* gcc-wrapper2: obsolete.

svn path=/nixpkgs/branches/stdenv-updates/; revision=19533
This commit is contained in:
Eelco Dolstra 2010-01-19 10:32:41 +00:00
parent 0dcc2967ef
commit dfd81bebb1
8 changed files with 0 additions and 581 deletions

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To be removed after we merge stdenv-updates in.
stdenv-updates should have this gcc-wrapper2 as gcc-wrapper.
Changelog against gcc-wrapper:
- Support for linking shared objects with direct mention of the /path/libxxx.so object,
thus, adding its path to the rpath.

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# `-B@out@/bin' forces gcc to use ld-wrapper.sh when calling ld.
export NIX_CFLAGS_COMPILE="-B@out@/bin/ $NIX_CFLAGS_COMPILE"
if test -e @out@/nix-support/libc-cflags; then
export NIX_CFLAGS_COMPILE="$(cat @out@/nix-support/libc-cflags) $NIX_CFLAGS_COMPILE"
fi
if test -e @out@/nix-support/gcc-cflags; then
export NIX_CFLAGS_COMPILE="$(cat @out@/nix-support/gcc-cflags) $NIX_CFLAGS_COMPILE"
fi
if test -e @out@/nix-support/libc-ldflags; then
export NIX_LDFLAGS="$NIX_LDFLAGS $(cat @out@/nix-support/libc-ldflags)"
fi
if test -e @out@/nix-support/gcc-ldflags; then
export NIX_LDFLAGS="$NIX_LDFLAGS $(cat @out@/nix-support/gcc-ldflags)"
fi
if test -e @out@/nix-support/libc-ldflags-before; then
export NIX_LDFLAGS_BEFORE="$(cat @out@/nix-support/libc-ldflags-before) $NIX_LDFLAGS_BEFORE"
fi
export NIX_GCC_WRAPPER_FLAGS_SET=1

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source $stdenv/setup
ensureDir $out/bin
ensureDir $out/nix-support
if test -z "$nativeLibc"; then
dynamicLinker="$libc/lib/$dynamicLinker"
echo $dynamicLinker > $out/nix-support/dynamic-linker
if test -e $libc/lib/32/ld-linux.so.2; then
echo $libc/lib/32/ld-linux.so.2 > $out/nix-support/dynamic-linker-m32
fi
# The "-B$libc/lib/" flag is a quick hack to force gcc to link
# against the crt1.o from our own glibc, rather than the one in
# /usr/lib. (This is only an issue when using an `impure'
# compiler/linker, i.e., one that searches /usr/lib and so on.)
#
# Unfortunately, setting -B appears to override the default search
# path. Thus, the gcc-specific "../includes-fixed" directory is
# now longer searched and glibc's <limits.h> header fails to
# compile, because it uses "#include_next <limits.h>" to find the
# limits.h file in ../includes-fixed. To remedy the problem,
# another -idirafter is necessary to add that directory again.
echo "-B$libc/lib/ -idirafter $libc/include -idirafter $gcc/lib/gcc/*/*/include-fixed" > $out/nix-support/libc-cflags
echo "-L$libc/lib" > $out/nix-support/libc-ldflags
# The dynamic linker is passed in `ldflagsBefore' to allow
# explicit overrides of the dynamic linker by callers to gcc/ld
# (the *last* value counts, so ours should come first).
echo "-dynamic-linker $dynamicLinker" > $out/nix-support/libc-ldflags-before
fi
if test -n "$nativeTools"; then
gccPath="$nativePrefix/bin"
ldPath="$nativePrefix/bin"
else
if test -e "$gcc/lib64"; then
gccLDFlags="$gccLDFlags -L$gcc/lib64"
fi
gccLDFlags="$gccLDFlags -L$gcc/lib"
echo "$gccLDFlags" > $out/nix-support/gcc-ldflags
# GCC shows $gcc/lib in `gcc -print-search-dirs', but not
# $gcc/lib64 (even though it does actually search there...)..
# This confuses libtool. So add it to the compiler tool search
# path explicitly.
if test -e "$gcc/lib64"; then
gccCFlags="$gccCFlags -B$gcc/lib64"
fi
echo "$gccCFlags" > $out/nix-support/gcc-cflags
gccPath="$gcc/bin"
ldPath="$binutils/bin"
fi
doSubstitute() {
local src=$1
local dst=$2
# Can't use substitute() here, because replace may not have been
# built yet (in the bootstrap).
sed \
-e "s^@out@^$out^g" \
-e "s^@shell@^$shell^g" \
-e "s^@gcc@^$gcc^g" \
-e "s^@gccProg@^$gccProg^g" \
-e "s^@binutils@^$binutils^g" \
-e "s^@libc@^$libc^g" \
-e "s^@ld@^$ldPath/ld^g" \
< "$src" > "$dst"
}
# Make wrapper scripts around gcc, g++, and gfortran. Also make symlinks
# cc, c++, and f77.
mkGccWrapper() {
local dst=$1
local src=$2
if ! test -f "$src"; then
echo "$src does not exist (skipping)"
return
fi
gccProg="$src"
doSubstitute "$gccWrapper" "$dst"
chmod +x "$dst"
}
mkGccWrapper $out/bin/gcc $gccPath/gcc
ln -s gcc $out/bin/cc
mkGccWrapper $out/bin/g++ $gccPath/g++
ln -s g++ $out/bin/c++
if test -e $gccPath/gfortran; then
mkGccWrapper $out/bin/gfortran $gccPath/gfortran
ln -s gfortran $out/bin/g77
ln -s gfortran $out/bin/f77
fi
# Create a symlink to as (the assembler). This is useful when a
# gcc-wrapper is installed in a user environment, as it ensures that
# the right assembler is called.
ln -s $ldPath/as $out/bin/as
# Make a wrapper around the linker.
doSubstitute "$ldWrapper" "$out/bin/ld"
chmod +x "$out/bin/ld"
# Emit a setup hook. Also store the path to the original GCC and
# Glibc.
test -n "$gcc" && echo $gcc > $out/nix-support/orig-gcc
test -n "$libc" && echo $libc > $out/nix-support/orig-libc
doSubstitute "$addFlags" "$out/nix-support/add-flags.sh"
doSubstitute "$setupHook" "$out/nix-support/setup-hook"
cp -p $utils $out/nix-support/utils.sh
# Propagate the wrapped gcc so that if you install the wrapper, you get
# tools like gcov, the manpages, etc. as well (including for binutils
# and Glibc).
if test -z "$nativeTools"; then
echo $gcc $binutils $libc > $out/nix-support/propagated-user-env-packages
fi

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@ -1,61 +0,0 @@
# The Nix `gcc' stdenv.mkDerivation is not directly usable, since it doesn't
# know where the C library and standard header files are. Therefore
# the compiler produced by that package cannot be installed directly
# in a user environment and used from the command line. This
# stdenv.mkDerivation provides a wrapper that sets up the right environment
# variables so that the compiler and the linker just "work".
{ name ? "", stdenv, nativeTools, nativeLibc, nativePrefix ? ""
, gcc ? null, libc ? null, binutils ? null, shell ? ""
}:
assert nativeTools -> nativePrefix != "";
assert !nativeTools -> gcc != null && binutils != null;
assert !nativeLibc -> libc != null;
assert gcc != null;
let
gccVersion = (builtins.parseDrvName gcc.name).version;
gccName = (builtins.parseDrvName gcc.name).name;
in
stdenv.mkDerivation {
name =
(if name != "" then name else gccName + "-wrapper") +
(if gcc != null && gccVersion != "" then "-" + gccVersion else "");
builder = ./builder.sh;
setupHook = ./setup-hook.sh;
gccWrapper = ./gcc-wrapper.sh;
ldWrapper = ./ld-wrapper.sh;
utils = ./utils.sh;
addFlags = ./add-flags;
inherit nativeTools nativeLibc nativePrefix gcc;
libc = if nativeLibc then null else libc;
binutils = if nativeTools then null else binutils;
langC = if nativeTools then true else gcc.langC;
langCC = if nativeTools then true else gcc.langCC;
langFortran = if nativeTools then false else gcc ? langFortran;
shell = if shell == "" then stdenv.shell else shell;
meta =
let gcc_ = if gcc != null then gcc else {}; in
(if gcc_ ? meta then removeAttrs gcc.meta ["priority"] else {}) //
{ description =
stdenv.lib.attrByPath ["meta" "description"] "System C compiler" gcc_
+ " (wrapper script)";
};
# The dynamic linker has different names on different Linux platforms.
dynamicLinker =
if !nativeLibc then
(if stdenv.system == "i686-linux" then "ld-linux.so.2" else
if stdenv.system == "x86_64-linux" then "ld-linux-x86-64.so.2" else
if stdenv.system == "powerpc-linux" then "ld.so.1" else
abort "don't know the name of the dynamic linker for this platform")
else "";
}

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#! @shell@ -e
if test -n "$NIX_GCC_WRAPPER_START_HOOK"; then
source "$NIX_GCC_WRAPPER_START_HOOK"
fi
if test -z "$NIX_GCC_WRAPPER_FLAGS_SET"; then
source @out@/nix-support/add-flags.sh
fi
source @out@/nix-support/utils.sh
# Figure out if linker flags should be passed. GCC prints annoying
# warnings when they are not needed.
dontLink=0
getVersion=0
nonFlagArgs=0
for i in "$@"; do
if test "$i" = "-c"; then
dontLink=1
elif test "$i" = "-S"; then
dontLink=1
elif test "$i" = "-E"; then
dontLink=1
elif test "$i" = "-E"; then
dontLink=1
elif test "$i" = "-M"; then
dontLink=1
elif test "$i" = "-MM"; then
dontLink=1
elif test "${i:0:1}" != "-"; then
nonFlagArgs=1
elif test "$i" = "-m32"; then
if test -e @out@/nix-support/dynamic-linker-m32; then
NIX_LDFLAGS="$NIX_LDFLAGS -dynamic-linker $(cat @out@/nix-support/dynamic-linker-m32)"
fi
fi
done
# If we pass a flag like -Wl, then gcc will call the linker unless it
# can figure out that it has to do something else (e.g., because of a
# "-c" flag). So if no non-flag arguments are given, don't pass any
# linker flags. This catches cases like "gcc" (should just print
# "gcc: no input files") and "gcc -v" (should print the version).
if test "$nonFlagArgs" = "0"; then
dontLink=1
fi
# Optionally filter out paths not refering to the store.
params=("$@")
if test "$NIX_ENFORCE_PURITY" = "1" -a -n "$NIX_STORE"; then
rest=()
n=0
while test $n -lt ${#params[*]}; do
p=${params[n]}
p2=${params[$((n+1))]}
if test "${p:0:3}" = "-L/" && badPath "${p:2}"; then
skip $p
elif test "$p" = "-L" && badPath "$p2"; then
n=$((n + 1)); skip $p2
elif test "${p:0:3}" = "-I/" && badPath "${p:2}"; then
skip $p
elif test "$p" = "-I" && badPath "$p2"; then
n=$((n + 1)); skip $p2
elif test "$p" = "-isystem" && badPath "$p2"; then
n=$((n + 1)); skip $p2
else
rest=("${rest[@]}" "$p")
fi
n=$((n + 1))
done
params=("${rest[@]}")
fi
# Add the flags for the C compiler proper.
extraAfter=($NIX_CFLAGS_COMPILE)
extraBefore=()
if test "$dontLink" != "1"; then
# Add the flags that should only be passed to the compiler when
# linking.
extraAfter=(${extraAfter[@]} $NIX_CFLAGS_LINK)
# Add the flags that should be passed to the linker (and prevent
# `ld-wrapper' from adding NIX_LDFLAGS again).
for i in $NIX_LDFLAGS_BEFORE; do
extraBefore=(${extraBefore[@]} "-Wl,$i")
done
for i in $NIX_LDFLAGS; do
if test "${i:0:3}" = "-L/"; then
extraAfter=(${extraAfter[@]} "$i")
else
extraAfter=(${extraAfter[@]} "-Wl,$i")
fi
done
export NIX_LDFLAGS_SET=1
if test "$NIX_STRIP_DEBUG" = "1"; then
# Add executable-stripping flags.
extraAfter=(${extraAfter[@]} $NIX_CFLAGS_STRIP)
fi
fi
# As a very special hack, if the arguments are just `-v', then don't
# add anything. This is to prevent `gcc -v' (which normally prints
# out the version number and returns exit code 0) from printing out
# `No input files specified' and returning exit code 1.
if test "$*" = "-v"; then
extraAfter=()
extraBefore=()
fi
# Optionally print debug info.
if test "$NIX_DEBUG" = "1"; then
echo "original flags to @gccProg@:" >&2
for i in "${params[@]}"; do
echo " $i" >&2
done
echo "extraBefore flags to @gccProg@:" >&2
for i in ${extraBefore[@]}; do
echo " $i" >&2
done
echo "extraAfter flags to @gccProg@:" >&2
for i in ${extraAfter[@]}; do
echo " $i" >&2
done
fi
if test -n "$NIX_GCC_WRAPPER_EXEC_HOOK"; then
source "$NIX_GCC_WRAPPER_EXEC_HOOK"
fi
# Call the real `gcc'. Filter out warnings from stderr about unused
# `-B' flags, since they confuse some programs. Deep bash magic to
# apply grep to stderr (by swapping stdin/stderr twice).
if test -z "$NIX_GCC_NEEDS_GREP"; then
@gccProg@ ${extraBefore[@]} "${params[@]}" ${extraAfter[@]}
else
(@gccProg@ ${extraBefore[@]} "${params[@]}" ${extraAfter[@]} 3>&2 2>&1 1>&3- \
| (grep -v 'file path prefix' || true); exit ${PIPESTATUS[0]}) 3>&2 2>&1 1>&3-
exit $?
fi

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#! @shell@ -e
if test -n "$NIX_LD_WRAPPER_START_HOOK"; then
source "$NIX_LD_WRAPPER_START_HOOK"
fi
if test -z "$NIX_GCC_WRAPPER_FLAGS_SET"; then
source @out@/nix-support/add-flags.sh
fi
source @out@/nix-support/utils.sh
# Optionally filter out paths not refering to the store.
params=("$@")
if test "$NIX_ENFORCE_PURITY" = "1" -a -n "$NIX_STORE" \
-a \( -z "$NIX_IGNORE_LD_THROUGH_GCC" -o -z "$NIX_LDFLAGS_SET" \); then
rest=()
n=0
while test $n -lt ${#params[*]}; do
p=${params[n]}
p2=${params[$((n+1))]}
if test "${p:0:3}" = "-L/" && badPath "${p:2}"; then
skip $p
elif test "$p" = "-L" && badPath "$p2"; then
n=$((n + 1)); skip $p2
elif test "$p" = "-rpath" && badPath "$p2"; then
n=$((n + 1)); skip $p2
elif test "$p" = "-dynamic-linker" && badPath "$p2"; then
n=$((n + 1)); skip $p2
elif test "${p:0:1}" = "/" && badPath "$p"; then
# We cannot skip this; barf.
echo "impure path \`$p' used in link" >&2
exit 1
else
rest=("${rest[@]}" "$p")
fi
n=$((n + 1))
done
params=("${rest[@]}")
fi
extra=()
extraBefore=()
if test -z "$NIX_LDFLAGS_SET"; then
extra=(${extra[@]} $NIX_LDFLAGS)
extraBefore=(${extraBefore[@]} $NIX_LDFLAGS_BEFORE)
fi
# Add all used dynamic libraries to the rpath.
if test "$NIX_DONT_SET_RPATH" != "1"; then
# First, find all -L... switches.
allParams=("${params[@]}" ${extra[@]})
libPath=""
addToLibPath() {
local path="$1"
if test "${path:0:1}" != "/"; then return 0; fi
case "$path" in
*..*|*./*|*/.*|*//*)
local path2
if path2=$(readlink -f "$path"); then
path="$path2"
fi
;;
esac
case $libPath in
*\ $path\ *) return 0 ;;
esac
libPath="$libPath $path "
}
n=0
while test $n -lt ${#allParams[*]}; do
p=${allParams[n]}
p2=${allParams[$((n+1))]}
if test "${p:0:3}" = "-L/"; then
addToLibPath ${p:2}
elif test "$p" = "-L"; then
addToLibPath ${p2}
n=$((n + 1))
elif $(echo "$p" | grep -q '\.so\($\|\.\)'); then
path="$(dirname "$p")";
addToLibPath "${path}"
fi
n=$((n + 1))
done
# Second, for each directory in the library search path (-L...),
# see if it contains a dynamic library used by a -l... flag. If
# so, add the directory to the rpath.
rpath=""
addToRPath() {
# If the path is not in the store, don't add it to the rpath.
# This typically happens for libraries in /tmp that are later
# copied to $out/lib. If not, we're screwed.
if test "${1:0:${#NIX_STORE}}" != "$NIX_STORE"; then return 0; fi
case $rpath in
*\ $1\ *) return 0 ;;
esac
rpath="$rpath $1 "
}
for i in $libPath; do
n=0
while test $n -lt ${#allParams[*]}; do
p=${allParams[n]}
p2=${allParams[$((n+1))]}
if test "${p:0:2}" = "-l" -a -f "$i/lib${p:2}.so"; then
addToRPath $i
break
elif test "$p" = "-l" -a -f "$i/lib${p2}"; then
# I haven't seen `-l foo', but you never know...
addToRPath $i
break
elif $(echo "$p" | grep -q '\.so\($\|\.\)'); then
path="$(dirname "$p")";
if test "$path" == "$i"; then
addToRPath $i
break;
fi
fi
n=$((n + 1))
done
done
# Finally, add `-rpath' switches.
for i in $rpath; do
extra=(${extra[@]} -rpath $i)
done
fi
# Optionally print debug info.
if test "$NIX_DEBUG" = "1"; then
echo "original flags to @ld@:" >&2
for i in "${params[@]}"; do
echo " $i" >&2
done
echo "extra flags to @ld@:" >&2
for i in ${extra[@]}; do
echo " $i" >&2
done
fi
if test -n "$NIX_LD_WRAPPER_EXEC_HOOK"; then
source "$NIX_LD_WRAPPER_EXEC_HOOK"
fi
exec @ld@ ${extraBefore[@]} "${params[@]}" ${extra[@]}

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addCVars () {
if test -d $1/include; then
export NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE -I$1/include"
fi
if test -d $1/lib64; then
export NIX_LDFLAGS="$NIX_LDFLAGS -L$1/lib64"
fi
if test -d $1/lib; then
export NIX_LDFLAGS="$NIX_LDFLAGS -L$1/lib"
fi
}
envHooks=(${envHooks[@]} addCVars)
# Note: these come *after* $out in the PATH (see setup.sh).
if test -n "@gcc@"; then
addToSearchPath PATH @gcc@/bin
fi
if test -n "@binutils@"; then
addToSearchPath PATH @binutils@/bin
fi
if test -n "@libc@"; then
addToSearchPath PATH @libc@/bin
fi

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skip () {
if test "$NIX_DEBUG" = "1"; then
echo "skipping impure path $1" >&2
fi
}
# Checks whether a path is impure. E.g., `/lib/foo.so' is impure, but
# `/nix/store/.../lib/foo.so' isn't.
badPath() {
local p=$1
# Relative paths are okay (since they're presumably relative to
# the temporary build directory).
if test "${p:0:1}" != "/"; then return 1; fi
# Otherwise, the path should refer to the store or some temporary
# directory (including the build directory).
test \
"${p:0:${#NIX_STORE}}" != "$NIX_STORE" -a \
"${p:0:4}" != "/tmp" -a \
"${p:0:${#NIX_BUILD_TOP}}" != "$NIX_BUILD_TOP"
}