--- a/Makefile.orig 2019-04-11 11:37:20.000000000 -0700
+++ b/Makefile 2019-04-11 11:37:53.000000000 -0700
# Leave INSTALL_ROOT empty (or just don't execute "make install") to
# not install gsm and toast outside of this directory.
# Where do you want to install the gsm library, header file, and manpages?
GSM_INSTALL_ROOT = $(INSTALL_ROOT)
GSM_INSTALL_LIB = $(GSM_INSTALL_ROOT)/lib
-GSM_INSTALL_INC = $(GSM_INSTALL_ROOT)/inc
-GSM_INSTALL_MAN = $(GSM_INSTALL_ROOT)/man/man3
+GSM_INSTALL_INC = $(GSM_INSTALL_ROOT)/include
+GSM_INSTALL_MAN = $(GSM_INSTALL_ROOT)/share/man/man3
# Where do you want to install the toast binaries and their manpage?
TOAST_INSTALL_ROOT = $(INSTALL_ROOT)
TOAST_INSTALL_BIN = $(TOAST_INSTALL_ROOT)/bin
-TOAST_INSTALL_MAN = $(TOAST_INSTALL_ROOT)/man/man1
+TOAST_INSTALL_MAN = $(TOAST_INSTALL_ROOT)/share/man/man1