diff --git a/config/env.ini b/config/env.ini
index 62aeceed..61079cb3 100644
--- a/config/env.ini
+++ b/config/env.ini
@@ -94,7 +94,7 @@ SPC_MICRO_PATCHES=static_extensions_win32,cli_checks,disable_huge_page,vcruntime
 ; `native-native`               - links against system libc dynamically
 ; `native-native-musl`          - links against musl libc statically
 ; `native-native-musl -dynamic` - links against musl libc dynamically
-SPC_TARGET=${GNU_ARCH}-linux
+SPC_TARGET=${GNU_ARCH}-linux-musl
 
 ; compiler environments (default value is defined by selected toolchain)
 CC=${SPC_DEFAULT_CC}
@@ -102,7 +102,7 @@ CXX=${SPC_DEFAULT_CXX}
 AR=${SPC_DEFAULT_AR}
 LD=${SPC_DEFAULT_LD}
 ; default compiler flags, used in CMake toolchain file, openssl and pkg-config build
-SPC_DEFAULT_C_FLAGS="-fPIC -Os"
+SPC_DEFAULT_C_FLAGS="-fPIC -O3 -pipe -fno-plt -fno-semantic-interposition -fstack-clash-protection -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -ffunction-sections -fdata-sections"
 SPC_DEFAULT_CXX_FLAGS="${SPC_DEFAULT_C_FLAGS}"
 SPC_DEFAULT_LD_FLAGS="-Wl,-z,relro -Wl,--as-needed -Wl,-z,now -Wl,-z,noexecstack -Wl,--gc-sections"
 ; upx executable path
@@ -142,7 +142,7 @@ CXX=${SPC_DEFAULT_CXX}
 AR=${SPC_DEFAULT_AR}
 LD=${SPC_DEFAULT_LD}
 ; default compiler flags, used in CMake toolchain file, openssl and pkg-config build
-SPC_DEFAULT_C_FLAGS="--target=${MAC_ARCH}-apple-darwin -Os"
+SPC_DEFAULT_C_FLAGS="--target=${MAC_ARCH}-apple-darwin -fPIC -O3 -fno-plt -fno-semantic-interposition -fstack-clash-protection -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -ffunction-sections -fdata-sections"
 SPC_DEFAULT_CXX_FLAGS="${SPC_DEFAULT_C_FLAGS}"
 SPC_DEFAULT_LD_FLAGS="-Wl,-z,relro -Wl,--as-needed -Wl,-z,now -Wl,-z,noexecstack -Wl,--gc-sections"
 ; phpmicro patches, for more info, see: https://github.com/easysoft/phpmicro/tree/master/patches