Optimize R (#3841)

* Optimize R

* Build R shared lib

Author: IsabelParedes

recipes/recipes_emscripten/r-base/build.sh

@@ -97,6 +97,7 @@ pushd _build_wasm
         --prefix=$PREFIX    \
         --build="x86_64-conda-linux-gnu" \
         --host="wasm32-unknown-emscripten" \
+        --enable-R-shlib \
         $CONFIG_ARGS
 
     emmake make -j${CPU_COUNT}

recipes/recipes_emscripten/r-base/config.site

@@ -1,5 +1,8 @@
 #! /bin/sh
 
+# Optimization
+OPT_FLAG="-Oz"
+
 ### This file is part of R.
 ###
 ### R is free software; you can redistribute it and/or modify it under
@@ -53,7 +56,7 @@ CC=emcc
 ## and '-g' in all other cases except icc (for which see R-admin.html).
 ## Be wary of aggressive settings such as -ffast-math, -Ofast and
 ## -Werror (which is likely to cause configure to fail).
-CFLAGS="-fPIC -fwasm-exceptions -sSUPPORT_LONGJMP=wasm"
+CFLAGS="${OPT_FLAG} -fPIC -fwasm-exceptions -sSUPPORT_LONGJMP=wasm"
 
 ## Ditto for a compiler that supports C17 features and not C23 ones.
 ## For example, 'CC17=gcc -std=gnu17', omit -Wstrict-prototypes from C17FLAGS.
@@ -110,7 +113,7 @@ CFLAGS="-fPIC -fwasm-exceptions -sSUPPORT_LONGJMP=wasm"
 ## options (such as defines) for the C preprocessor and compiler.
 ## If unset defaults to '-I/usr/local/include', with '-I/sw/include'
 ## prepended on systems using Fink with root '/sw'.
-CPPFLAGS="-fwasm-exceptions -sSUPPORT_LONGJMP=wasm -I$PREFIX/include"
+CPPFLAGS="${OPT_FLAG} -fwasm-exceptions -sSUPPORT_LONGJMP=wasm -I$PREFIX/include"
 
 ## The command which runs the Fortran compiler.
 ## Used for both fixed-form and free-form Fortran
@@ -119,7 +122,7 @@ FC=flang-new
 
 ## Options for the Fortran compiler.
 ## Use this to specify compilation flags for fixed-form Fortran.
-FFLAGS="-g --target=wasm32-unknown-emscripten -fPIC"
+FFLAGS="-g --target=wasm32-unknown-emscripten -fPIC -O2"
 ## Ditto for free-form Fortran.
 ## FCFLAGS=
 ## If just one of these is set, it is used for both.
@@ -166,8 +169,7 @@ FCLIBS="-lFortranRuntime"
 ## is given.
 ## For example, one can set flags for profiling here.
 ## NOTE: These apply to R.bin
-MAIN_LDFLAGS="-sWASM_BIGINT \
--sMAIN_MODULE=1 \
+MAIN_LDFLAGS="-sMAIN_MODULE=1 \
 -sSTACK_SIZE=5MB \
 -sALLOW_MEMORY_GROWTH=1 \
 -sEXPORTED_RUNTIME_METHODS=callMain,FS,ENV,getEnvStrings,TTY \
@@ -208,7 +210,7 @@ FPICFLAGS="-fPIC"
 ## On macOS, the default is
 ## -dynamiclib -Wl,-headerpad_max_install_names -undefined dynamic_lookup
 ## For other platforms, see configure.ac
-SHLIB_LDFLAGS="-sSIDE_MODULE=1 -sWASM_BIGINT -fwasm-exceptions -sSUPPORT_LONGJMP=wasm"
+SHLIB_LDFLAGS="${OPT_FLAG} -sSIDE_MODULE=1 -fwasm-exceptions -sSUPPORT_LONGJMP=wasm"
 
 ## ditto for a dynamic library: DYLIB_LDFLAGS defaults to SHLIB_LDFLAGS
 ## DYLIB_LD=
@@ -226,7 +228,7 @@ SHLIB_LDFLAGS="-sSIDE_MODULE=1 -sWASM_BIGINT -fwasm-exceptions -sSUPPORT_LONGJMP
 ## on macOS systems using Fink with root '/sw'.
 ## On some Linux 64-bit systems its default is -L/usr/local/lib64.
 ## If LIBnn is set it defaults to -L/usr/local/$LIBnn.
-LDFLAGS="-L$PREFIX/lib -sWASM_BIGINT"
+LDFLAGS="${OPT_FLAG} -L$PREFIX/lib"
 
 
 ## The command which runs the C++ compiler.
@@ -239,7 +241,7 @@ LDFLAGS="-L$PREFIX/lib -sWASM_BIGINT"
 CXX=em++
 
 ## Options for the C++ compiler.
-CXXFLAGS="-sWASM_BIGINT"
+CXXFLAGS="${OPT_FLAG}"
 
 ## Any special flags which must be used when compiling C++ code to be
 ## turned into a shared object.  If this variable is left unspecified
@@ -260,7 +262,7 @@ CXXPICFLAGS="-fPIC"
 ## containing object files from a C++ compiler.  This is usually
 ## automatically detected by configure, and anything set here will be in
 ## addition unless SHLIB_CXXLD is given.
-SHLIB_CXXLDFLAGS="-sSIDE_MODULE=1"
+SHLIB_CXXLDFLAGS="${OPT_FLAG} -sSIDE_MODULE=1"
 
 ## Not used by R but configure can fail to find it, so set to
 ## "$CXX -E" if it does.

recipes/recipes_emscripten/r-base/recipe.yaml

@@ -26,7 +26,7 @@ source:
   - patches/0013-Use-source-files-when-installing.patch
 
 build:
-  number: 0
+  number: 1
 
 requirements:
   build:
@@ -65,7 +65,7 @@ requirements:
 tests:
 - package_contents:
     lib:
-    - R/lib/libR.a
+    - R/lib/libR.so
     - R/lib/libRblas.so
     - R/lib/libRlapack.so
     - R/library/grDevices/libs/cairo.so