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Mon, 13 Nov 2023 08:10:11 -0800 (PST) From: Roger Pau Monne To: xen-devel@lists.xenproject.org Cc: Konrad Rzeszutek Wilk , Ross Lagerwall , Roger Pau Monne Subject: [PATCH 1/2] livepatch-tools: add -largp option when required Date: Mon, 13 Nov 2023 17:09:39 +0100 Message-ID: <20231113160940.52430-2-roger.pau@citrix.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231113160940.52430-1-roger.pau@citrix.com> References: <20231113160940.52430-1-roger.pau@citrix.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @citrix.com) X-ZM-MESSAGEID: 1699891835479100001 crate-diff-object makes use of argp library, and depending on the libc used by the system (ie: musl or BSD libc) argp is a separate library and requires the addition of -largp to the build rune. Introduce some shell logic to detect whether -largp is required for linking create-diff-object. I haven't done this as a reusable macro because I'm not sure there's much point in doing so, the only library we need to test for is argp, anything else is likely to be a mandatory library flag that doesn't require such testing (like libelf for example). Signed-off-by: Roger Pau Monn=C3=A9 Reviewed-by: Ross Lagerwall --- Makefile | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Makefile b/Makefile index f96b150539d2..2f74c3433336 100644 --- a/Makefile +++ b/Makefile @@ -11,6 +11,10 @@ LIBEXECDIR =3D $(DESTDIR)$(PREFIX)/libexec/livepatch-bui= ld-tools CFLAGS +=3D -Iinsn -Wall -g LDFLAGS =3D -lelf =20 +# Non GNU libc systems usually have argp as a standalone library. +LDFLAGS +=3D $(shell if test -z "`$(CC) -largp 2>&1 | grep '\-largp'`"; \ + then echo "-largp"; fi;) + TARGETS =3D create-diff-object prelink CREATE_DIFF_OBJECT_OBJS =3D create-diff-object.o lookup.o insn/insn.o insn= /inat.o common.o PRELINK_OBJS =3D prelink.o lookup.o insn/insn.o insn/inat.o common.o --=20 2.42.0 From nobody Tue May 21 10:06:22 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; 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Mon, 13 Nov 2023 08:10:12 -0800 (PST) From: Roger Pau Monne To: xen-devel@lists.xenproject.org Cc: Konrad Rzeszutek Wilk , Ross Lagerwall , Roger Pau Monne Subject: [PATCH 2/2] livepatch-tools: fix isnumber() function clash Date: Mon, 13 Nov 2023 17:09:40 +0100 Message-ID: <20231113160940.52430-3-roger.pau@citrix.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231113160940.52430-1-roger.pau@citrix.com> References: <20231113160940.52430-1-roger.pau@citrix.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @citrix.com) X-ZM-MESSAGEID: 1699891839500100001 isnumber() is already defined for some libcs [0] but the interface is not t= he same, the isnumber() helper just checks if a single character is a digit. Rename isnumber() to is_number() in order to avoid the clash. [0] https://man.freebsd.org/cgi/man.cgi?query=3Disnumber&sektion=3D3 Signed-off-by: Roger Pau Monn=C3=A9 Reviewed-by: Ross Lagerwall --- create-diff-object.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/create-diff-object.c b/create-diff-object.c index 67784642bcd7..d0e14e3a62bb 100644 --- a/create-diff-object.c +++ b/create-diff-object.c @@ -1352,7 +1352,7 @@ static void kpatch_process_special_sections(struct kp= atch_elf *kelf) } =20 /* Returns true if s is a string of only numbers with length > 0. */ -static bool isnumber(const char *s) +static bool is_number(const char *s) { do { if (!*s || !isdigit(*s)) @@ -1380,13 +1380,13 @@ static bool is_rodata_str_section(const char *name) =20 /* Check if name matches ".rodata.str1.[0-9]+" */ if (!strncmp(name, GCC_5_SECTION_NAME, strlen(GCC_5_SECTION_NAME))) - return isnumber(name + strlen(GCC_5_SECTION_NAME)); + return is_number(name + strlen(GCC_5_SECTION_NAME)); =20 /* Check if name matches ".rodata..str1.[0-9]+" */ s =3D strstr(name, GCC_6_SECTION_NAME); if (!s) return false; - return isnumber(s + strlen(GCC_6_SECTION_NAME)); + return is_number(s + strlen(GCC_6_SECTION_NAME)); #undef GCC_5_SECTION_NAME #undef GCC_6_SECTION_NAME } --=20 2.42.0