diff options
Diffstat (limited to 'nixpkgs/pkgs/build-support/cc-wrapper/gnat-wrapper.sh')
| -rw-r--r-- | nixpkgs/pkgs/build-support/cc-wrapper/gnat-wrapper.sh | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/build-support/cc-wrapper/gnat-wrapper.sh b/nixpkgs/pkgs/build-support/cc-wrapper/gnat-wrapper.sh new file mode 100644 index 000000000000..e75eb3eb1ebf --- /dev/null +++ b/nixpkgs/pkgs/build-support/cc-wrapper/gnat-wrapper.sh @@ -0,0 +1,182 @@ +#! @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 + +cInclude=0 + +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 + +if [ -z "${NIX_GNAT_WRAPPER_EXTRA_FLAGS_SET_@suffixSalt@:-}" ]; then + source @out@/nix-support/add-gnat-extra-flags.sh +fi + +# Parse command line options and set several variables. +# For instance, figure out if linker flags should be passed. +# GCC prints annoying warnings when they are not needed. +dontLink=0 +nonFlagArgs=0 +# shellcheck disable=SC2193 + +expandResponseParams "$@" +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+"${rest[@]}"}) +fi + +case "$(basename $0)x" in + "gnatbindx") + extraBefore=() + extraAfter=($NIX_GNATFLAGS_COMPILE_@suffixSalt@) + ;; + "gnatchopx") + extraBefore=("--GCC=@out@/bin/gcc") + extraAfter=() + ;; + "gnatcleanx") + extraBefore=($NIX_GNATFLAGS_COMPILE_@suffixSalt@) + extraAfter=() + ;; + "gnatlinkx") + extraBefore=() + extraAfter=("--GCC=@out@/bin/gcc") + ;; + "gnatlsx") + extraBefore=() + extraAfter=($NIX_GNATFLAGS_COMPILE_@suffixSalt@) + ;; + "gnatmakex") + extraBefore=("--GNATBIND=@out@/bin/gnatbind" "--GNATLINK=@out@/bin/gnatlink") + extraAfter=($NIX_GNATFLAGS_COMPILE_@suffixSalt@ -cargs $NIX_GNATMAKE_CARGS_@suffixSalt@) + ;; +esac + +# As a very special hack, if the arguments are just `-v', then don't +# add anything. This is to prevent `gcc -v' (which normally prints +# out the version number and returns exit code 0) from printing out +# `No input files specified' and returning exit code 1. +if [ "$*" = -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[@]}"} |