se adiciona experimental/facho-wasm para crear wasm de firmado para facturacion electronica

FossilOrigin-Name: f5823c4b16ec6f81eaf92676dfe4a2bee3edc150ce3485ffcd8732c2c4284e5b

experimental/facho-wasm/xmlsec-wasm/build_openssl.sh

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+#!/bin/sh
+# TOMADO DE: https://github.com/voltbuilder/openssl-wasm
+
+OPENSSL_VERSION=1.1.1l
+
+# get the source
+tar xf openssl-${OPENSSL_VERSION}.tar.gz
+
+patch -p0 < openssl-${OPENSSL_VERSION}.patch
+
+cd openssl-${OPENSSL_VERSION}
+make clean
+
+set -e
+
+# why ./Configure instead of ./config? We want to force using the generic gcc profile which is more conservative than linux-x32
+# -no-sock - we don't have sockets in WASI
+# new -no-ui-console - sdk 12 has no termios???
+# check in 12 -DHAVE_FORK=0 - no fork() in WASI
+# new -D_WASI_EMULATED_MMAN - works with the library below to enable WASI mman emulation
+# new -D_WASI_EMULATED_SIGNAL - with sdk 12
+# new -DOPENSSL_NO_SECURE_MEMORY - wasi doesn't have secure mem (madvise, mlock, etc...)
+# new -DNO_SYSLOG - get rid of need for patch above
+# --with-rand-seed=getrandom (needed to force using getentropy because WASI has no /dev/random or getrandom)
+wasiconfigure ./Configure gcc -no-sock -no-ui-console -DHAVE_FORK=0 -D_WASI_EMULATED_MMAN -D_WASI_EMULATED_SIGNAL -DOPENSSL_NO_SECURE_MEMORY -DNO_SYSLOG --with-rand-seed=getrandom
+
+# enables stuff from mman.h (see define above) also add -lwasi-emulated-signal
+#sed -i -e "s/CNF_EX_LIBS=/CNF_EX_LIBS=-lwasi-emulated-mman -lwasi-emulated-signal /g" Makefile
+
+# build!
+wasimake make -j4 build_generated libssl.a libcrypto.a
+
+rm -rf ../vendor/openssl/include
+mkdir -p ../vendor/openssl/include
+cp -R include/openssl ../vendor/openssl/include
+
+mkdir -p ../vendor/openssl/lib/
+cp libssl.a ../vendor/openssl/lib/
+cp libcrypto.a ../vendor/openssl/lib/
+
+exit 0