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Create my own advanced Makefile #342

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Create my own advanced Makefile #342

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fd29153
Create my own advanced Makefile
ericsandu Mar 22, 2026
80cbadd
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ericsandu Mar 22, 2026
30f1e2d
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ericsandu Mar 22, 2026
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ericsandu Mar 22, 2026
3ae481c
Fix file existence checks
ericsandu Mar 22, 2026
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28 changes: 28 additions & 0 deletions gnumake/custom/Makefile
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Original file line number Diff line number Diff line change
@@ -0,0 +1,28 @@
.PHONY: clean

# Compiler flags
CC=gcc
CFLAGS=-Wall -Wextra -std=c99

# Checks if executables exist
GREETING_EXISTS := $(or $(and $(wildcard greeting),1),)
TWOPARTER_EXISTS := $(or $(and $(wildcard twoparter),1),)

# Builds two executables, greeting and twoparter
all: greeting twoparter

# Builds greeting with default compilation settings
greeting: greeting.c

# Builds executable from multiple .c files and a .h header
twoparter: part1.c part2.c header.h
$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^

# Removes executables if they exist
clean:
ifdef GREETING_EXISTS
rm greeting
endif
ifdef TWOPARTER_EXISTS
rm twoparter
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Copilot AI Mar 22, 2026

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ifdef GREETING_EXISTS / ifdef TWOPARTER_EXISTS will always evaluate true here because both variables are assigned unconditionally (and are non-empty). This makes clean try to remove files even when they don’t exist, and rm will fail the target. Prefer rm -f greeting twoparter, or use ifneq ($(wildcard greeting),) style checks instead of ifdef.

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@ericsandu ericsandu Mar 22, 2026

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Fixed by assigning NULL value instead of 0 in variables

endif