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author | Nikolay Amiantov <ab@fmap.me> | 2016-03-14 06:52:12 +0300 |
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committer | Nikolay Amiantov <ab@fmap.me> | 2016-03-14 06:58:18 +0300 |
commit | 87607af7a1bf35682f8ad206307ed46e8ead260a (patch) | |
tree | f31b4b46082d3d3b98abf424fa1cd5446a8beb8d /pkgs/build-support/cc-wrapper/cc-wrapper.sh | |
parent | d05a3cd763cedce9690ec21b2180425e8d70dabf (diff) | |
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cc-wrapper: add C++-specific paths if `-x c++` is passed
Diffstat (limited to 'pkgs/build-support/cc-wrapper/cc-wrapper.sh')
-rw-r--r-- | pkgs/build-support/cc-wrapper/cc-wrapper.sh | 42 |
1 files changed, 24 insertions, 18 deletions
diff --git a/pkgs/build-support/cc-wrapper/cc-wrapper.sh b/pkgs/build-support/cc-wrapper/cc-wrapper.sh index 6e12a0d8bc8..41567fde269 100644 --- a/pkgs/build-support/cc-wrapper/cc-wrapper.sh +++ b/pkgs/build-support/cc-wrapper/cc-wrapper.sh @@ -15,29 +15,37 @@ fi source @out@/nix-support/utils.sh -# Figure out if linker flags should be passed. GCC prints annoying -# warnings when they are not needed. +# 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 getVersion=0 nonFlagArgs=0 +[[ "@prog@" = *++ ]] && isCpp=1 || isCpp=0 -for i in "$@"; do - if [ "$i" = -c ]; then +params=("$@") +n=0 +while [ $n -lt ${#params[*]} ]; do + p=${params[n]} + p2=${params[$((n+1))]} + if [ "$p" = -c ]; then dontLink=1 - elif [ "$i" = -S ]; then + elif [ "$p" = -S ]; then dontLink=1 - elif [ "$i" = -E ]; then + elif [ "$p" = -E ]; then dontLink=1 - elif [ "$i" = -E ]; then + elif [ "$p" = -E ]; then dontLink=1 - elif [ "$i" = -M ]; then + elif [ "$p" = -M ]; then dontLink=1 - elif [ "$i" = -MM ]; then + elif [ "$p" = -MM ]; then dontLink=1 - elif [ "$i" = -x ]; then - # At least for the cases c-header or c++-header we should set dontLink. - # I expect no one use -x other than making precompiled headers. + elif [[ "$p" = -x && "$p2" = *-header ]]; then dontLink=1 + elif [[ "$p" = -x && "$p2" = c++* && "$isCpp" = 0 ]]; then + isCpp=1 + elif [ "$p" = -nostdlib ]; then + isCpp=-1 elif [ "${i:0:1}" != - ]; then nonFlagArgs=1 elif [ "$i" = -m32 ]; then @@ -45,6 +53,7 @@ for i in "$@"; do NIX_LDFLAGS="$NIX_LDFLAGS -dynamic-linker $(cat @out@/nix-support/dynamic-linker-m32)" fi fi + n=$((n + 1)) done # If we pass a flag like -Wl, then gcc will call the linker unless it @@ -58,7 +67,6 @@ fi # Optionally filter out paths not refering to the store. -params=("$@") if [ "$NIX_ENFORCE_PURITY" = 1 -a -n "$NIX_STORE" ]; then rest=() n=0 @@ -83,11 +91,9 @@ if [ "$NIX_ENFORCE_PURITY" = 1 -a -n "$NIX_STORE" ]; then params=("${rest[@]}") fi -if [[ "@prog@" = *++ ]]; then - if echo "$@" | grep -qv -- -nostdlib; then - NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE ${NIX_CXXSTDLIB_COMPILE-@default_cxx_stdlib_compile@}" - NIX_CFLAGS_LINK="$NIX_CFLAGS_LINK $NIX_CXXSTDLIB_LINK" - fi +if [[ "$isCpp" = 1 ]]; then + NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE ${NIX_CXXSTDLIB_COMPILE-@default_cxx_stdlib_compile@}" + NIX_CFLAGS_LINK="$NIX_CFLAGS_LINK $NIX_CXXSTDLIB_LINK" fi # Add the flags for the C compiler proper. |