improve FreeBSD / generic posix support

(cherry picked from commit 6a62d30)
ref #18063

Conflicts:
	src/signals-unix.c

Not including changes to jl_call_in_ctx in this file because those
changes were part of #17727
which has not been backported to release-0.5 at this time.

Make.inc

@@ -340,6 +340,11 @@ endif
 
 STDLIBCPP_FLAG :=
 
+ifeq ($(OS), FreeBSD)
+USEGCC := 0
+USECLANG := 1
+endif
+
 ifeq ($(OS), Darwin)
 DARWINVER := $(shell uname -r | cut -b 1-2)
 DARWINVER_GTE13 := $(shell expr `uname -r | cut -b 1-2` \>= 13)

README.md

@@ -53,7 +53,7 @@ developers may find the notes in [CONTRIBUTING](https://github.com/JuliaLang/jul
 - **FreeBSD**
 - **Windows**
 
-All systems are supported with both x86/64 (64-bit) and x86 (32-bit) architectures. Experimental and early support for [ARM](https://github.com/JuliaLang/julia/blob/master/README.arm.md) is available too.
+All systems are supported with both x86/64 (64-bit) and x86 (32-bit) architectures. Experimental and early support for [ARM](https://github.com/JuliaLang/julia/blob/master/README.arm.md), AARCH64, and POWER (little-endian) is available too.
 
 <a name="Source-Download-and-Compilation"/>
 ## Source Download and Compilation
@@ -235,12 +235,22 @@ When building Julia, or its dependencies, libraries installed by third party pac
 
 ### FreeBSD
 
-On *FreeBSD Release 9.0*, install the `gcc47`, `git`, and `gmake` packages/ports, and compile Julia with the command:
+On *FreeBSD Release 11.0*, install the gfortran, git, cmake, and gmake packages/ports (`pkg install gcc6 gmake git cmake`), and compile Julia with the command:
 
-    $ gmake FC=gfortran47
+    $ echo 'FC=gfortran6' >> Make.user
+    $ gmake
 
 You must use the `gmake` command on FreeBSD instead of `make`.
 
+Note that Julia is community-supported and we have little control over our upstream dependencies, you may still run into issues with its dependencies and YMMV. Current known issues includes:
+
+ - The x86 arch doesn't support threading due to lack of compiler runtime library support (set JULIA_THREADS=0).
+ - libunwind needs a small patch to its tests to compile.
+ - OpenBLAS patches in pkg haven't been upstreamed.
+ - gfortran can't link binaries. Set `FFLAGS=-Wl,-rpath,/usr/local/lib/gcc6` to workaround this (upstream bug submitted to FreeBSD pkg maintainers).
+ - System libraries installed by pkg are not on the compiler path by default. You may need to add `LDFLAGS=/usr/local/lib` and `CPPFLAGS=/usr/local/include` to your environment or Make.user file to build successfully.
+
+
 ### Windows
 
 In order to build Julia on Windows, see [README.windows](https://github.com/JuliaLang/julia/blob/master/README.windows.md).

deps/checksums/libuv-8d5131b6c1595920dd30644cd1435b4f344b46c8.tar.gz/md5

@@ -0,0 +1 @@
+4c91d4c9161555c911630b0a70ddec03

deps/checksums/libuv-8d5131b6c1595920dd30644cd1435b4f344b46c8.tar.gz/sha512

@@ -0,0 +1 @@
+c53513a5aea84405bf302b084a23f24f54148aac90a2bd666219ce14879723baab959942934d0d801a4572fffd07e60a7d574ade8d7eb57b6da8216063c20a48

deps/libgit2.mk

@@ -47,9 +47,14 @@ ifeq ($(OS),Linux)
 $(BUILDDIR)/$(LIBGIT2_SRC_DIR)/Makefile: $(SRCDIR)/srccache/$(LIBGIT2_SRC_DIR)/libgit2-require-openssl.patch-applied $(SRCDIR)/srccache/$(LIBGIT2_SRC_DIR)/libgit2-openssl-hang.patch-applied
 endif
 ifneq ($(OS),WINNT)
+ifeq ($(USE_SYSTEM_CURL), 0)
 $(BUILDDIR)/$(LIBGIT2_SRC_DIR)/Makefile: $(CURL_OBJ_TARGET)
 endif
-$(BUILDDIR)/$(LIBGIT2_SRC_DIR)/Makefile: $(SRCDIR)/srccache/$(LIBGIT2_SRC_DIR)/CMakeLists.txt $(SRCDIR)/srccache/$(LIBGIT2_SRC_DIR)/libgit2-ssh.patch-applied $(SRCDIR)/srccache/$(LIBGIT2_SRC_DIR)/libgit2-agent-nonfatal.patch-applied $(LIBSSH2_OBJ_TARGET)
+endif
+ifeq ($(USE_SYSTEM_LIBSSH2), 0)
+$(BUILDDIR)/$(LIBGIT2_SRC_DIR)/Makefile: $(LIBSSH2_OBJ_TARGET)
+endif
+$(BUILDDIR)/$(LIBGIT2_SRC_DIR)/Makefile: $(SRCDIR)/srccache/$(LIBGIT2_SRC_DIR)/CMakeLists.txt $(SRCDIR)/srccache/$(LIBGIT2_SRC_DIR)/libgit2-ssh.patch-applied $(SRCDIR)/srccache/$(LIBGIT2_SRC_DIR)/libgit2-agent-nonfatal.patch-applied
 	mkdir -p $(dir $@)
 	cd $(dir $@) && \
 	$(CMAKE) $(dir $<) $(LIBGIT2_OPTS)

deps/libuv.version

@@ -1,2 +1,2 @@
 LIBUV_BRANCH=julia-uv1.9.0
-LIBUV_SHA1=28743d6091531340cfe316de2b2d385fe1778ff5
+LIBUV_SHA1=8d5131b6c1595920dd30644cd1435b4f344b46c8

src/cgmemmgr.cpp

@@ -47,7 +47,7 @@ static void *map_anon_page(size_t size)
     mem = (char*)LLT_ALIGN(uintptr_t(mem), jl_page_size);
 #else // _OS_WINDOWS_
     void *mem = mmap(nullptr, size, PROT_READ | PROT_WRITE,
-                     MAP_NORESERVE | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+                     MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
     assert(mem != MAP_FAILED && "Cannot allocate RW memory");
 #endif // _OS_WINDOWS_
     return mem;

src/flisp/Makefile

@@ -77,10 +77,10 @@ CCLD := $(LD)
 endif
 
 $(BUILDDIR)/$(EXENAME)-debug: $(DOBJS) $(LIBFILES_debug) $(BUILDDIR)/$(LIBTARGET)-debug.a $(BUILDDIR)/flmain.dbg.obj | $(BUILDDIR)/flisp.boot
-	@$(call PRINT_LINK, $(CCLD) $(DEBUGFLAGS) $(DOBJS) $(BUILDDIR)/flmain.dbg.obj -o $@ $(BUILDDIR)/$(LIBTARGET)-debug.a $(LIBFILES_debug) $(LIBS) $(OSLIBS))
+	@$(call PRINT_LINK, $(CCLD) $(DEBUGFLAGS) $(LDFLAGS) $(DOBJS) $(BUILDDIR)/flmain.dbg.obj -o $@ $(BUILDDIR)/$(LIBTARGET)-debug.a $(LIBFILES_debug) $(LIBS) $(OSLIBS))
 
 $(BUILDDIR)/$(EXENAME): $(OBJS) $(LIBFILES_release) $(BUILDDIR)/$(LIBTARGET).a $(BUILDDIR)/flmain.o | $(BUILDDIR)/flisp.boot
-	@$(call PRINT_LINK, $(CCLD) $(SHIPFLAGS) $(OBJS) $(BUILDDIR)/flmain.o -o $@ $(BUILDDIR)/$(LIBTARGET).a $(LIBFILES_release) $(LIBS) $(OSLIBS))
+	@$(call PRINT_LINK, $(CCLD) $(SHIPFLAGS) $(LDFLAGS) $(OBJS) $(BUILDDIR)/flmain.o -o $@ $(BUILDDIR)/$(LIBTARGET).a $(LIBFILES_release) $(LIBS) $(OSLIBS))
 
 ifneq ($(BUILDDIR),.)
 $(BUILDDIR)/flisp.boot: flisp.boot

src/gc-pages.c

@@ -37,6 +37,10 @@ void jl_gc_init_page(void)
 #endif
 }
 
+#ifndef MAP_NORESERVE // not defined in POSIX, FreeBSD, etc.
+#define MAP_NORESERVE (0)
+#endif
+
 // Try to allocate a memory block for a region with `pg_cnt` pages.
 // Return `NULL` if allocation failed. Result is aligned to `GC_PAGE_SZ`.
 static char *jl_gc_try_alloc_region(int pg_cnt)

src/gc.c

@@ -618,7 +618,11 @@ JL_DLLEXPORT jl_value_t *jl_gc_big_alloc(jl_ptls_t ptls, size_t sz)
     bigval_t *v = (bigval_t*)malloc_cache_align(allocsz);
     if (v == NULL)
         jl_throw(jl_memory_exception);
+#ifdef JULIA_ENABLE_THREADING
     jl_atomic_fetch_add(&gc_num.allocd, allocsz);
+#else
+    gc_num.allocd += allocsz;
+#endif
     gc_num.bigalloc++;
 #ifdef MEMDEBUG
     memset(v, 0xee, allocsz);
@@ -1596,7 +1600,7 @@ static void post_mark(arraylist_t *list)
 }
 
 // collector entry point and control
-static volatile uint64_t jl_gc_disable_counter = 0;
+static volatile uint32_t jl_gc_disable_counter = 0;
 
 JL_DLLEXPORT int jl_gc_enable(int on)
 {
@@ -2087,7 +2091,7 @@ void *jl_gc_perm_alloc_nolock(size_t sz)
         pool = (void*)LLT_ALIGN((uintptr_t)pool, JL_SMALL_BYTE_ALIGNMENT);
 #else
         void *pool = mmap(0, GC_PERM_POOL_SIZE, PROT_READ | PROT_WRITE,
-                          MAP_NORESERVE | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+                          MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
         if (__unlikely(pool == MAP_FAILED))
             return NULL;
 #endif

src/julia_threads.h

@@ -159,7 +159,7 @@ static inline unsigned long JL_CONST_FUNC jl_thread_self(void)
  *     2. (most importantly) we need interoperability between code written
  *        in different languages.
  *        The current c++ standard (c++14) does not allow using c11 atomic
- *        functions or types and there's currently no grantee that the two
+ *        functions or types and there's currently no guarantee that the two
  *        types are compatible (although most of them probably are).
  *        We also need to access these atomic variables from the LLVM JIT code
  *        which is very hard unless the layout of the object is fully

src/safepoint.c

@@ -93,7 +93,7 @@ void jl_safepoint_init(void)
     char *addr = (char*)VirtualAlloc(NULL, pgsz * 3, MEM_COMMIT, PAGE_READONLY);
 #else
     char *addr = (char*)mmap(0, pgsz * 3, PROT_READ,
-                             MAP_NORESERVE | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+                             MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
     if (addr == MAP_FAILED)
         addr = NULL;
 #endif

src/signals-unix.c

@@ -315,7 +315,7 @@ static void *alloc_sigstack(size_t size)
     // Add one guard page to catch stack overflow in the signal handler
     size = LLT_ALIGN(size, pagesz) + pagesz;
     void *stackbuff = mmap(0, size, PROT_READ | PROT_WRITE,
-                           MAP_NORESERVE | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+                           MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
     if (stackbuff == MAP_FAILED)
         jl_errorf("fatal error allocating signal stack: mmap: %s",
                   strerror(errno));

src/task.c

@@ -353,7 +353,7 @@ static void ctx_switch(jl_ptls_t ptls, jl_task_t *t, jl_jmp_buf *where)
                 " push %%ebp;\n" // instead of ESP
                 " jmp %P1;\n" // call `start_task` with fake stack frame
                 " ud2"
-                : : "r" (stackbase), ""(&start_task) : "memory" );
+                : : "r" (stackbase), "X"(&start_task) : "memory" );
 #elif defined(_CPU_AARCH64_)
             asm(" mov sp, %0;\n"
                 " mov x29, xzr;\n" // Clear link register (x29) and frame pointer