build: make it easier to pass PORTABLE

Summary:
currently when running a portable build we have to do the following

  PORTABLE=1 make ...

this commit adds support for the following

  make PORTABLE=1 ...

this might be seem subtle but it makes PORTABLE like all other
makefile args and simplifies invocation from numerous build systems
including things like ExternalProject_Add in cmake.

Signed-off-by: Bassam Tabbara <bassam.tabbara@quantum.com>
Closes https://github.com/facebook/rocksdb/pull/1643

Differential Revision: D4315870

Pulled By: yiwu-arbug

fbshipit-source-id: ee43755
This commit is contained in:
Bassam Tabbara 2016-12-13 14:20:17 -08:00 committed by Facebook Github Bot
parent 67adc937b6
commit 6653e32ac2

View File

@ -140,7 +140,7 @@ endif
AM_LINK = $(AM_V_CCLD)$(CXX) $^ $(EXEC_LDFLAGS) -o $@ $(LDFLAGS) $(COVERAGEFLAGS)
# detect what platform we're building on
dummy := $(shell (export ROCKSDB_ROOT="$(CURDIR)"; "$(CURDIR)/build_tools/build_detect_platform" "$(CURDIR)/make_config.mk"))
dummy := $(shell (export ROCKSDB_ROOT="$(CURDIR)"; export PORTABLE="$(PORTABLE)"; "$(CURDIR)/build_tools/build_detect_platform" "$(CURDIR)/make_config.mk"))
# this file is generated by the previous line to set build flags and sources
include make_config.mk
CLEAN_FILES += make_config.mk