mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-11-15 12:00:38 +01:00
6712ac7edb
bug1221620, bug1244324, bug1241034, bug1206283, bug1241037, bug1245528, bug1293334, bug1306103, bug1345089, bug1344380
77 lines
2.9 KiB
Makefile
77 lines
2.9 KiB
Makefile
#
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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# This sets warning flags for unix-like operating systems.
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ifndef CC_NAME
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CC_NAME := $(shell $(CC) -? 2>&1 >/dev/null | sed -e 's/:.*//;1q')
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export CC_NAME
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endif
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ifndef WARNING_CFLAGS
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# This tests to see if enabling the warning is possible before
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# setting an option to disable it.
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disable_warning = $(shell $(CC) -x c -E -Werror -W$(1) /dev/null >/dev/null 2>&1 && echo -Wno-$(1))
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WARNING_CFLAGS = -Wall
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ifeq ($(CC_NAME),clang)
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# -Qunused-arguments : clang objects to arguments that it doesn't understand
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# and fixing this would require rearchitecture
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WARNING_CFLAGS += -Qunused-arguments
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# -Wno-parentheses-equality : because clang warns about macro expansions
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OS_CFLAGS += $(call disable_warning,parentheses-equality)
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ifdef BUILD_OPT
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# clang is unable to handle glib's expansion of strcmp and similar for optimized
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# builds, so ignore the resulting errors.
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# See https://llvm.org/bugs/show_bug.cgi?id=20144
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WARNING_CFLAGS += $(call disable_warning,array-bounds)
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WARNING_CFLAGS += $(call disable_warning,unevaluated-expression)
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endif
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endif # if clang
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ifndef NSS_ENABLE_WERROR
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ifeq ($(OS_TARGET),Android)
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# Android lollipop generates the following warning:
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# error: call to 'sprintf' declared with attribute warning:
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# sprintf is often misused; please use snprintf [-Werror]
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# So, just suppress -Werror entirely on Android
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NSS_ENABLE_WERROR = 0
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$(warning OS_TARGET is Android, disabling -Werror)
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else
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ifeq ($(CC_NAME),clang)
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# Clang reports its version as an older gcc, but it's OK
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NSS_ENABLE_WERROR = 1
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else
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CC_VERSION := $(subst ., ,$(shell $(CC) -dumpversion))
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ifneq (,$(filter 4.8 4.9,$(word 1,$(CC_VERSION)).$(word 2,$(CC_VERSION))))
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NSS_ENABLE_WERROR = 1
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endif
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ifeq (,$(filter 0 1 2 3 4,$(word 1,$(CC_VERSION))))
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NSS_ENABLE_WERROR = 1
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endif
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ifndef NSS_ENABLE_WERROR
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$(warning Unable to find gcc 4.8 or greater, disabling -Werror)
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NSS_ENABLE_WERROR = 0
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endif
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endif
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endif
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endif #ndef NSS_ENABLE_WERROR
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ifeq ($(NSS_ENABLE_WERROR),1)
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WARNING_CFLAGS += -Werror
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# For gcc 6 and newer we need -Wno-error=misleading-indentation
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# to prevent compiler errors caused by mixed whitespace.
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CC_VERSION := $(subst ., ,$(shell $(CC) -dumpversion))
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ifeq (,$(filter 0 1 2 3 4 5,$(word 1,$(CC_VERSION))))
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WARNING_CFLAGS += -Wno-error=misleading-indentation
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endif
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else
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# Old versions of gcc (< 4.8) don't support #pragma diagnostic in functions.
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# Use this to disable use of that #pragma and the warnings it suppresses.
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WARNING_CFLAGS += -DNSS_NO_GCC48
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endif
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export WARNING_CFLAGS
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endif # ndef WARNING_CFLAGS
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