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([2804:14c:485:4b61:9d59:514f:431d:4a45]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7324273e34bsm10965017b3a.108.2025.02.18.16.33.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Feb 2025 16:33:58 -0800 (PST) From: Fabio Estevam To: david.oberhollenzer@sigma-star.at Cc: chengzhihao1@huawei.com, raj.khem@gmail.com, linux-mtd@lists.infradead.org, Fabio Estevam Subject: [PATCH v3 mtd-utils 3/4] configure.ac: Add a check for execinfo and backtrace Date: Tue, 18 Feb 2025 21:33:28 -0300 Message-Id: <20250219003329.2078308-3-festevam@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250219003329.2078308-1-festevam@gmail.com> References: <20250219003329.2078308-1-festevam@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250218_163359_931264_EB288729 X-CRM114-Status: GOOD ( 14.47 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org musl relies on an external execinfo library to provide backtrace functionality. If musl cannot link to libexecinfo, the following link error happens: | /work/festevam/oe/poky/build/tmp/work/core2-64-poky-linux-musl/mtd-utils/2.3.0/recipe-sysroot-native/usr/bin/x86_64-poky-linux-musl/../../libexec/x86_64-poky-linux-musl/gcc/x86_64-poky-linux-musl/14.2.0/ld: ubifs-utils/libubifs/mkfs_ubifs-io.o: in function `dump_stack': | /usr/src/debug/mtd-utils/2.3.0/ubifs-utils/common/defs.h:71:(.text+0x25): undefined reference to `backtrace' .... | collect2: error: ld returned 1 exit status | make: *** [Makefile:2959: mkfs.ubifs] Error 1 Fix the problem by checking for backtrace support in libc first and if not found, then check for backtrace support in the external libexecinfo. Signed-off-by: Fabio Estevam Suggested-by: Khem Raj --- Change since v2: - Check for backtrace support in libc first and if not found, then check libexecinfo. (Khem) configure.ac | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/configure.ac b/configure.ac index 2a79ba820fc0..296901e61760 100644 --- a/configure.ac +++ b/configure.ac @@ -238,6 +238,17 @@ if test "x$need_cmocka" = "xyes"; then PKG_CHECK_MODULES(CMOCKA, [cmocka], [], [cmocka_missing="yes"]) fi +AC_CHECK_FUNC([backtrace], [have_backtrace=yes], [have_backtrace=no]) + +if test "x$have_backtrace" = "xno"; then + AC_CHECK_LIB([execinfo], [backtrace], + [LIBS="$LIBS -lexecinfo" + AC_DEFINE([HAVE_BACKTRACE], [1], [backtrace is available via libexecinfo])], + [AC_MSG_WARN([backtrace support not found])]) +else + AC_DEFINE([HAVE_BACKTRACE], [1], [backtrace is available via libc]) +fi + AC_CHECK_HEADERS([execinfo.h]) ##### produce summary on dependencies ##### -- 2.34.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/