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Allow CFLAGS to be modified from make command line

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Previously, if the user wanted to modify CFLAGS, it was necessary to add
the options used in the Makefile as well, which doesn't make sense.

This patch splits CFLAGS into CFLAGS and the previously removed
REALCFLAGS so that the user can modify the arguments passed to the
compiler without having to worry about things like passing the list of
include directories.

Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
This commit is contained in:
Antonio Niño Díaz
2017-07-15 20:10:28 +01:00
parent fe65e07cb6
commit f9a1aba0d8
1 changed files with 12 additions and 7 deletions
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19
Makefile
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@@ -16,7 +16,12 @@ PNGLDFLAGS := `${PKG_CONFIG} --static --libs-only-L libpng`
PNGLDLIBS := `${PKG_CONFIG} --static --libs-only-l libpng` PNGLDLIBS := `${PKG_CONFIG} --static --libs-only-l libpng`
WARNFLAGS := -Wall -Werror WARNFLAGS := -Wall -Werror
CFLAGS := ${WARNFLAGS} -g -std=c99 -D_POSIX_C_SOURCE=200809L -Iinclude
# Overridable CFLAGS
CFLAGS := -g
# Non-overridable CFLAGS
REALCFLAGS := ${CFLAGS} ${WARNFLAGS} -std=c99 -D_POSIX_C_SOURCE=200809L \
-Iinclude
YFLAGS := YFLAGS :=
LFLAGS := --nounistd LFLAGS := --nounistd
@@ -77,16 +82,16 @@ rgbgfx_obj := \
src/extern/err.o src/extern/err.o
rgbasm: ${rgbasm_obj} rgbasm: ${rgbasm_obj}
$Q${CC} ${CFLAGS} -o $@ ${rgbasm_obj} -lm $Q${CC} ${REALCFLAGS} -o $@ ${rgbasm_obj} -lm
rgblink: ${rgblink_obj} rgblink: ${rgblink_obj}
$Q${CC} ${CFLAGS} -o $@ ${rgblink_obj} $Q${CC} ${REALCFLAGS} -o $@ ${rgblink_obj}
rgbfix: ${rgbfix_obj} rgbfix: ${rgbfix_obj}
$Q${CC} ${CFLAGS} -o $@ ${rgbfix_obj} $Q${CC} ${REALCFLAGS} -o $@ ${rgbfix_obj}
rgbgfx: ${rgbgfx_obj} rgbgfx: ${rgbgfx_obj}
$Q${CC} ${CFLAGS} ${PNGLDFLAGS} -o $@ ${rgbgfx_obj} ${PNGLDLIBS} $Q${CC} ${REALCFLAGS} ${PNGLDFLAGS} -o $@ ${rgbgfx_obj} ${PNGLDLIBS}
# Rules to process files # Rules to process files
@@ -96,11 +101,11 @@ rgbgfx: ${rgbgfx_obj}
.l.o: .l.o:
$Q${RM} $*.c $Q${RM} $*.c
$Q${LEX} ${LFLAGS} -o $*.c $< $Q${LEX} ${LFLAGS} -o $*.c $<
$Q${CC} ${CFLAGS} -c -o $@ $*.c $Q${CC} ${REALCFLAGS} -c -o $@ $*.c
$Q${RM} $*.c $Q${RM} $*.c
.c.o: .c.o:
$Q${CC} ${CFLAGS} ${PNGCFLAGS} -c -o $@ $< $Q${CC} ${REALCFLAGS} ${PNGCFLAGS} -c -o $@ $<
# Target used to remove all files generated by other Makefile targets. # Target used to remove all files generated by other Makefile targets.