Compile RangeSse42.cpp with -msse4.2

Summary:
Solves #509 by creating a libtool convenience library that's compiled with -msse4.2.
Closes https://github.com/facebook/folly/pull/510

Differential Revision: D4120400

Pulled By: yfeldblum

fbshipit-source-id: bf5d937dc37ef8707e755c89f1883d65b4d21b0f

diff --git a/folly/Makefile.am b/folly/Makefile.am
index 0ba093ff9023a796c735cdb5ccfa7dbb54b34f3f..f93b751877fbe15c102b826b7122763dd02272cb 100644 (file)
--- a/folly/Makefile.am
+++ b/folly/Makefile.am
@@ -13,6 +13,7 @@ generate_fingerprint_tables_SOURCES = build/GenerateFingerprintTables.cpp
 generate_fingerprint_tables_LDADD = libfollybase.la
 
 noinst_LTLIBRARIES = \
+       libfollybasesse42.la \
        libfollybase.la
 
 lib_LTLIBRARIES = \
@@ -379,11 +380,13 @@ GroupVarintTables.cpp: build/generate_varint_tables.py
        $(PYTHON) build/generate_varint_tables.py
 CLEANFILES += GroupVarintTables.cpp
 
+libfollybasesse42_la_SOURCES = \
+       detail/RangeSse42.cpp
+
 libfollybase_la_SOURCES = \
        Conv.cpp \
        Demangle.cpp \
        detail/RangeCommon.cpp \
-       detail/RangeSse42.cpp \
        EscapeTables.cpp \
        Format.cpp \
        FormatTables.cpp \
@@ -556,6 +559,10 @@ libfolly_la_SOURCES += \
        fibers/TimeoutController.cpp
 endif
 
+libfollybasesse42_la_LDFLAGS = $(AM_LDFLAGS) -version-info $(LT_VERSION)
+libfollybasesse42_la_CXXFLAGS = -msse4.2
+
+libfollybase_la_LIBADD = libfollybasesse42.la
 libfollybase_la_LDFLAGS = $(AM_LDFLAGS) -version-info $(LT_VERSION)
 
 libfolly_la_LIBADD = libfollybase.la