feat(autotools): basic usage

src/42sh.c

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+// all includes
+
+int main(int argc, char **argv)
+{
+    return 0;
+}

src/Makefile.am

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+# define the subdirectories
+SUBDIRS = \
+	  ast \
+      parser \
+	  lexer \
+	  io_backend \
+	  execution \
+	  expansion
+#  + utils if needed
+
+bin_PROGRAMS = 42sh
+
+42sh_SOURCES = 42sh.c
+
+42sh_CPPFLAGS = -I%D%
+
+42sh_CFLAGS = -std=c99 -pedantic -Werror -Wall -Wextra -Wvla
+
+42sh_LDADD =  \
+       ast/libast.a \
+       parser/libparser.a \
+	   lexer/liblexer.a \
+	   io_backend/libio_backend.a \
+	   expansion/libexpansion.a \
+	   execution/libexecution.a

src/ast/Makefile.am

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+lib_LIBRARIES = libast.a
+
+libast_a_SOURCES =  \
+  ast.c \
+  ast.h
+
+libast_a_CPPFLAGS = -I$(top_srcdir)/src
+
+libast_a_CFLAGS = -std=c99 -pedantic -Werror -Wall -Wextra -Wvla
+
+noinst_LIBRARIES = libast.a

src/execution/Makefile.am

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+lib_LIBRARIES = libexecution.a
+
+libexecution_a_SOURCES =  \
+  execution.c \
+  execution.h
+
+libexecution_a_CPPFLAGS = -I$(top_srcdir)/src
+
+libexecution_a_CFLAGS = -std=c99 -pedantic -Werror -Wall -Wextra -Wvla
+
+noinst_LIBRARIES = libexecution.a

src/expansion/Makefile.am

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+lib_LIBRARIES = libexpansion.a
+
+libexpansion_a_SOURCES =  \
+  expansion.c \
+  expansion.h
+
+libexpansion_a_CPPFLAGS = -I$(top_srcdir)/src
+
+libexpansion_a_CFLAGS = -std=c99 -pedantic -Werror -Wall -Wextra -Wvla
+
+noinst_LIBRARIES = libexpansion.a

src/io_backend/Makefile.am

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+lib_LIBRARIES = libio_backend.a
+
+libio_backend_a_SOURCES =  \
+  io_backend.c \
+  io_backend.h
+
+libio_backend_a_CPPFLAGS = -I$(top_srcdir)/src
+
+libio_backend_a_CFLAGS = -std=c99 -pedantic -Werror -Wall -Wextra -Wvla
+
+noinst_LIBRARIES = libio_backend.a

src/lexer/Makefile.am

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+lib_LIBRARIES = liblexer.a
+
+liblexer_a_SOURCES =  \
+  lexer.c \
+  lexer.h
+
+liblexer_a_CPPFLAGS = -I$(top_srcdir)/src
+
+liblexer_a_CFLAGS = -std=c99 -pedantic -Werror -Wall -Wextra -Wvla
+
+noinst_LIBRARIES = liblexer.a

src/parser/Makefile.am

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+lib_LIBRARIES = libparser.a
+
+libparser_a_SOURCES =  \
+  parser.c \
+  parser.h
+
+libparser_a_CPPFLAGS = -I$(top_srcdir)/src
+
+libparser_a_CFLAGS = -std=c99 -pedantic -Werror -Wall -Wextra -Wvla
+
+noinst_LIBRARIES = libparser.a