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1# Binutils Wrapper hygiene
2#
3# See comments in cc-wrapper's setup hook. This works exactly the same way.
4
5set -u
6
7# Skip setup hook if we're neither a build-time dep, nor, temporarily, doing a
8# native compile.
9#
10# TODO(@Ericson2314): No native exception
11[[ -z ${strictDeps-} ]] || (( "$hostOffset" < 0 )) || return 0
12
13bintoolsWrapper_addLDVars () {
14 # See ../setup-hooks/role.bash
15 local role_post role_pre
16 getHostRoleEnvHook
17
18 if [[ -d "$1/lib64" && ! -L "$1/lib64" ]]; then
19 export NIX_${role_pre}LDFLAGS+=" -L$1/lib64"
20 fi
21
22 if [[ -d "$1/lib" ]]; then
23 # Don't add the /lib directory if it actually doesn't contain any libraries. For instance,
24 # Python and Haskell packages often only have directories like $out/lib/ghc-8.4.3/ or
25 # $out/lib/python3.6/, so having them in LDFLAGS just makes the linker search unnecessary
26 # directories and bloats the size of the environment variable space.
27 if [[ -n "$(echo $1/lib/lib*)" ]]; then
28 export NIX_${role_pre}LDFLAGS+=" -L$1/lib"
29 fi
30 fi
31}
32
33# See ../setup-hooks/role.bash
34getTargetRole
35getTargetRoleWrapper
36
37addEnvHooks "$targetOffset" bintoolsWrapper_addLDVars
38
39# shellcheck disable=SC2157
40if [ -n "@bintools_bin@" ]; then
41 addToSearchPath _PATH @bintools_bin@/bin
42fi
43
44# shellcheck disable=SC2157
45if [ -n "@libc_bin@" ]; then
46 addToSearchPath _PATH @libc_bin@/bin
47fi
48
49# shellcheck disable=SC2157
50if [ -n "@coreutils_bin@" ]; then
51 addToSearchPath _PATH @coreutils_bin@/bin
52fi
53
54# Export tool environment variables so various build systems use the right ones.
55
56export NIX_${role_pre}BINTOOLS=@out@
57
58for cmd in \
59 ar as ld nm objcopy objdump readelf ranlib strip strings size windres
60do
61 if
62 PATH=$_PATH type -p "@targetPrefix@${cmd}" > /dev/null
63 then
64 upper_case="$(echo "$cmd" | tr "[:lower:]" "[:upper:]")"
65 export "${role_pre}${upper_case}=@targetPrefix@${cmd}";
66 export "${upper_case}${role_post}=@targetPrefix@${cmd}";
67 fi
68done
69
70# If unset, assume the default hardening flags.
71: ${NIX_HARDENING_ENABLE="fortify stackprotector pic strictoverflow format relro bindnow"}
72export NIX_HARDENING_ENABLE
73
74# No local scope in sourced file
75unset -v role_pre role_post cmd upper_case
76set +u