Remove OpenLibm and leverage native Julia implementations

Link to the system libm

Author: ViralBShah

Make.inc

@@ -45,9 +45,6 @@ USE_SYSTEM_LLVM:=0
 USE_SYSTEM_LIBUNWIND:=0
 DISABLE_LIBUNWIND:=0
 USE_SYSTEM_PCRE:=0
-USE_SYSTEM_LIBM:=0
-USE_SYSTEM_OPENLIBM:=0
-UNTRUSTED_SYSTEM_LIBM:=0
 USE_SYSTEM_DSFMT:=0
 USE_SYSTEM_LIBBLASTRAMPOLINE:=0
 USE_SYSTEM_BLAS:=0
@@ -1177,14 +1174,6 @@ LIBLAPACKNAME := liblapack
 endif
 endif
 
-ifeq ($(USE_SYSTEM_LIBM), 1)
-LIBM := -lm
-LIBMNAME := libm
-else
-LIBM := -lopenlibm
-LIBMNAME := libopenlibm
-endif
-
 ifeq ($(USE_SYSTEM_LIBUV), 1)
   LIBUV := $(LOCALBASE)/lib/libuv-julia.a
   LIBUV_INC := $(LOCALBASE)/include
@@ -1268,7 +1257,7 @@ CSL_NEXT_GLIBCXX_VERSION=GLIBCXX_3\.4\.33|GLIBCXX_3\.5\.|GLIBCXX_4\.
 # Note: we explicitly _do not_ define `CSL` here, since it requires some more
 # advanced techniques to decide whether it should be installed from a BB source
 # or not.  See `deps/csl.mk` for more detail.
-BB_PROJECTS := BLASTRAMPOLINE OPENBLAS LLVM LIBSUITESPARSE OPENLIBM GMP MBEDTLS LIBSSH2 NGHTTP2 MPFR CURL LIBGIT2 PCRE LIBUV LIBUNWIND DSFMT OBJCONV ZLIB P7ZIP LLD LIBTRACYCLIENT
+BB_PROJECTS := BLASTRAMPOLINE OPENBLAS LLVM LIBSUITESPARSE GMP MBEDTLS LIBSSH2 NGHTTP2 MPFR CURL LIBGIT2 PCRE LIBUV LIBUNWIND DSFMT OBJCONV ZLIB P7ZIP LLD LIBTRACYCLIENT
 define SET_BB_DEFAULT
 # First, check to see if BB is disabled on a global setting
 ifeq ($$(USE_BINARYBUILDER),0)
@@ -1398,7 +1387,6 @@ ifeq ($(ARCH),i686)
 JLDFLAGS += -Wl,--large-address-aware
 endif
 JCPPFLAGS += -D_WIN32_WINNT=0x0502
-UNTRUSTED_SYSTEM_LIBM := 1
 # Use hard links for files on windows, rather than soft links
 #   https://stackoverflow.com/questions/3648819/how-to-make-a-symbolic-link-with-cygwin-in-windows-7
 # Usage: $(WIN_MAKE_HARD_LINK) <source> <target>
@@ -1473,12 +1461,6 @@ USE_BINARYBUILDER_OPENBLAS := 0
 USE_BINARYBUILDER_LIBSUITESPARSE := 0
 endif
 
-ifeq ($(USE_SYSTEM_LIBM),1)
-# If we're using system libm, disable BB OpenLibm
-USE_BINARYBUILDER_OPENLIBM := 0
-endif
-
-
 # Note: we're passing *FLAGS here computed based on your system compiler to
 # clang. If that causes you problems, you might want to build and/or run
 # specific clang-sa-* files with clang explicitly selected:
@@ -1634,20 +1616,13 @@ endif
 LIBSTDCXX_INSTALL_DEPLIB := $(call dep_lib_path,$(libdir),$(private_shlibdir)/$(LIBSTDCXX_NAME))
 endif
 
-
-# USE_SYSTEM_LIBM and USE_SYSTEM_OPENLIBM causes it to get symlinked into build_private_shlibdir
-ifeq ($(USE_SYSTEM_LIBM),1)
-LIBM_BUILD_DEPLIB := $(call dep_lib_path,$(build_libdir),$(build_private_shlibdir)/$(LIBMNAME).$(SHLIB_EXT))
-else ifeq ($(USE_SYSTEM_OPENLIBM),1)
-LIBM_BUILD_DEPLIB := $(call dep_lib_path,$(build_libdir),$(build_private_shlibdir)/$(LIBMNAME).$(SHLIB_EXT))
-else
-LIBM_BUILD_DEPLIB := $(call dep_lib_path,$(build_libdir),$(build_shlibdir)/$(LIBMNAME).$(SHLIB_EXT))
-endif
-LIBM_INSTALL_DEPLIB := $(call dep_lib_path,$(libdir),$(private_shlibdir)/$(LIBMNAME).$(SHLIB_EXT))
+# Symlink system libm
+LIBMNAME := libm
+#LIBM_BUILD_DEPLIB := $(call dep_lib_path,$(build_libdir),$(build_shlibdir)/$(LIBMNAME).$(SHLIB_EXT))
+#LIBM_INSTALL_DEPLIB := $(call dep_lib_path,$(libdir),$(private_shlibdir)/$(LIBMNAME).$(SHLIB_EXT))
 
 # We list:
 #  * libgcc_s, because FreeBSD needs to load ours, not the system one.
-#  * libopenlibm, because Windows has an untrustworthy libm, and we want to use ours more than theirs
 #  * libstdc++, because while performing `libstdc++` probing we need to
 #    know the path to the bundled `libstdc++` library.
 #  * libjulia-internal, which must always come second-to-last.
@@ -1669,30 +1644,26 @@ endef
 
 LOADER_BUILD_DEP_LIBS = $(call build_deplibs, \
     $(LIBGCC_BUILD_DEPLIB) \
-    $(LIBM_BUILD_DEPLIB) \
     @$(LIBSTDCXX_BUILD_DEPLIB) \
     @$(LIBJULIAINTERNAL_BUILD_DEPLIB) \
     @$(LIBJULIACODEGEN_BUILD_DEPLIB) \
 )
 
 LOADER_DEBUG_BUILD_DEP_LIBS = $(call build_deplibs, \
    $(LIBGCC_BUILD_DEPLIB) \
-   $(LIBM_BUILD_DEPLIB) \
    @$(LIBSTDCXX_BUILD_DEPLIB) \
    @$(LIBJULIAINTERNAL_DEBUG_BUILD_DEPLIB) \
    @$(LIBJULIACODEGEN_DEBUG_BUILD_DEPLIB) \
 )
 
 LOADER_INSTALL_DEP_LIBS = $(call build_deplibs, \
     $(LIBGCC_INSTALL_DEPLIB) \
-    $(LIBM_INSTALL_DEPLIB) \
     @$(LIBSTDCXX_INSTALL_DEPLIB) \
     @$(LIBJULIAINTERNAL_INSTALL_DEPLIB) \
     @$(LIBJULIACODEGEN_INSTALL_DEPLIB) \
 )
 LOADER_DEBUG_INSTALL_DEP_LIBS = $(call build_deplibs, \
     $(LIBGCC_INSTALL_DEPLIB) \
-    $(LIBM_INSTALL_DEPLIB) \
     @$(LIBSTDCXX_INSTALL_DEPLIB) \
     @$(LIBJULIAINTERNAL_DEBUG_INSTALL_DEPLIB) \
     @$(LIBJULIACODEGEN_DEBUG_INSTALL_DEPLIB) \

Makefile

@@ -226,10 +226,6 @@ JL_PRIVATE_LIBS-$(USE_SYSTEM_LLVM) += libLLVM $(LLVM_SHARED_LIB_NAME)
 endif
 JL_PRIVATE_LIBS-$(USE_SYSTEM_LIBUNWIND) += libunwind
 
-ifeq ($(USE_SYSTEM_LIBM),0)
-JL_PRIVATE_LIBS-$(USE_SYSTEM_OPENLIBM) += libopenlibm
-endif
-
 JL_PRIVATE_LIBS-$(USE_SYSTEM_BLAS) += $(LIBBLASNAME)
 ifneq ($(LIBLAPACKNAME),$(LIBBLASNAME))
 JL_PRIVATE_LIBS-$(USE_SYSTEM_LAPACK) += $(LIBLAPACKNAME)
@@ -293,7 +289,6 @@ endif
 	# We have a single exception; we want 7z.dll to live in private_libexecdir,
 	# not bindir, so that 7z.exe can find it.
 	-mv $(DESTDIR)$(bindir)/7z.dll $(DESTDIR)$(private_libexecdir)/
-	-$(INSTALL_M) $(build_bindir)/libopenlibm.dll.a $(DESTDIR)$(libdir)/
 	-$(INSTALL_M) $(build_libdir)/libssp.dll.a $(DESTDIR)$(libdir)/
 else
 

THIRDPARTY.md

@@ -32,7 +32,6 @@ and optionally:
 Julia's `stdlib` uses the following external libraries, which have their own licenses:
 
 - [DSFMT](https://github.com/MersenneTwister-Lab/dSFMT/blob/master/LICENSE.txt) [BSD-3]
-- [OPENLIBM](https://github.com/JuliaMath/openlibm/blob/master/LICENSE.md) [MIT, BSD-2, ISC]
 - [GMP](https://gmplib.org/manual/Copying.html#Copying) [LGPL3+ or GPL2+]
 - [LIBGIT2](https://github.com/libgit2/libgit2/blob/development/COPYING) [GPL2+ with unlimited linking exception]
 - [CURL](https://curl.haxx.se/docs/copyright.html) [MIT/X derivative]

base/Makefile

@@ -48,7 +48,6 @@ ifeq ($(XC_HOST),)
 else
 	@echo "const MACHINE = \"$(XC_HOST)\"" >> $@
 endif
-	@echo "const libm_name = \"$(LIBMNAME)\"" >> $@
 ifeq ($(USE_BLAS64), 1)
 	@echo "const USE_BLAS64 = true" >> $@
 else
@@ -224,13 +223,7 @@ $(build_depsbindir)/dsymutil$(EXE):
 	ln -svf "$(DSYMUTIL_PATH)" "$@"
 
 # the following excludes: libuv.a, libutf8proc.a
-
-ifneq ($(USE_SYSTEM_LIBM),0)
-$(eval $(call symlink_system_library,LIBM,$(LIBMNAME)))
-else ifneq ($(USE_SYSTEM_OPENLIBM),0)
-$(eval $(call symlink_system_library,OPENLIBM,$(LIBMNAME)))
-endif
-
+#$(eval $(call symlink_system_library,LIBM,$(LIBMNAME)))
 # On macOS, libgcc_s has soversion 1.1 always on aarch64 and only for GCC 12+
 # (-> libgfortran 5) on x86_64
 ifeq ($(OS),Darwin)

base/fastmath.jl

@@ -165,6 +165,7 @@ sub_fast(x::T, y::T) where {T<:FloatTypes} = sub_float_fast(x, y)
 mul_fast(x::T, y::T) where {T<:FloatTypes} = mul_float_fast(x, y)
 div_fast(x::T, y::T) where {T<:FloatTypes} = div_float_fast(x, y)
 
+
 add_fast(x::T, y::T, zs::T...) where {T<:FloatTypes} =
     add_fast(add_fast(x, y), zs...)
 mul_fast(x::T, y::T, zs::T...) where {T<:FloatTypes} =

base/linking.jl

@@ -155,7 +155,7 @@ function link_image_cmd(path, out)
     LIBS = is_debug() ? ("-ljulia-debug", "-ljulia-internal-debug") :
                         ("-ljulia", "-ljulia-internal")
     @static if Sys.iswindows()
-        LIBS = (LIBS..., "-lopenlibm", "-lssp", "-lgcc_s", "-lgcc", "-lmsvcrt")
+        LIBS = (LIBS..., "-lssp", "-lgcc_s", "-lgcc", "-lucrt")
     end
 
     V = VERBOSE[] ? "--verbose" : ""

base/math.jl

@@ -401,8 +401,6 @@ log(b::Number, x::Number) = log(promote(b,x)...)
 
 # type specific math functions
 
-const libm = Base.libm_name
-
 # functions with no domain error
 """
     sinh(x)
@@ -1207,7 +1205,6 @@ function rem(x::T, p::T, ::RoundingMode{:Nearest}) where T<:IEEEFloat
     return flipsign(x, oldx)
 end
 
-
 """
     modf(x)
 

contrib/julia-config.jl

@@ -71,7 +71,7 @@ function ldlibs(doframework)
             (Sys.isapple() ? string() : "-Wl,-rpath,$(shell_escape(private_libDir())) ") *
             "-l$libname"
     else
-        return "-l$libname -lopenlibm"
+        return "-l$libname -lm"
     end
 end
 

contrib/refresh_checksums.mk

@@ -24,7 +24,7 @@ CLANG_TRIPLETS=$(filter %-darwin %-freebsd,$(TRIPLETS))
 NON_CLANG_TRIPLETS=$(filter-out %-darwin %-freebsd,$(TRIPLETS))
 
 # These are the projects currently using BinaryBuilder; both GCC-expanded and non-GCC-expanded:
-BB_PROJECTS=mbedtls libssh2 nghttp2 mpfr curl libgit2 pcre libuv unwind llvmunwind dsfmt objconv p7zip zlib libsuitesparse openlibm blastrampoline libtracyclient
+BB_PROJECTS=mbedtls libssh2 nghttp2 mpfr curl libgit2 pcre libuv unwind llvmunwind dsfmt objconv p7zip zlib libsuitesparse blastrampoline libtracyclient
 BB_GCC_EXPANDED_PROJECTS=openblas csl
 BB_CXX_EXPANDED_PROJECTS=gmp llvm clang llvm-tools lld
 # These are non-BB source-only deps

deps/Makefile

@@ -23,10 +23,10 @@ BUILDDIR := $(BUILDDIR)$(MAYBE_HOST)
 # if you are adding a new target, it can help to copy an similar, existing target
 #
 # autoconf configure-driven scripts: pcre unwind gmp mpfr patchelf libuv curl
-# custom Makefile rules: openlibm dsfmt libsuitesparse lapack blastrampoline openblas utf8proc objconv libwhich
+# custom Makefile rules: dsfmt libsuitesparse lapack blastrampoline openblas utf8proc objconv libwhich
 # CMake libs: llvm llvmunwind libgit2 libssh2 mbedtls libtracyclient
 #
-# downloadable via git: llvm-svn, libuv, libopenlibm, utf8proc, libgit2, libssh2, libtracyclient
+# downloadable via git: llvm-svn, libuv, utf8proc, libgit2, libssh2, libtracyclient
 #
 # to debug 'define' rules, replace eval at the usage site with info or error
 
@@ -82,12 +82,6 @@ PATCHELF_BIN := $(CUSTOM_LD_LIBRARY_PATH) $(PATCHELF)
 
 ## USE_SYSTEM_LIBS options
 
-ifeq ($(USE_SYSTEM_OPENLIBM), 0)
-ifeq ($(USE_SYSTEM_LIBM), 0)
-DEP_LIBS += openlibm
-endif
-endif
-
 ifeq ($(USE_SYSTEM_DSFMT), 0)
 DEP_LIBS += dsfmt
 endif
@@ -190,7 +184,7 @@ DEP_LIBS_STAGED := $(DEP_LIBS)
 
 # list all targets
 DEP_LIBS_STAGED_ALL := llvm llvm-tools clang llvmunwind unwind libuv pcre \
-	openlibm dsfmt blastrampoline openblas lapack gmp mpfr patchelf utf8proc \
+	dsfmt blastrampoline openblas lapack gmp mpfr patchelf utf8proc \
 	objconv mbedtls libssh2 nghttp2 curl libgit2 libwhich zlib p7zip csl \
 	sanitizers libsuitesparse lld libtracyclient ittapi JuliaSyntax
 DEP_LIBS_ALL := $(DEP_LIBS_STAGED_ALL)
@@ -232,7 +226,6 @@ include $(SRCDIR)/ittapi.mk
 include $(SRCDIR)/llvm.mk
 include $(SRCDIR)/libuv.mk
 include $(SRCDIR)/pcre.mk
-include $(SRCDIR)/openlibm.mk
 include $(SRCDIR)/dsfmt.mk
 include $(SRCDIR)/objconv.mk
 include $(SRCDIR)/blastrampoline.mk