Remove SPACK_COMPILER_SPEC from the environment

lib/spack/env/cc

@@ -39,7 +39,6 @@ readonly params="\
 SPACK_ENV_PATH
 SPACK_DEBUG_LOG_DIR
 SPACK_DEBUG_LOG_ID
-SPACK_COMPILER_SPEC
 SPACK_LINKER_ARG
 SPACK_SHORT_SPEC
 SPACK_SYSTEM_DIRS
@@ -218,7 +217,6 @@ for param in $params; do
     if eval "test -z \"\${${param}:-}\""; then
         die "Spack compiler must be run from Spack! Input '$param' is missing."
     fi
-    # FIXME (compiler as nodes) add checks on whether `SPACK_XX_RPATH` is set if `SPACK_XX` is set
 done
 
 # eval this because SPACK_MANAGED_DIRS and SPACK_SYSTEM_DIRS are inputs we don't wanna loop over.
@@ -411,13 +409,6 @@ if [ "$SPACK_TEST_COMMAND" = "dump-mode" ]; then
     exit
 fi
 
-# If, say, SPACK_CC is set but SPACK_FC is not, we want to know. Compilers do not
-# *have* to set up Fortran executables, so we need to tell the user when a build is
-# about to attempt to use them unsuccessfully.
-if [ -z "$command" ]; then
-    die "Compiler '$SPACK_COMPILER_SPEC' does not have a $language compiler configured."
-fi
-
 #
 # Filter '.' and Spack environment directories out of PATH so that
 # this script doesn't just call itself

lib/spack/spack/build_systems/compiler.py

@@ -273,8 +273,6 @@ def setup_dependent_build_environment(self, env, dependent_spec):
             env.set("SPACK_DTAGS_TO_ADD", self.enable_new_dtags)
 
         spec = self.spec
-        env.set("SPACK_COMPILER_SPEC", spec.format("{name}{@version}{variants}{/hash:7}"))
-
         if spec.extra_attributes:
             extra_rpaths = spec.extra_attributes.get("extra_rpaths")
             if extra_rpaths:

lib/spack/spack/test/build_environment.py

@@ -57,7 +57,6 @@ def build_environment(working_env):
     os.environ["SPACK_ENV_PATH"] = "test"
     os.environ["SPACK_DEBUG_LOG_DIR"] = "."
     os.environ["SPACK_DEBUG_LOG_ID"] = "foo-hashabc"
-    os.environ["SPACK_COMPILER_SPEC"] = "gcc@4.4.7"
     os.environ["SPACK_SHORT_SPEC"] = "foo@1.2 arch=linux-rhel6-x86_64 /hashabc"
 
     os.environ["SPACK_CC_RPATH_ARG"] = "-Wl,-rpath,"
@@ -83,7 +82,6 @@ def build_environment(working_env):
         "SPACK_PREFIX",
         "SPACK_ENV_PATH",
         "SPACK_DEBUG_LOG_DIR",
-        "SPACK_COMPILER_SPEC",
         "SPACK_SHORT_SPEC",
         "SPACK_CC_RPATH_ARG",
         "SPACK_CXX_RPATH_ARG",

lib/spack/spack/test/cc.py

@@ -156,7 +156,6 @@ def wrapper_environment(working_env):
         SPACK_ENV_PATH="test",
         SPACK_DEBUG_LOG_DIR=".",
         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=SYSTEM_DIR_CASE_ENTRY,
         SPACK_MANAGED_DIRS="/path/to/spack-1/opt/spack/*|/path/to/spack-2/opt/spack/*",