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41 lines
1.5 KiB
41 lines
1.5 KiB
4 months ago
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#!/bin/bash
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# This sets environment variables used by scripts/make.sh
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# People run ./configure out of habit, so do "defconfig" for them.
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if [ "$(basename "$0")" == configure ]
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then
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echo "Assuming you want 'make defconfig', but you should probably check the README."
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make defconfig
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exit $?
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fi
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# CFLAGS and OPTIMIZE are different so you can add extra CFLAGS without
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# disabling default optimizations
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[ -z "$CFLAGS" ] && CFLAGS="-Wall -Wundef -Wno-char-subscripts -Werror=implicit-function-declaration"
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# Required for our expected ABI. we're 8-bit clean thus "char" must be unsigned.
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CFLAGS="$CFLAGS -funsigned-char"
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[ -z "$OPTIMIZE" ] && OPTIMIZE="-Os -ffunction-sections -fdata-sections -fno-asynchronous-unwind-tables -fno-strict-aliasing"
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# set ASAN=1 to enable "address sanitizer" and debuggable backtraces
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[ -z "$ASAN" ] || { CFLAGS="$CFLAGS -O1 -g -fno-omit-frame-pointer -fno-optimize-sibling-calls -fsanitize=address"; NOSTRIP=1; }
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# We accept LDFLAGS, but by default don't have anything in it
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if [ "$(uname)" != "Darwin" ]
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then
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[ -z "$LDOPTIMIZE" ] && LDOPTIMIZE="-Wl,--gc-sections"
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LDASNEEDED="-Wl,--as-needed"
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fi
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# The makefile provides defaults for these, so this only gets used if
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# you call scripts/make.sh and friends directly.
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[ -z "$CC" ] && CC=cc
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[ -z "$STRIP" ] && STRIP=strip
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# If HOSTCC needs CFLAGS or LDFLAGS, just add them to the variable
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# ala HOSTCC="blah-cc --static"
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[ -z "$HOSTCC" ] && HOSTCC=cc
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[ -z "$GENERATED" ] && GENERATED=generated
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