nixpkgs/pkgs/build-support/cc-wrapper/gnat-wrapper.sh
John Ericson 1ac5398589 *-wrapper; Switch from infixSalt to suffixSalt
I hate the thing too even though I made it, and rather just get rid of
it. But we can't do that yet. In the meantime, this brings us more
inline with autoconf and will make it slightly easier for me to write a
pkg-config wrapper, which we need.
2020-05-12 00:44:44 -04:00

166 lines
4.8 KiB
Bash

#! @shell@
set -eu -o pipefail +o posix
shopt -s nullglob
if (( "${NIX_DEBUG:-0}" >= 7 )); then
set -x
fi
path_backup="$PATH"
# That @-vars are substituted separately from bash evaluation makes
# shellcheck think this, and others like it, are useless conditionals.
# shellcheck disable=SC2157
if [[ -n "@coreutils_bin@" && -n "@gnugrep_bin@" ]]; then
PATH="@coreutils_bin@/bin:@gnugrep_bin@/bin"
fi
source @out@/nix-support/utils.bash
# Flirting with a layer violation here.
if [ -z "${NIX_BINTOOLS_WRAPPER_FLAGS_SET_@suffixSalt@:-}" ]; then
source @bintools@/nix-support/add-flags.sh
fi
# Put this one second so libc ldflags take priority.
if [ -z "${NIX_CC_WRAPPER_FLAGS_SET_@suffixSalt@:-}" ]; then
source @out@/nix-support/add-flags.sh
fi
# Parse command line options and set several variables.
# For instance, figure out if linker flags should be passed.
# GCC prints annoying warnings when they are not needed.
dontLink=0
nonFlagArgs=0
# shellcheck disable=SC2193
expandResponseParams "$@"
declare -i n=0
nParams=${#params[@]}
while (( "$n" < "$nParams" )); do
p=${params[n]}
p2=${params[n+1]:-} # handle `p` being last one
if [ "$p" = -c ]; then
dontLink=1
elif [ "$p" = -S ]; then
dontLink=1
elif [ "$p" = -E ]; then
dontLink=1
elif [ "$p" = -E ]; then
dontLink=1
elif [ "$p" = -M ]; then
dontLink=1
elif [ "$p" = -MM ]; then
dontLink=1
elif [[ "$p" = -x && "$p2" = *-header ]]; then
dontLink=1
elif [[ "$p" != -?* ]]; then
# A dash alone signifies standard input; it is not a flag
nonFlagArgs=1
fi
n+=1
done
# If we pass a flag like -Wl, then gcc will call the linker unless it
# can figure out that it has to do something else (e.g., because of a
# "-c" flag). So if no non-flag arguments are given, don't pass any
# linker flags. This catches cases like "gcc" (should just print
# "gcc: no input files") and "gcc -v" (should print the version).
if [ "$nonFlagArgs" = 0 ]; then
dontLink=1
fi
# Optionally filter out paths not refering to the store.
if [[ "${NIX_ENFORCE_PURITY:-}" = 1 && -n "$NIX_STORE" ]]; then
rest=()
nParams=${#params[@]}
declare -i n=0
while (( "$n" < "$nParams" )); do
p=${params[n]}
p2=${params[n+1]:-} # handle `p` being last one
if [ "${p:0:3}" = -L/ ] && badPath "${p:2}"; then
skip "${p:2}"
elif [ "$p" = -L ] && badPath "$p2"; then
n+=1; skip "$p2"
elif [ "${p:0:3}" = -I/ ] && badPath "${p:2}"; then
skip "${p:2}"
elif [ "$p" = -I ] && badPath "$p2"; then
n+=1; skip "$p2"
elif [ "${p:0:4}" = -aI/ ] && badPath "${p:3}"; then
skip "${p:3}"
elif [ "$p" = -aI ] && badPath "$p2"; then
n+=1; skip "$p2"
elif [ "${p:0:4}" = -aO/ ] && badPath "${p:3}"; then
skip "${p:3}"
elif [ "$p" = -aO ] && badPath "$p2"; then
n+=1; skip "$p2"
elif [ "$p" = -isystem ] && badPath "$p2"; then
n+=1; skip "$p2"
else
rest+=("$p")
fi
n+=1
done
# Old bash empty array hack
params=(${rest+"${rest[@]}"})
fi
# Clear march/mtune=native -- they bring impurity.
if [ "$NIX_ENFORCE_NO_NATIVE_@suffixSalt@" = 1 ]; then
rest=()
# Old bash empty array hack
for p in ${params+"${params[@]}"}; do
if [[ "$p" = -m*=native ]]; then
skip "$p"
else
rest+=("$p")
fi
done
# Old bash empty array hack
params=(${rest+"${rest[@]}"})
fi
if [ "$(basename $0)x" = "gnatmakex" ]; then
extraBefore=("--GNATBIND=@out@/bin/gnatbind" "--GNATLINK=@out@/bin/gnatlink")
extraAfter=($NIX_GNATFLAGS_COMPILE_@suffixSalt@)
fi
if [ "$(basename $0)x" = "gnatbindx" ]; then
extraBefore=()
extraAfter=($NIX_GNATFLAGS_COMPILE_@suffixSalt@)
fi
if [ "$(basename $0)x" = "gnatlinkx" ]; then
extraBefore=()
extraAfter=("--GCC=@out@/bin/gcc")
fi
# As a very special hack, if the arguments are just `-v', then don't
# add anything. This is to prevent `gcc -v' (which normally prints
# out the version number and returns exit code 0) from printing out
# `No input files specified' and returning exit code 1.
if [ "$*" = -v ]; then
extraAfter=()
extraBefore=()
fi
# Optionally print debug info.
if (( "${NIX_DEBUG:-0}" >= 1 )); then
# Old bash workaround, see ld-wrapper for explanation.
echo "extra flags before to @prog@:" >&2
printf " %q\n" ${extraBefore+"${extraBefore[@]}"} >&2
echo "original flags to @prog@:" >&2
printf " %q\n" ${params+"${params[@]}"} >&2
echo "extra flags after to @prog@:" >&2
printf " %q\n" ${extraAfter+"${extraAfter[@]}"} >&2
fi
PATH="$path_backup"
# Old bash workaround, see above.
exec @prog@ \
${extraBefore+"${extraBefore[@]}"} \
${params+"${params[@]}"} \
${extraAfter+"${extraAfter[@]}"}