Format and improve build scripts

Author: Eris A.

.gitignore

@@ -1,6 +1,12 @@
 autom4te.cache
+configure
+ltmain.sh
+m4/
+missing
+stamp-h1
 configure~
 config.h
+config.h.in
 config.h.in~
 config.log
 Makefile
@@ -23,4 +29,4 @@ src/.deps
 src/calls.h
 src/libsyscall_interceptor*
 src/syscall.h
-src/unistd_64.h
+src/unistd_64.h

Makefile.am

@@ -1,2 +1,3 @@
 SUBDIRS = src
 dist_doc_DATA = README
+ACLOCAL_AMFLAGS = -I m4

configure.ac

@@ -1,18 +1,32 @@
+AC_PREREQ([2.71])
 AC_INIT([syscall_interceptor], [1.0], [[email protected]])
-LT_INIT
 AM_INIT_AUTOMAKE([-Wall -Werror foreign])
 AC_CONFIG_MACRO_DIRS([m4])
+
+AC_CHECK_PROG([PYTHON3], [python3], ["yes"])
+AS_IF([test "x$PYTHON3" != "xyes"], [
+  AC_MSG_ERROR([Program python3 not found. Either install it or add it to PATH])
+])
+
 AC_PROG_CC
-AC_CHECK_LIB
-AC_HEADER_STDC
+AC_PROG_CPP
+AC_PROG_CXX
+AM_PROG_AR
+
+LT_INIT
+
+AC_CHECK_HEADERS([unistd.h])
 AC_CHECK_HEADERS([strings.h])
 AC_CHECK_HEADERS([libsyscall_intercept_hook_point.h])
 AC_CHECK_HEADER_STDBOOL
+
+AC_TYPE_PID_T
+AC_TYPE_SIZE_T
+AC_TYPE_SSIZE_T
+
 AC_FUNC_MALLOC
-AC_PROG_CPP
-AC_PROG_CXX
-AC_PROG_RANLIB
-AM_PROG_AR
+AC_CHECK_FUNCS([strstr])
+
 AC_CONFIG_COMMANDS([config.yml],
                    [python3 parse_config.py > src/calls.h])
 AC_CONFIG_HEADERS([config.h])

src/Makefile.am

@@ -1,9 +1,4 @@
-#bin_PROGRAMS = syscall_interceptor
-#syscall_interceptor_SOURCES = main.c
-#syscall_interceptor_CFLAGS = -lsyscall_intercept
-
 lib_LTLIBRARIES = libsyscall_interceptor.la
 libsyscall_interceptor_la_SOURCES = main.c
 libsyscall_interceptor_la_CFLAGS = -fpic -lsyscall_intercept -Wall -Wextra
 libsyscall_interceptor_la_LDFLAGS = -version-info 1:0:0
-