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build: Improve SECP_TRY_APPEND_DEFAULT_CFLAGS macro

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Co-authored-by: Tim Ruffing <crypto@timruffing.de>
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Hennadii Stepanov 2023-03-26 10:38:43 +01:00
parent 427bc3cdcf
commit 3addb4c1e8
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1 changed files with 7 additions and 4 deletions
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11
configure.ac
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@ -88,11 +88,14 @@ esac
AC_DEFUN([SECP_TRY_APPEND_DEFAULT_CFLAGS], [ AC_DEFUN([SECP_TRY_APPEND_DEFAULT_CFLAGS], [
# GCC and compatible (incl. clang) # GCC and compatible (incl. clang)
if test "x$GCC" = "xyes"; then if test "x$GCC" = "xyes"; then
# Try to append -Werror=unknown-warning-option to CFLAGS temporarily. Otherwise clang will # Try to append -Werror to CFLAGS temporarily. Otherwise checks for some unsupported
# not error out if it gets unknown warning flags and the checks here will always succeed # flags will succeed.
# no matter if clang knows the flag or not. # Note that failure to append -Werror does not necessarily mean that -Werror is not
# supported. The compiler may already be warning about something unrelated, for example
# about some path issue. If that is the case, -Werror cannot be used because all
# of those warnings would be turned into errors.
SECP_TRY_APPEND_DEFAULT_CFLAGS_saved_CFLAGS="$CFLAGS" SECP_TRY_APPEND_DEFAULT_CFLAGS_saved_CFLAGS="$CFLAGS"
SECP_TRY_APPEND_CFLAGS([-Werror=unknown-warning-option], CFLAGS) SECP_TRY_APPEND_CFLAGS([-Werror], CFLAGS)
SECP_TRY_APPEND_CFLAGS([-std=c89 -pedantic -Wno-long-long -Wnested-externs -Wshadow -Wstrict-prototypes -Wundef], $1) # GCC >= 3.0, -Wlong-long is implied by -pedantic. SECP_TRY_APPEND_CFLAGS([-std=c89 -pedantic -Wno-long-long -Wnested-externs -Wshadow -Wstrict-prototypes -Wundef], $1) # GCC >= 3.0, -Wlong-long is implied by -pedantic.
SECP_TRY_APPEND_CFLAGS([-Wno-overlength-strings], $1) # GCC >= 4.2, -Woverlength-strings is implied by -pedantic. SECP_TRY_APPEND_CFLAGS([-Wno-overlength-strings], $1) # GCC >= 4.2, -Woverlength-strings is implied by -pedantic.