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authorTodd Gamblin <tgamblin@llnl.gov>2018-08-07 22:58:13 -0700
committerTodd Gamblin <tgamblin@llnl.gov>2018-08-08 01:51:51 -0700
commitbb5d83890d4f9a95ab7ef410221aaff0f2f76535 (patch)
tree18abd16517657a5c924a25063c45a5c54bb1b29e /lib
parent4210f839e2e96d208a202afd0803a9bccebb4567 (diff)
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cc: refactor flag adding so that it's not in reverse order
- flags were prepended in reverse order to args, but this makes it hard to see what order they'll be in on the final command line. - add them in the order they'll appear to make cc easier to maintain. - simplify code for assembling the command line - fix separator used in SPACK_SYSTEM_DIRS test
Diffstat (limited to 'lib')
-rwxr-xr-xlib/spack/env/cc71
-rw-r--r--lib/spack/spack/test/cc.py14
2 files changed, 56 insertions, 29 deletions
diff --git a/lib/spack/env/cc b/lib/spack/env/cc
index e8a0903d2a..2dd82d7d73 100755
--- a/lib/spack/env/cc
+++ b/lib/spack/env/cc
@@ -80,7 +80,7 @@ IFS=':' read -ra SPACK_SYSTEM_DIRS <<< "${SPACK_SYSTEM_DIRS}"
# test whether a path is a system directory
function system_dir {
path="$1"
- for sd in ${SPACK_SYSTEM_DIRS[@]}; do
+ for sd in "${SPACK_SYSTEM_DIRS[@]}"; do
if [ "${path}" == "${sd}" ] || [ "${path}" == "${sd}/" ]; then
# success if path starts with a system prefix
return 0
@@ -89,7 +89,7 @@ function system_dir {
return 1 # fail if path starts no system prefix
}
-for param in ${parameters[@]}; do
+for param in "${parameters[@]}"; do
if [[ -z ${!param} ]]; then
die "Spack compiler must be run from Spack! Input '$param' is missing."
fi
@@ -248,7 +248,6 @@ fi
# Save original command for debug logging
input_command="$*"
-args=()
#
# Parse the command line arguments.
@@ -277,7 +276,9 @@ libs=()
other_args=()
while [ -n "$1" ]; do
+ # an RPATH to be added after the case statement.
rp=""
+
case "$1" in
-I*)
arg="${1#-I}"
@@ -362,37 +363,53 @@ while [ -n "$1" ]; do
done
#
-# Prepend flags from Spack's cppflags, cflags, cxxflags, fcflags, fflags,
-# and ldflags.
+# Add flags from Spack's cppflags, cflags, cxxflags, fcflags, fflags, and
+# ldflags. We stick to the order that gmake puts the flags in by default.
+#
+# See the gmake manual on implicit rules for details:
+# https://www.gnu.org/software/make/manual/html_node/Implicit-Variables.html
#
+flags=()
-# Add ldflags
+# Fortran flags come before CPPFLAGS
case "$mode" in
- ld|ccld)
- args=(${SPACK_LDFLAGS[@]} "${args[@]}") ;;
+ cc|ccld)
+ case $lang_flags in
+ F)
+ flags=("${flags[@]}" "${SPACK_FFLAGS[@]}") ;;
+ esac
+ ;;
+esac
+
+# C preprocessor flags come before any C/CXX flags
+case "$mode" in
+ cpp|as|cc|ccld)
+ flags=("${flags[@]}" "${SPACK_CPPFLAGS[@]}") ;;
esac
-# Add C, C++, and Fortran flags
+
+# Add C and C++ flags
case "$mode" in
cc|ccld)
case $lang_flags in
C)
- args=(${SPACK_CFLAGS[@]} "${args[@]}") ;;
+ flags=("${flags[@]}" "${SPACK_CFLAGS[@]}") ;;
CXX)
- args=(${SPACK_CXXFLAGS[@]} "${args[@]}") ;;
- F)
- args=(${SPACK_FFLAGS[@]} "${args[@]}") ;;
+ flags=("${flags[@]}" "${SPACK_CXXFLAGS[@]}") ;;
esac
;;
esac
-# Add cppflags
+# Linker flags
case "$mode" in
- cpp|as|cc|ccld)
- args=(${SPACK_CPPFLAGS[@]} "${args[@]}") ;;
+ ld|ccld)
+ flags=("${flags[@]}" "${SPACK_LDFLAGS[@]}") ;;
esac
-# Include all -L's and prefix/whatever dirs in rpath
+
+# Include the package's prefix/lib[64] dirs in rpath. We don't know until
+# *after* installation which one's correct, so we include both lib and
+# lib64, assuming that only one will be present.
case "$mode" in
ld|ccld)
$add_rpaths && rpaths+=("$SPACK_PREFIX/lib")
@@ -400,10 +417,10 @@ case "$mode" in
;;
esac
-# Read spack dependencies from the path environment variable
+# Read spack dependencies from the environment. This is a list of prefixes.
IFS=':' read -ra deps <<< "$SPACK_DEPENDENCIES"
for dep in "${deps[@]}"; do
- # Append include directories
+ # Append include directories in any compilation mode
case "$mode" in
cpp|cc|as|ccld)
if [[ -d $dep/include ]]; then
@@ -412,7 +429,7 @@ for dep in "${deps[@]}"; do
;;
esac
- # Append lib/lib64 and RPATH directories
+ # Append lib/lib64 and RPATH directories, but only if we're linking
case "$mode" in
ld|ccld)
if [[ -d $dep/lib ]]; then
@@ -436,6 +453,7 @@ for dep in "${deps[@]}"; do
esac
done
+# add RPATHs if we're in in any linking mode
case "$mode" in
ld|ccld)
# Set extra RPATHs
@@ -446,14 +464,23 @@ case "$mode" in
done
# Add SPACK_LDLIBS to args
- for lib in ${SPACK_LDLIBS[@]}; do
+ for lib in "${SPACK_LDLIBS[@]}"; do
libs+=("${lib#-l}")
done
;;
esac
-# Put the arguments back together in one list
+#
+# Finally, reassemble the command line.
+#
+
# Includes and system includes first
+args=()
+
+# flags assembled earlier
+args+=("${flags[@]}")
+
+# include directory search paths
for dir in "${includes[@]}"; do args+=("-I$dir"); done
for dir in "${system_includes[@]}"; do args+=("-I$dir"); done
diff --git a/lib/spack/spack/test/cc.py b/lib/spack/spack/test/cc.py
index 517b7f1dd3..1e0ef31070 100644
--- a/lib/spack/spack/test/cc.py
+++ b/lib/spack/spack/test/cc.py
@@ -124,7 +124,7 @@ def wrapper_environment():
SPACK_DEBUG_LOG_ID='foo-hashabc',
SPACK_COMPILER_SPEC='gcc@4.4.7',
SPACK_SHORT_SPEC='foo@1.2 arch=linux-rhel6-x86_64 /hashabc',
- SPACK_SYSTEM_DIRS=' '.join(system_dirs),
+ SPACK_SYSTEM_DIRS=':'.join(system_dirs),
SPACK_CC_RPATH_ARG='-Wl,-rpath,',
SPACK_CXX_RPATH_ARG='-Wl,-rpath,',
SPACK_F77_RPATH_ARG='-Wl,-rpath,',
@@ -180,27 +180,27 @@ pytestmark = pytest.mark.usefixtures('wrapper_environment')
def check_cc(command, args, expected):
with set_env(SPACK_TEST_COMMAND=command):
- assert cc(*args, output=str).strip().split() == expected
+ assert expected == cc(*args, output=str).strip().split()
def check_cxx(command, args, expected):
with set_env(SPACK_TEST_COMMAND=command):
- assert cxx(*args, output=str).strip().split() == expected
+ assert expected == cxx(*args, output=str).strip().split()
def check_fc(command, args, expected):
with set_env(SPACK_TEST_COMMAND=command):
- assert fc(*args, output=str).strip().split() == expected
+ assert expected == fc(*args, output=str).strip().split()
def check_ld(command, args, expected):
with set_env(SPACK_TEST_COMMAND=command):
- assert ld(*args, output=str).strip().split() == expected
+ assert expected == ld(*args, output=str).strip().split()
def check_cpp(command, args, expected):
with set_env(SPACK_TEST_COMMAND=command):
- assert cpp(*args, output=str).strip().split() == expected
+ assert expected == cpp(*args, output=str).strip().split()
def test_vcheck_mode():
@@ -303,8 +303,8 @@ def test_fc_flags(wrapper_flags):
check_fc(
'dump-args', test_args,
[real_cc] +
- spack_cppflags +
spack_fflags +
+ spack_cppflags +
spack_ldflags +
test_include_paths +
test_library_paths +