Problems compiling Ruby 2.4.2 - ruby

Question

I am trying to build a minimal easily transportable Ruby without relying on external projects, just for my own learning process.
I am using otool -L ruby to determine what libraries the Ruby binary is dynamically linking against as I am trying to minimize it.
Yesterday when i built Ruby it only dynamically linked against 3 libraries, however today when i build Ruby it is linking against 13. I have no idea what has changed between yesterday and today but I am thoroughly confused -- especially as many of the libraries it is linking against existed prior to yesterday's compilation.
On Yesterday's Ruby executable the result of otool -L was:
otool -L ruby
ruby:
/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 1349.8.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1238.60.2)
/usr/lib/libobjc.A.dylib (compatibility version 1.0.0, current version 228.0.0)
/usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version 489.0.0)
But today it is:
otool -L ./ruby
./ruby:
/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 1349.8.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1238.60.2)
/usr/lib/libobjc.A.dylib (compatibility version 1.0.0, current version 228.0.0)
/usr/local/opt/openssl/lib/libcrypto.1.0.0.dylib (compatibility version 1.0.0, current version 1.0.0)
/usr/local/opt/openssl/lib/libssl.1.0.0.dylib (compatibility version 1.0.0, current version 1.0.0)
/usr/lib/libz.1.dylib (compatibility version 1.0.0, current version 1.2.8)
/usr/lib/libffi.dylib (compatibility version 1.0.0, current version 1.0.0)
/usr/local/opt/gdbm/lib/libgdbm.4.dylib (compatibility version 5.0.0, current version 5.0.0)
/usr/lib/libutil.dylib (compatibility version 1.0.0, current version 1.0.0)
/usr/lib/libedit.3.dylib (compatibility version 2.0.0, current version 3.0.0)
/usr/lib/libncurses.5.4.dylib (compatibility version 5.4.0, current version 5.4.0)
/usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version 489.0.0)
Does anyone know what is going on?
I am compiling Ruby 2.4.2 like so:
X="-arch i386 -mmacosx-version-min=10.5"
CFLAGS="$X" CXXFLAGS="$X" LDFLAGS="$X" ./configure --prefix=/tmp/ruby-deploy --with-openssl-dir=$(brew --prefix openssl) --disable-install-doc --without-gmp

Answer 1

The answer to this was that I had also run:
CFLAGS="$X" CXXFLAGS="$X" LDFLAGS="$X" ./configure --prefix=/tmp/ruby-deploy --with-openssl-dir=$(brew --prefix openssl) --with-static-linked-ext --disable-install-doc --without-gmp
at one point -- note the --with-static-linked-ext. This resulted in the other dynamically linked libs.
However because i had subsequently run ./configure again WITHOUT that option i assumed it would have reset the configuration, but it didn't.
I discovered the problem by wiping out the Ruby source folder and re-fetching from github. Running the initial ./configure (excluding the --with-static-linked-ext resolved the issue!