diff -uNr a/Makefile.Linux b/Makefile.Linux
--- a/Makefile.Linux	2018-04-18 22:48:45.000000000 +0300
+++ b/Makefile.Linux	2019-05-26 14:42:38.927811513 +0300
@@ -8,13 +8,13 @@
 # library support. Add -DSAFESQL for poorely written ODBC library / drivers.
 
 BUILDDIR =
-CC = gcc
+CC ?= gcc
 
-CFLAGS = -g -O2 -fno-strict-aliasing -c -pthread -DGETHOSTBYNAME_R -D_THREAD_SAFE -D_REENTRANT -DNOODBC -DWITH_STD_MALLOC -DFD_SETSIZE=4096 -DWITH_POLL
+CFLAGS += -fno-strict-aliasing -c -pthread -DGETHOSTBYNAME_R -D_THREAD_SAFE -D_REENTRANT -DNOODBC -DWITH_STD_MALLOC -DFD_SETSIZE=4096 -DWITH_POLL
 COUT = -o 
-LN = gcc
+LN ?= gcc
 DCFLAGS = -fpic
-LDFLAGS = -O2 -fno-strict-aliasing -pthread
+LDFLAGS += -fno-strict-aliasing -pthread
 DLFLAGS = -shared
 DLSUFFICS = .ld.so
 # -lpthreads may be reuqired on some platforms instead of -pthreads
@@ -39,12 +39,12 @@
 include Makefile.inc
 
 allplugins:
-	@list='$(PLUGINS)'; for p in $$list; do cp Makefile Makefile.var plugins/$$p; cd plugins/$$p ; make ;	cd ../.. ; done
+	@list='$(PLUGINS)'; for p in $$list; do cp Makefile Makefile.var plugins/$$p; cd plugins/$$p ; $(MAKE) ;	cd ../.. ; done
 
 DESTDIR		=
-prefix		= /usr/local
+prefix		=
 exec_prefix	= $(prefix)
-man_prefix	= $(prefix)/share
+man_prefix	= $(prefix)/usr/share
 
 INSTALL		= /usr/bin/install
 INSTALL_BIN	= $(INSTALL) -m 755
diff -uNr a/src/stringtable.c b/src/stringtable.c
--- a/src/stringtable.c	2018-04-18 22:48:45.000000000 +0300
+++ b/src/stringtable.c	2019-05-26 14:42:07.437810566 +0300
@@ -38,7 +38,7 @@
 /* 24 */	NULL,
 #ifndef TPROXY_CONF
 #ifndef _WIN32
-/* 25 */	(unsigned char *)"/usr/local/etc/3proxy/3proxy.cfg",
+/* 25 */	(unsigned char *)"/etc/3proxy/3proxy.cfg",
 #else
 /* 25 */	(unsigned char *)"3proxy.cfg",
 #endif