SDKROOT/usr/include"
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NIX_CFLAGS_COMPILE_@suffixSalt@+=" -iframework $SDKROOT/System/Library/Frameworks"
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fi
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# That way forked processes will not extend these environment variables again.