--- trealla-3.5.22/GNUmakefile.orig
+++ trealla-3.5.22/GNUmakefile
@@ -1,19 +1,17 @@
 # Installation paths
-PREFIX ?= /usr/local
+PREFIX ?= /usr
 BINDIR ?= $(PREFIX)/bin
 LIBDIR ?= $(PREFIX)/share/trealla
 MANDIR ?= $(PREFIX)/share/man
 
 EMBED ?= 1
 
-PYTHON ?= python3
-HOST_CC ?= cc
+PYTHON ?= python3.9
+HOST_CC ?= gcc
 
-GIT_VERSION := "$(shell git describe --abbrev=4 --dirty --always --tags)"
-GIT_VERSION := "$(shell git describe --abbrev=4 --dirty --always --tags)"
 COMPILER_IS_GCC := $(shell $(CC) --version | grep -E -o 'g?cc')
 
-CFLAGS = -MMD -MP -Isrc -I/usr/local/include -DVERSION='$(GIT_VERSION)' \
+CFLAGS = -MMD -MP -Isrc \
 	-DDEFAULT_LIBRARY_PATH='"$(LIBDIR)/library"' \
 	-O3 $(OPT) -D_GNU_SOURCE \
 	-Wall -Wextra \
@@ -41,7 +39,7 @@
 CFLAGS += -DINDEX_PROFILE
 endif
 
-LDFLAGS = -L/usr/local/lib -lm
+LDFLAGS = -lm
 
 UNAME_S := $(shell uname -s)
 
@@ -57,6 +55,12 @@
 LDFLAGS += -lnetwork
 endif
 
+ifeq ($(UNAME_S), SunOS)
+CFLAGS += -I/usr/lib/MACH64/libffi-3.2.1/include -I/usr/openssl/3/include
+CFLAGS += -Wno-error=int-conversion -Wno-error=implicit-function-declaration
+LDFLAGS += -L/usr/openssl/3/lib/MACH64
+endif
+
 ifdef HOMEBREW_PREFIX
 LDFLAGS += -L$(HOMEBREW_PREFIX)/opt/libffi/lib -L$(HOMEBREW_PREFIX)/opt/openssl@3/lib
 CFLAGS += -I$(HOMEBREW_PREFIX)/opt/libffi/include -I$(HOMEBREW_PREFIX)/opt/openssl@3/include
@@ -93,8 +98,8 @@
 endif
 
 ifdef READLINE
-CFLAGS += -DUSE_READLINE=1 -I$(HOMEBREW_PREFIX)/opt/readline/include
-LDFLAGS += -lreadline -L$(HOMEBREW_PREFIX)/opt/readline/lib
+CFLAGS += -DUSE_READLINE=1 -I$(HOMEBREW_PREFIX)/readline/include
+LDFLAGS += -lreadline -L$(HOMEBREW_PREFIX)/readline/lib
 endif
 
 ifdef EDITLINE
@@ -120,7 +125,7 @@
 endif
 
 ifndef NOFFI
-CFLAGS += -DUSE_FFI=1 -I/usr/local/opt/libffi/include
+CFLAGS += -DUSE_FFI=1
 LDFLAGS += -lffi
 ifeq ($(filter OpenBSD Haiku,$(UNAME_S)),)
 LDFLAGS += -ldl