sys-devel/mold: add live ebuild

Signed-off-by: Sam James <sam@gentoo.org>

2 files changed, 105 insertions, 0 deletions

diff --git a/sys-devel/mold/files/mold-9999-build-respect-user-FLAGS.patch b/sys-devel/mold/files/mold-9999-build-respect-user-FLAGS.patch
new file mode 100644
index 000000000000..ac218201b902
--- /dev/null
+++ b/sys-devel/mold/files/mold-9999-build-respect-user-FLAGS.patch
@@ -0,0 +1,83 @@
+https://github.com/rui314/mold/pull/135
+
+From: Sam James <sam@gentoo.org>
+Date: Tue, 14 Dec 2021 10:53:44 +0000
+Subject: [PATCH 1/2] build: respect user *FLAGS
+
+- Respect user CXXFLAGS
+- Rename CPPFLAGS (previously used in the sense of "flags for the C++ compiler") -> CXXFLAGS
+- CPPFLAGS is generally used for "flags for the C(++) preprocessor.", so let's
+  use it for that
+- Respect user LDFLAGS
+  (In one instance, we were respecting LDFLAGS, but doing it too late.
+  We need to pass LDFLAGS _before_ any objects in order for -Wl,--as-needed
+  to work correctly.)
+
+Signed-off-by: Sam James <sam@gentoo.org>
+--- a/Makefile
++++ b/Makefile
+@@ -17,10 +17,15 @@ STRIP ?= strip
+ 
+ OS ?= $(shell uname -s)
+ 
+-CPPFLAGS = -pthread -std=c++20 -fPIE -DMOLD_VERSION=\"0.9.6\" \
+-	   -fno-exceptions -fno-unwind-tables -fno-asynchronous-unwind-tables \
+-	   -DLIBDIR="\"$(LIBDIR)\"" $(EXTRA_CPPFLAGS)
+-LDFLAGS += $(EXTRA_LDFLAGS)
++# Used for both C and C++
++COMMON_FLAGS = -pthread -fPIE -fno-exceptions -fno-unwind-tables -fno-asynchronous-unwind-tables
++
++CFLAGS ?= -O2
++CFLAGS += $(COMMON_FLAGS)
++
++CXXFLAGS ?= -O2
++CXXFLAGS += $(COMMON_FLAGS) -std=c++20
++CPPFLAGS += -DMOLD_VERSION=\"0.9.6\" -DLIBDIR="\"$(LIBDIR)\""
+ LIBS = -pthread -lz -lxxhash -ldl -lm
+ 
+ SRCS=$(wildcard *.cc elf/*.cc macho/*.cc)
+@@ -38,21 +43,19 @@ ifneq ($(GIT_HASH),)
+ endif
+ 
+ ifeq ($(DEBUG), 1)
+-  CPPFLAGS += -O0 -g
+-else
+-  CPPFLAGS += -O2
++  CXXFLAGS += -O0 -g
+ endif
+ 
+ ifeq ($(LTO), 1)
+-  CPPFLAGS += -flto -O3
++  CXXFLAGS += -flto -O3
+   LDFLAGS  += -flto
+ endif
+ 
+ ifeq ($(ASAN), 1)
+-  CPPFLAGS += -fsanitize=address
++  CXXFLAGS += -fsanitize=address
+   LDFLAGS  += -fsanitize=address
+ else ifeq ($(TSAN), 1)
+-  CPPFLAGS += -fsanitize=thread
++  CXXFLAGS += -fsanitize=thread
+   LDFLAGS  += -fsanitize=thread
+ else ifneq ($(OS), Darwin)
+   # By default, we want to use mimalloc as a memory allocator.
+@@ -89,15 +92,15 @@ endif
+ all: mold mold-wrapper.so
+ 
+ mold: $(OBJS) $(MIMALLOC_LIB) $(TBB_LIB)
+-	$(CXX) $(CPPFLAGS) $(OBJS) -o $@ $(LDFLAGS) $(LIBS)
++	$(CXX) $(CPPFLAGS) $(CXXFLAGS) $(LDFLAGS) $(OBJS) -o $@ $(LIBS)
+ 	ln -sf mold ld
+ 	ln -sf mold ld64.mold
+ 
+ mold-wrapper.so: elf/mold-wrapper.c Makefile
+-	$(CC) -fPIC -shared -o $@ $< -ldl
++	$(CC) $(CPPFLAGS) $(CFLAGS) -fPIC -shared -o $@ $(LDFLAGS) $< -ldl
+ 
+ out/%.o: %.cc $(HEADERS) Makefile out/elf/.keep out/macho/.keep
+-	$(CXX) $(CPPFLAGS) -c -o $@ $<
++	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c -o $@ $<
+ 
+ out/elf/.keep:
+ 	mkdir -p out/elf
diff --git a/sys-devel/mold/files/mold-9999-don-t-compress-man-page.patch b/sys-devel/mold/files/mold-9999-don-t-compress-man-page.patch
new file mode 100644
index 000000000000..23dd705b553a
--- /dev/null
+++ b/sys-devel/mold/files/mold-9999-don-t-compress-man-page.patch
@@ -0,0 +1,22 @@
+https://github.com/rui314/mold/pull/135
+
+From: Sam James <sam@gentoo.org>
+Date: Tue, 14 Dec 2021 11:01:19 +0000
+Subject: [PATCH 2/2] build: don't compress man page
+
+Negligible saving and downstream, distributions usually recompress or
+compress with their own specific options. Unconditionally compressing
+man pages, while well intended, usually creates more hassle there.
+
+Signed-off-by: Sam James <sam@gentoo.org>
+--- a/Makefile
++++ b/Makefile
+@@ -140,8 +140,6 @@ install: all
+ 
+ 	install -m 755 -d $D$(MANDIR)/man1
+ 	install -m 644 docs/mold.1 $D$(MANDIR)/man1
+-	rm -f $D$(MANDIR)/man1/mold.1.gz
+-	gzip -9 $D$(MANDIR)/man1/mold.1
+ 
+ 	ln -sf mold $D$(BINDIR)/ld.mold
+ 	ln -sf mold $D$(BINDIR)/ld64.mold