leveldb: Update to 1.20

Add gperftools dependency.

Closes: https://trac.macports.org/ticket/55584

Honor cxx_stdlib.

Closes: https://trac.macports.org/ticket/53104

databases/leveldb/Portfile

@@ -14,40 +14,49 @@ PortGroup           github 1.0
 # We therefore use muniversal PortGroup
 PortGroup           muniversal 1.0
 
-github.setup        google leveldb 1.19 v
-revision            1
+github.setup        google leveldb 1.20 v
 categories          databases
 platforms           darwin
 license             BSD
 maintainers         nomaintainer
 description         A fast and lightweight key/value database library by Google
 long_description    A fast and lightweight key/value database library by Google
 
-checksums           rmd160  9586c14604093fe2ca855539f7d69ce55c999da5 \
-                    sha256  6835203e749f7f437f87f7fb788e96d0718f62ca28c0160a35f48d1ba17a8e7b
+checksums           rmd160  dd72b89d356031709df9a41da2c31ea2e093361d \
+                    sha256  154d804980d92b08d08dafff8e937ad79a45ef0fe87c9f5d69ea74690f85a933 \
+                    size    223200
 
-depends_lib         port:snappy
+depends_lib         port:snappy \
+                    port:gperftools
 
 patchfiles          install_name.patch
 
 use_configure       no
 
+if {[string match *clang* ${configure.cxx}]} {
+    configure.cxxflags-append -stdlib=${configure.cxx_stdlib}
+    configure.ldflags-append -stdlib=${configure.cxx_stdlib}
+}
+
 if { [variant_isset universal] } {
     foreach arch ${configure.universal_archs} {
-        set merger_build_env(${arch}) "CFLAGS=\"-arch ${arch}\" CXXFLAGS=\"-arch ${arch}\" LDFLAGS=\"-arch ${arch} -L${prefix}/lib\""
+        lappend merger_build_env(${arch}) \
+            CFLAGS="${configure.cflags} -arch ${arch}" \
+            CXXFLAGS="${configure.cxxflags} -arch ${arch}" \
+            LDFLAGS="${configure.ldflags} -arch ${arch}"
     }
 } else {
     build.env-append \
-        CFLAGS="[get_canonical_archflags cc]" \
-        CXXFLAGS="[get_canonical_archflags cxx]" \
-        LDFLAGS="[get_canonical_archflags ld] -L${prefix}/lib"
+            CFLAGS="${configure.cflags} [get_canonical_archflags cc]" \
+            CXXFLAGS="${configure.cxxflags} [get_canonical_archflags cxx]" \
+            LDFLAGS="${configure.ldflags} [get_canonical_archflags ld]"
 }
 
 build.env-append                          \
     INSTALL_PATH=${prefix}/lib            \
     CC="${configure.cc}"                  \
     CXX="${configure.cxx}"                \
-    OPT="${configure.optflags} -DNDEBUG"
+    OPT="-DNDEBUG"
 
 # muniversal build requires Makefile
 post-extract {

databases/leveldb/files/install_name.patch

@@ -1,7 +1,7 @@
 https://github.com/google/leveldb/issues/412
 https://github.com/google/leveldb/pull/413
---- build_detect_platform.orig	2016-08-11 09:33:30.000000000 -0500
-+++ build_detect_platform	2016-10-16 16:31:41.000000000 -0500
+--- build_detect_platform.orig	2017-03-01 18:08:02.000000000 -0600
++++ build_detect_platform	2018-03-09 17:08:26.000000000 -0600
 @@ -8,7 +8,10 @@
  #   CXX                         C++ Compiler path
  #   PLATFORM_LDFLAGS            Linker flags
@@ -25,7 +25,7 @@ https://github.com/google/leveldb/pull/413
  PLATFORM_SHARED_LDFLAGS="-shared -Wl,-soname -Wl,"
  PLATFORM_SHARED_CFLAGS="-fPIC"
  PLATFORM_SHARED_VERSIONED=true
-@@ -81,7 +86,8 @@
+@@ -83,7 +88,8 @@
      Darwin)
          PLATFORM=OS_MACOSX
          COMMON_FLAGS="$MEMCMP_FLAG -DOS_MACOSX"
@@ -35,27 +35,27 @@ https://github.com/google/leveldb/pull/413
          [ -z "$INSTALL_PATH" ] && INSTALL_PATH=`pwd`
          PLATFORM_SHARED_LDFLAGS="-dynamiclib -install_name $INSTALL_PATH/"
          PORT_FILE=port/port_posix.cc
-@@ -142,7 +148,7 @@
-         COMMON_FLAGS="$MEMCMP_FLAG -DOS_MACOSX"
+@@ -154,7 +160,7 @@
          [ -z "$INSTALL_PATH" ] && INSTALL_PATH=`pwd`
          PORT_FILE=port/port_posix.cc
+         PORT_SSE_FILE=port/port_posix_sse.cc
 -        PLATFORM_SHARED_EXT=
 +        PLATFORM_SHARED=false
          PLATFORM_SHARED_LDFLAGS=
          PLATFORM_SHARED_CFLAGS=
          PLATFORM_SHARED_VERSIONED=
-@@ -222,6 +228,8 @@
- echo "PLATFORM_LIBS=$PLATFORM_LIBS" >> $OUTPUT
+@@ -250,6 +256,8 @@
  echo "PLATFORM_CCFLAGS=$PLATFORM_CCFLAGS" >> $OUTPUT
  echo "PLATFORM_CXXFLAGS=$PLATFORM_CXXFLAGS" >> $OUTPUT
+ echo "PLATFORM_SSEFLAGS=$PLATFORM_SSEFLAGS" >> $OUTPUT
 +echo "PLATFORM_SHARED=$PLATFORM_SHARED" >> $OUTPUT
 +echo "PLATFORM_SHARED_BASE=$PLATFORM_SHARED_BASE" >> $OUTPUT
  echo "PLATFORM_SHARED_CFLAGS=$PLATFORM_SHARED_CFLAGS" >> $OUTPUT
  echo "PLATFORM_SHARED_EXT=$PLATFORM_SHARED_EXT" >> $OUTPUT
  echo "PLATFORM_SHARED_LDFLAGS=$PLATFORM_SHARED_LDFLAGS" >> $OUTPUT
---- Makefile.orig	2016-08-11 09:33:30.000000000 -0500
-+++ Makefile	2016-10-16 16:41:58.000000000 -0500
-@@ -107,13 +107,13 @@
+--- Makefile.orig	2017-03-01 18:08:02.000000000 -0600
++++ Makefile	2018-03-09 17:14:53.000000000 -0600
+@@ -108,13 +108,13 @@
  default: all
 
  # Should we build shared libraries?
@@ -71,10 +71,10 @@ https://github.com/google/leveldb/pull/413
  SHARED_LIB2 = $(SHARED_LIB1)
  SHARED_LIB3 = $(SHARED_LIB1)
  SHARED_LIBS = $(SHARED_LIB1)
-@@ -122,9 +122,8 @@
+@@ -123,9 +123,8 @@
  # Update db.h if you change these.
  SHARED_VERSION_MAJOR = 1
- SHARED_VERSION_MINOR = 19
+ SHARED_VERSION_MINOR = 20
 -SHARED_LIB1 = libleveldb.$(PLATFORM_SHARED_EXT)
 -SHARED_LIB2 = $(SHARED_LIB1).$(SHARED_VERSION_MAJOR)
 -SHARED_LIB3 = $(SHARED_LIB1).$(SHARED_VERSION_MAJOR).$(SHARED_VERSION_MINOR)
@@ -83,7 +83,7 @@ https://github.com/google/leveldb/pull/413
  SHARED_LIBS = $(SHARED_OUTDIR)/$(SHARED_LIB1) $(SHARED_OUTDIR)/$(SHARED_LIB2) $(SHARED_OUTDIR)/$(SHARED_LIB3)
  $(SHARED_OUTDIR)/$(SHARED_LIB1): $(SHARED_OUTDIR)/$(SHARED_LIB3)
  	ln -fs $(SHARED_LIB3) $(SHARED_OUTDIR)/$(SHARED_LIB1)
-@@ -136,7 +136,7 @@
+@@ -137,7 +136,7 @@
  $(SHARED_OUTDIR)/$(SHARED_LIB3): $(SHARED_LIBOBJECTS)
  	$(CXX) $(LDFLAGS) $(PLATFORM_SHARED_LDFLAGS)$(SHARED_LIB2) $(SHARED_LIBOBJECTS) -o $(SHARED_OUTDIR)/$(SHARED_LIB3) $(LIBS)