chore: relocate -O2 to cflags var

Author: pcnc

ansible/tasks/setup-postgres.yml

@@ -60,7 +60,7 @@
 
 - name: Setting CFLAGS (arm)
   set_fact:
-    cflags: "-moutline-atomics -mtune=native -march=native -mcpu=native -fsigned-char"
+    cflags: "-moutline-atomics -mtune=native -march=native -mcpu=native -fsigned-char -O2"
   when: platform == "arm64"
 
 - name: Setting CFLAGS (x86)
@@ -70,7 +70,7 @@
 
 - name: Postgres - configure
   shell:
-    cmd: CFLAGS='{{ cflags }}' LLVM_CONFIG=/usr/bin/llvm-config-11 CLANG=/usr/bin/clang-11 ./configure --with-llvm --with-openssl --with-systemd --with-uuid=e2fs --with-libxml --with-icu --with-lz4 --exec-prefix=/usr/lib/postgresql --datarootdir=/var/lib/postgresql -O2
+    cmd: CFLAGS='{{ cflags }}' LLVM_CONFIG=/usr/bin/llvm-config-11 CLANG=/usr/bin/clang-11 ./configure --with-llvm --with-openssl --with-systemd --with-uuid=e2fs --with-libxml --with-icu --with-lz4 --exec-prefix=/usr/lib/postgresql --datarootdir=/var/lib/postgresql
     chdir: /tmp/postgresql-{{ postgresql_release }}
 
 - name: Postgres - build