bugfix: cc should not add -L or -Wl,-rpath in compile-only mode
- Adding -L and -Wl,-rpath to compile-only command lines ("cc mode" or
"-c") causes clang (if not also other compilers) to emit warnings that
confuse configure systems.
- Clang will print warnings about unused command-line arguments.
- This fix ensures that -L and -Wl,-rpath are not added if the compile
line is just building an object file with -c
- This also cleans up the cc script in several places.
This commit is contained in:
Todd Gamblin
parent
683c7fbf3b
commit
c8fb9b5479
120
lib/spack/env/cc
vendored
120
lib/spack/env/cc
vendored
@ -137,10 +137,12 @@ esac
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# libraries.
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if [[ -z $mode ]] || [[ $mode == ld ]]; then
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for arg in "$@"; do
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if [[ $arg == -v || $arg == -V || $arg == --version || $arg == -dumpversion ]]; then
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case $arg in
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-v|-V|--version|-dumpversion)
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mode=vcheck
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break
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fi
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;;
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esac
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done
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fi
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@ -164,7 +166,7 @@ fi
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# Set up rpath variable according to language.
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eval rpath=\$SPACK_${comp}_RPATH_ARG
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# Dump the version and exit if we're in testing mode.
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# Dump the mode and exit if the command is dump-mode.
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if [[ $SPACK_TEST_COMMAND == dump-mode ]]; then
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echo "$mode"
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exit
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@ -218,9 +220,12 @@ fi
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# It doesn't work with -rpath.
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# This variable controls whether they are added.
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add_rpaths=true
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if [[ ($mode == ld || $mode == ccld) && "$SPACK_SHORT_SPEC" =~ "darwin" ]]; then
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if [[ ($mode == ld || $mode == ccld) && "$SPACK_SHORT_SPEC" =~ "darwin" ]];
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then
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for arg in "$@"; do
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if [[ ($arg == -r && $mode == ld) || ($arg == -r && $mode == ccld) || ($arg == -Wl,-r && $mode == ccld) ]]; then
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if [[ ($arg == -r && $mode == ld) ||
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($arg == -r && $mode == ccld) ||
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($arg == -Wl,-r && $mode == ccld) ]]; then
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add_rpaths=false
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break
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fi
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@ -232,16 +237,21 @@ input_command="$@"
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args=()
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#
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# Parse the command line args, trying hard to keep
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# non-rpath linker arguments in the proper order w.r.t. other command
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# line arguments. This is important for things like groups.
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# Parse the command line arguments.
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#
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# -l arguments are treated as 'other_args' to ensure that they stay in
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# any groups they are a part of. Dependency library -l statements are
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# categorized as 'libs'
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# We extract -L, -I, and -Wl,-rpath arguments from the command line and
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# recombine them with Spack arguments later. We parse these out so that
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# we can make sure that system paths come last, that package arguments
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# come first, and that Spack arguments are injected properly.
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#
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# The various categories will be recombined with compiler flags into
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# args variable later.
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# All other arguments, including -l arguments, are treated as
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# 'other_args' and left in their original order. This ensures that
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# --start-group, --end-group, and other order-sensitive flags continue to
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# work as the caller expects.
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#
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# The libs variable is initialized here for completeness, and it is also
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# used later to inject flags supplied via `ldlibs` on the command
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# line. These come into the wrappers via SPACK_LDLIBS.
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#
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includes=()
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libdirs=()
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@ -316,7 +326,10 @@ while [ -n "$1" ]; do
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shift
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done
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# Prepend cppflags, cflags, cxxflags, fcflags, fflags, and ldflags
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#
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# Prepend flags from Spack's cppflags, cflags, cxxflags, fcflags, fflags,
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# and ldflags.
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#
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# Add ldflags
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case "$mode" in
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@ -324,15 +337,16 @@ case "$mode" in
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args=(${SPACK_LDFLAGS[@]} "${args[@]}") ;;
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esac
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# Add compiler flags.
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# Add C, C++, and Fortran flags
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case "$mode" in
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cc|ccld)
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# Add c, cxx, fc, and f flags
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case $lang_flags in
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C)
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args=(${SPACK_CFLAGS[@]} "${args[@]}") ;;
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CXX)
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args=(${SPACK_CXXFLAGS[@]} "${args[@]}") ;;
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F)
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args=(${SPACK_FFLAGS[@]} "${args[@]}") ;;
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esac
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;;
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esac
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@ -343,30 +357,29 @@ case "$mode" in
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args=(${SPACK_CPPFLAGS[@]} "${args[@]}") ;;
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esac
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case "$mode" in cc|ccld)
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# Add fortran flags
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case $lang_flags in
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F)
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args=(${SPACK_FFLAGS[@]} "${args[@]}") ;;
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esac
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# Include all -L's and prefix/whatever dirs in rpath
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case "$mode" in
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ld|ccld)
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$add_rpaths && rpaths+=("$SPACK_PREFIX/lib")
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$add_rpaths && rpaths+=("$SPACK_PREFIX/lib64")
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;;
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esac
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# Include all -L's and prefix/whatever dirs in rpath
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$add_rpaths && rpaths+=("$SPACK_PREFIX/lib")
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$add_rpaths && rpaths+=("$SPACK_PREFIX/lib64")
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# Read spack dependencies from the path environment variable
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IFS=':' read -ra deps <<< "$SPACK_DEPENDENCIES"
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for dep in "${deps[@]}"; do
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# Append include directories
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case "$mode" in
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cpp|cc|as|ccld)
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if [[ -d $dep/include ]]; then
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if [[ $mode == cpp || $mode == cc || $mode == as || $mode == ccld ]]; then
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includes=("${includes[@]}" "$dep/include")
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fi
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fi
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;;
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esac
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# Append lib and RPATH directories
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# Append lib/lib64 and RPATH directories
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case "$mode" in
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ld|ccld)
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if [[ -d $dep/lib ]]; then
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if [[ $SPACK_RPATH_DEPS == *$dep* ]]; then
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$add_rpaths && rpaths=("${rpaths[@]}" "$dep/lib")
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@ -376,7 +389,6 @@ for dep in "${deps[@]}"; do
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fi
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fi
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# Append lib64 and RPATH directories
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if [[ -d $dep/lib64 ]]; then
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if [[ $SPACK_RPATH_DEPS == *$dep* ]]; then
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$add_rpaths && rpaths+=("$dep/lib64")
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@ -385,21 +397,24 @@ for dep in "${deps[@]}"; do
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libdirs+=("$dep/lib64")
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fi
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fi
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;;
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esac
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done
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# Set extra RPATHs
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IFS=':' read -ra extra_rpaths <<< "$SPACK_COMPILER_EXTRA_RPATHS"
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for extra_rpath in "${extra_rpaths[@]}"; do
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$add_rpaths && rpaths+=("$extra_rpath")
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libdirs+=("$extra_rpath")
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done
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# Add SPACK_LDLIBS to args
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case "$mode" in
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ld|ccld)
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# Set extra RPATHs
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IFS=':' read -ra extra_rpaths <<< "$SPACK_COMPILER_EXTRA_RPATHS"
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for extra_rpath in "${extra_rpaths[@]}"; do
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$add_rpaths && rpaths+=("$extra_rpath")
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libdirs+=("$extra_rpath")
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done
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# Add SPACK_LDLIBS to args
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for lib in ${SPACK_LDLIBS[@]}; do
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libs+=("${lib#-l}")
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done
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;;
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esac
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# Filter system locations to the end of each sublist of args
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@ -419,13 +434,18 @@ for sd in ${SPACK_SYSTEM_DIRS[@]}; do
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fi
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done
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# Put the arguments together into one list
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# Includes come first, then other args, library dirs, and rpaths
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# rpaths get appropriate flag for ld vs ccld mode
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for dir in "${includes[@]}"; do args+=("-I$dir"); done
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args+=("${other_args[@]}")
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for dir in "${libdirs[@]}"; do args+=("-L$dir"); done
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for lib in "${libs[@]}"; do args+=("-l$lib"); done
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# Put the arguments back together in one list
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# Includes first
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for dir in "${includes[@]}"; do
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args+=("-I$dir");
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done
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# Library search paths
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for dir in "${libdirs[@]}"; do
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args+=("-L$dir");
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done
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# RPATHs arguments
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if [ "$mode" = ccld ]; then
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for dir in "${rpaths[@]}"; do
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args+=("$rpath$dir")
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@ -436,10 +456,18 @@ elif [ "$mode" = ld ]; then
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done
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fi
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# Other arguments from the input command
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args+=("${other_args[@]}")
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# Inject SPACK_LDLIBS, if supplied
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for lib in "${libs[@]}"; do
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args+=("-l$lib");
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done
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full_command=("$command")
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full_command+=("${args[@]}")
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# In test command mode, write out full command for Spack tests.
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# dump the full command if the caller supplies SPACK_TEST_COMMAND=dump-args
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if [[ $SPACK_TEST_COMMAND == dump-args ]]; then
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echo "${full_command[@]}"
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exit
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